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NULL Pointer Dereference During KVM MMU Page Invalidation

Bug #2035166 reported by Chengen Du on 2023-09-12

This bug affects 1 person

Affects		Status	Importance	Assigned to	Milestone
	linux (Ubuntu)	In Progress	Undecided	Unassigned
	Jammy	Fix Released	High	Chengen Du

Bug Description

[Impact]
During VM live migration, there is a potential risk of dereferencing a NULL pointer,
which can lead to memory access issues and result in an unstable environment.

[Fix]
The call trace is as follows:

kernel: BUG: kernel NULL pointer dereference, address: 0000000000000008
kernel: #PF: supervisor write access in kernel mode
kernel: #PF: error_code(0x0002) - not-present page
kernel: PGD 0 P4D 0
kernel: Oops: 0002 [#1] SMP NOPTI
kernel: CPU: 29 PID: 4063601 Comm: CPU 0/KVM Tainted: G IOE 5.15.0-53-generic #59~20.04.1-Ubuntu
kernel: Hardware name: Dell Inc. PowerEdge R640/0H28RR, BIOS 2.12.2 07/09/2021
kernel: RIP: 0010:__handle_changed_spte+0x3a9/0x620 [kvm]
kernel: Code: 48 8b 58 28 44 0f b6 63 24 48 8b 43 28 41 83 e4 0f 48 89 45 a0 0f 1f 44 00 00 45 84 d2 0f 85 06 02 00 00 48 8b 43 08 48 8b 13 <48> 89 42 08 48 89 10 44 0f b6 6b 23 48 b8 00 01 00 00 00 00 ad de
kernel: RSP: 0018:ffffb580320278a8 EFLAGS: 00010246
kernel: RAX: 0000000000000000 RBX: ffffa0fe29e94c38 RCX: 0000000000000027
kernel: RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffb5801e24ba58
kernel: RBP: ffffb58032027930 R08: 0000000000000000 R09: 0000000000000004
kernel: R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000003
kernel: R13: 0000000000000004 R14: 0000000000000000 R15: ffffb5801e235000
kernel: FS: 00007f1553fff700(0000) GS:ffffa20eff780000(0000) knlGS:0000000000000000
kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
kernel: CR2: 0000000000000008 CR3: 000000e7f7544004 CR4: 00000000007726e0
kernel: PKRU: 55555554
kernel: Call Trace:
kernel: <TASK>
kernel: ? __switch_to_xtra+0x109/0x510
kernel: zap_gfn_range+0x218/0x360 [kvm]
kernel: ? __smp_call_single_queue+0x59/0x90
kernel: ? alloc_cpumask_var_node+0x1/0x30
kernel: ? kvm_make_vcpus_request_mask+0x150/0x1d0 [kvm]
kernel: kvm_tdp_mmu_zap_invalidated_roots+0x5b/0xb0 [kvm]
kernel: kvm_mmu_zap_all_fast+0x19a/0x1d0 [kvm]
--
kernel: RAX: ffffffffffffffda RBX: 000000004020ae46 RCX: 00007f15aa26e3ab
kernel: RDX: 00007f1553ffe050 RSI: 000000004020ae46 RDI: 000000000000002f
kernel: RBP: 00005602a885a410 R08: 00005602a82ad000 R09: 00007f154c087470
kernel: R10: 0000000000000000 R11: 0000000000000246 R12: 00007f1553ffe050
kernel: R13: 00007f1553ffe160 R14: 0000000000000000 R15: 0000000000800000
kernel: </TASK>

The error occurred randomly in different production environments of the customer, all with the same call trace.
Therefore, the likelihood of other processes contaminating memory is low.
After analyzing the call trace with the help of debug symbols, we can pinpoint the source of the error.

root@focal:~/ddeb# eu-addr2line -ifae ./usr/lib/debug/lib/modules/5.15.0-53-generic/kernel/arch/x86/kvm/kvm.ko __handle_changed_spte+0x3a9
0x0000000000068109
__list_del inlined at /build/linux-hwe-5.15-ZCQu4B/linux-hwe-5.15-5.15.0/include/linux/list.h:135:2 in __handle_changed_spte
/build/linux-hwe-5.15-ZCQu4B/linux-hwe-5.15-5.15.0/include/linux/list.h:112:13
__list_del_entry
/build/linux-hwe-5.15-ZCQu4B/linux-hwe-5.15-5.15.0/include/linux/list.h:135:2
list_del
/build/linux-hwe-5.15-ZCQu4B/linux-hwe-5.15-5.15.0/include/linux/list.h:146:2
tdp_mmu_unlink_page
/build/linux-hwe-5.15-ZCQu4B/linux-hwe-5.15-5.15.0/arch/x86/kvm/mmu/tdp_mmu.c:305:2
handle_removed_tdp_mmu_page
/build/linux-hwe-5.15-ZCQu4B/linux-hwe-5.15-5.15.0/arch/x86/kvm/mmu/tdp_mmu.c:340:2
__handle_changed_spte
/build/linux-hwe-5.15-ZCQu4B/linux-hwe-5.15-5.15.0/arch/x86/kvm/mmu/tdp_mmu.c:491:3

The error occurred when the kernel attempted to delete an entry from a list.
This issue may potentially be related to timing and has proven challenging to reproduce consistently, making it difficult for us to pinpoint the cause.
It's worth noting that the current kernel has replaced the list_head with atomic_t, as indicated by the following commit.

d25ceb926436 KVM: x86/mmu: Track the number of TDP MMU pages, but not the actual pages

While this patch doesn't modify the triggering logic, it replaces the problematic section with a more reliable approach while keeping the original logic unchanged.
If the issue persists, it should not result in any memory access problems.
We also requested the customer to set up a test environment and simulate a workload similar to the production environment.
The patch worked well and did not introduce any adverse effects.

[Test Plan]
Reproducing the issue has proven to be challenging.
Simulating heavy live migration activity in the customer's production environment is the appropriate approach to ensure that applying the patch will not result in any adverse effects.

[Where problems could occur]
The patch will impact the live migration workflow, but it only modifies the data structure in use, and no functionality will be altered.

Tags:

CVE References

Chengen Du (chengendu) on 2023-09-12

Changed in linux (Ubuntu Jammy):
assignee:	nobody → Chengen Du (chengendu)

Revision history for this message

Ubuntu Kernel Bot (ubuntu-kernel-bot) wrote on 2023-09-12: Missing required logs.

This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:

apport-collect 2035166

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

Changed in linux (Ubuntu):
status:	New → Incomplete
Changed in linux (Ubuntu Jammy):
status:	New → Incomplete

Chengen Du (chengendu) on 2023-09-12

Changed in linux (Ubuntu Jammy):
status:	Incomplete → In Progress
Changed in linux (Ubuntu):
status:	Incomplete → New

Ubuntu Kernel Bot (ubuntu-kernel-bot) on 2023-09-12

Changed in linux (Ubuntu):
status:	New → Incomplete

Stefan Bader (smb) on 2023-09-12

Changed in linux (Ubuntu):
status:	Incomplete → Invalid
Changed in linux (Ubuntu Jammy):
importance:	Undecided → Medium
importance:	Medium → High

Chengen Du (chengendu) on 2023-09-12

Changed in linux (Ubuntu):
status:	Invalid → In Progress

Roxana Nicolescu (roxanan) on 2023-09-20

Changed in linux (Ubuntu Jammy):
status:	In Progress → Fix Committed

Revision history for this message

Ubuntu Kernel Bot (ubuntu-kernel-bot) wrote on 2023-10-05:

This bug is awaiting verification that the linux/5.15.0-88.98 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-jammy-linux' to 'verification-done-jammy-linux'. If the problem still exists, change the tag 'verification-needed-jammy-linux' to 'verification-failed-jammy-linux'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

tags:

added: kernel-spammed-jammy-linux-v2 verification-needed-jammy-linux

Revision history for this message

Chengen Du (chengendu) wrote on 2023-10-06:

The kernels (5.15.0-88.98) have been tested without any issues.

tags:

added: verification-done-jammy-linux
removed: verification-needed-jammy-linux

Revision history for this message

Launchpad Janitor (janitor) wrote on 2023-10-30:

Download full text (22.7 KiB)

This bug was fixed in the package linux - 5.15.0-88.98

---------------
linux (5.15.0-88.98) jammy; urgency=medium

* jammy/linux: 5.15.0-88.98 -proposed tracker (LP: #2038055)

  * CVE-2023-4244
    - netfilter: nf_tables: don't skip expired elements during walk
    - netfilter: nf_tables: adapt set backend to use GC transaction API
    - netfilter: nft_set_hash: mark set element as dead when deleting from packet
      path
    - netfilter: nf_tables: GC transaction API to avoid race with control plane
    - netfilter: nf_tables: remove busy mark and gc batch API
    - netfilter: nf_tables: don't fail inserts if duplicate has expired
    - netfilter: nf_tables: fix kdoc warnings after gc rework
    - netfilter: nf_tables: fix GC transaction races with netns and netlink event
      exit path
    - netfilter: nf_tables: GC transaction race with netns dismantle
    - netfilter: nf_tables: GC transaction race with abort path
    - netfilter: nf_tables: use correct lock to protect gc_list
    - netfilter: nf_tables: defer gc run if previous batch is still pending
    - netfilter: nft_dynset: disallow object maps
    - netfilter: nft_set_rbtree: skip sync GC for new elements in this transaction

* CVE-2023-42756
- netfilter: ipset: Fix race between IPSET_CMD_CREATE and IPSET_CMD_SWAP

* CVE-2023-4623
- net/sched: sch_hfsc: Ensure inner classes have fsc curve

* PCI BARs larger than 128GB are disabled (LP: #2037403)
- PCI: Support BAR sizes up to 8TB

* Fix unstable audio at low levels on Thinkpad P1G4 (LP: #2037077)
- ALSA: hda/realtek - ALC287 I2S speaker platform support

* Check for changes relevant for security certifications (LP: #1945989)
- [Packaging] Add a new fips-checks script

This bug was fixed in the package linux - 5.15.0-88.98

---------------
linux (5.15.0-88.98) jammy; urgency=medium

* jammy/linux: 5.15.0-88.98 -proposed tracker (LP: #2038055)

* CVE-2023-42756
    - netfilter: ipset: Fix race between IPSET_CMD_CREATE and IPSET_CMD_SWAP

* CVE-2023-4623
    - net/sched: sch_hfsc: Ensure inner classes have fsc curve

* PCI BARs larger than 128GB are disabled (LP: #2037403)
    - PCI: Support BAR sizes up to 8TB

* Fix unstable audio at low levels on Thinkpad P1G4 (LP: #2037077)
    - ALSA: hda/realtek - ALC287 I2S speaker platform support

* Check for changes relevant for security certifications (LP: #1945989)
    - [Packaging] Add a new fips-checks script

* Jammy update: v5.15.126 upstream stable release (LP: #2037593)
    - io_uring: gate iowait schedule on having pending requests
    - perf: Fix function pointer case
    - net/mlx5: Free irqs only on shutdown callback
    - arm64: errata: Add workaround for TSB flush failures
    - arm64: errata: Add detection for TRBE write to out-of-range
    - [Config] updateconfigs for ARM64_ERRATUM_ and
      ARM64_WORKAROUND_TSB_FLUSH_FAILURE
    - iommu/arm-smmu-v3: Work around MMU-600 erratum 1076982
    - iommu/arm-smmu-v3: Document MMU-700 erratum 2812531
    - iommu/arm-smmu-v3: Add explicit feature for nesting
    - iommu/arm-smmu-v3: Document nesting-related errata
    - arm64: dts: imx8mn-var-som: add missing pull-up for onboard PHY reset pinmux
    - word-at-a-time: use the same return type for has_zero regardless of
      endianness
    - KVM: s390: fix sthyi error handling
    - wifi: cfg80211: Fix return value in scan logic
    - net/mlx5: DR, fix memory leak in mlx5dr_cmd_create_reformat_ctx
    - net/mlx5e: fix return value check in mlx5e_ipsec_remove_trailer()
    - bpf: Add length check for SK_DIAG_BPF_STORAGE_REQ_MAP_FD parsing
    - rtnetlink: let rtnl_bridge_setlink checks IFLA_BRIDGE_MODE length
    - net: dsa: fix value check in bcm_sf2_sw_probe()
    - perf test uprobe_from_different_cu: Skip if there is no gcc
    - net: sched: cls_u32: Fix match key mis-addressing
    - mISDN: hfcpci: Fix potential deadlock on &hc->lock
    - qed: Fix kernel-doc warnings
    - qed: Fix scheduling in a tasklet while getting stats
    - net: annotate data-races around sk->sk_max_pacing_rate
    - net: add missing READ_ONCE(sk->sk_rcvlowat) annotation
    - net: add missing READ_ONCE(sk->sk_sndbuf) annotation
    - net: add missing READ_ONCE(sk->sk_rcvbuf) annotation
    - net: add missing data-race annotations around sk->sk_peek_off
    - net: add missing data-race annotation for sk_ll_usec
    - net/sched: taprio: Limit TCA_TAPRIO_ATTR_SCHED_CYCLE_TIME to INT_MAX.
    - bpf, cpumap: Handle skb as well when clean up ptr_ring
    - bpf: sockmap: Remove preempt_disable in sock_map_sk_acquire
    - net: ll_temac: Switch to use dev_err_probe() helper
    - net: ll_temac: fix error checking of irq_of_parse_and_map()
    - net: korina: handle clk prepare error in korina_probe()
    - net: netsec: Ignore 'phy-mode' on SynQuacer in DT mode
    - net: dcb: choose correct policy to parse DCB_ATTR_BCN
    - s390/qeth: Don't call dev_close/dev_open (DOWN/UP)
    - ip6mr: Fix skb_under_panic in ip6mr_cache_report()
    - vxlan: Fix nexthop hash size
    - net/mlx5: fs_core: Make find_closest_ft more generic
    - net/mlx5: fs_core: Skip the FTs in the same FS_TYPE_PRIO_CHAINS fs_prio
    - prestera: fix fallback to previous version on same major version
    - tcp_metrics: fix addr_same() helper
    - tcp_metrics: annotate data-races around tm->tcpm_stamp
    - tcp_metrics: annotate data-races around tm->tcpm_lock
    - tcp_metrics: annotate data-races around tm->tcpm_vals[]
    - tcp_metrics: annotate data-races around tm->tcpm_net
    - tcp_metrics: fix data-race in tcpm_suck_dst() vs fastopen
    - scsi: zfcp: Defer fc_rport blocking until after ADISC response
    - scsi: storvsc: Limit max_sectors for virtual Fibre Channel devices
    - libceph: fix potential hang in ceph_osdc_notify()
    - USB: zaurus: Add ID for A-300/B-500/C-700
    - ceph: defer stopping mdsc delayed_work
    - firmware: arm_scmi: Drop OF node reference in the transport channel setup
    - exfat: use kvmalloc_array/kvfree instead of kmalloc_array/kfree
    - exfat: release s_lock before calling dir_emit()
    - mtd: spinand: toshiba: Fix ecc_get_status
    - mtd: rawnand: meson: fix OOB available bytes for ECC
    - arm64: dts: stratix10: fix incorrect I2C property for SCL signal
    - wifi: mt76: mt7615: do not advertise 5 GHz on first phy of MT7615D (DBDC)
    - rbd: prevent busy loop when requesting exclusive lock
    - bpf: Disable preemption in bpf_event_output
    - open: make RESOLVE_CACHED correctly test for O_TMPFILE
    - drm/ttm: check null pointer before accessing when swapping
    - bpf, cpumap: Make sure kthread is running before map update returns
    - file: reinstate f_pos locking optimization for regular files
    - fs/ntfs3: Use __GFP_NOWARN allocation at ntfs_load_attr_list()
    - fs/sysv: Null check to prevent null-ptr-deref bug
    - net: usbnet: Fix WARNING in usbnet_start_xmit/usb_submit_urb
    - fs: Protect reconfiguration of sb read-write from racing writes
    - ext2: Drop fragment support
    - mtd: rawnand: omap_elm: Fix incorrect type in assignment
    - mtd: rawnand: rockchip: fix oobfree offset and description
    - mtd: rawnand: rockchip: Align hwecc vs. raw page helper layouts
    - mtd: rawnand: fsl_upm: Fix an off-by one test in fun_exec_op()
    - powerpc/mm/altmap: Fix altmap boundary check
    - drm/imx/ipuv3: Fix front porch adjustment upon hactive aligning
    - selftests/rseq: check if libc rseq support is registered
    - selftests/rseq: Play nice with binaries statically linked against glibc
      2.35+
    - soundwire: bus: pm_runtime_request_resume on peripheral attachment
    - soundwire: fix enumeration completion
    - PM / wakeirq: support enabling wake-up irq after runtime_suspend called
    - PM: sleep: wakeirq: fix wake irq arming
    - Linux 5.15.126

* Jammy update: v5.15.125 upstream stable release (LP: #2036843)
    - ia64/cpu: Switch to arch_cpu_finalize_init()
    - m68k/cpu: Switch to arch_cpu_finalize_init()
    - mips/cpu: Switch to arch_cpu_finalize_init()
    - sh/cpu: Switch to arch_cpu_finalize_init()
    - Linux 5.15.125
    - Upstream stable to v5.15.125

* CVE-2023-42755
    - net/sched: Retire rsvp classifier
    - [Config] remove NET_CLS_RSVP and NET_CLS_RSVP6

* CVE-2023-42753
    - netfilter: ipset: add the missing IP_SET_HASH_WITH_NET0 macro for
      ip_set_hash_netportnet.c

* CVE-2023-34319
    - xen/netback: Fix buffer overrun triggered by unusual packet

* CVE-2023-5197
    - netfilter: nf_tables: disallow rule removal from chain binding

* CVE-2023-4921
    - net: sched: sch_qfq: Fix UAF in qfq_dequeue()

* CVE-2023-42752
    - igmp: limit igmpv3_newpack() packet size to IP_MAX_MTU

* Avoid address overwrite in kernel_connect (LP: #2035163)
    - net: Avoid address overwrite in kernel_connect

* NULL Pointer Dereference During KVM MMU Page Invalidation (LP: #2035166)
    - KVM: x86/mmu: Track the number of TDP MMU pages, but not the actual pages

* Fix suspend hang on Lenovo workstation (LP: #2034479)
    - igb: Fix igb_down hung on surprise removal

* [regression] Unable to initialize SGX enclaves with XFRM other than 3
    (LP: #2034745)
    - x86/fpu: Set X86_FEATURE_OSXSAVE feature after enabling OSXSAVE in CR4

* CVE-2023-4881
    - netfilter: nftables: exthdr: fix 4-byte stack OOB write

* CVE-2023-4622
    - af_unix: Fix null-ptr-deref in unix_stream_sendpage().

* Jammy update: v5.15.124 upstream stable release (LP: #2035400)
    - jbd2: Fix wrongly judgement for buffer head removing while doing checkpoint
    - KVM: s390: pv: fix index value of replaced ASCE
    - io_uring: don't audit the capability check in io_uring_create()
    - gpio: tps68470: Make tps68470_gpio_output() always set the initial value
    - pwm: Add a stub for devm_pwmchip_add()
    - gpio: mvebu: Make use of devm_pwmchip_add
    - gpio: mvebu: fix irq domain leak
    - btrfs: fix race between quota disable and relocation
    - i2c: Delete error messages for failed memory allocations
    - i2c: Improve size determinations
    - i2c: nomadik: Remove unnecessary goto label
    - i2c: nomadik: Use devm_clk_get_enabled()
    - i2c: nomadik: Remove a useless call in the remove function
    - PCI/ASPM: Return 0 or -ETIMEDOUT from pcie_retrain_link()
    - PCI/ASPM: Factor out pcie_wait_for_retrain()
    - PCI/ASPM: Avoid link retraining race
    - PCI: rockchip: Remove writes to unused registers
    - PCI: rockchip: Fix window mapping and address translation for endpoint
    - PCI: rockchip: Don't advertise MSI-X in PCIe capabilities
    - dlm: cleanup plock_op vs plock_xop
    - dlm: rearrange async condition return
    - fs: dlm: interrupt posix locks only when process is killed
    - drm/ttm: Don't print error message if eviction was interrupted
    - drm/ttm: Don't leak a resource on eviction error
    - n_tty: Rename tail to old_tail in n_tty_read()
    - tty: fix hang on tty device with no_room set
    - drm/ttm: never consider pinned BOs for eviction&swap
    - cifs: missing directory in MAINTAINERS file
    - cifs: use fs_context for automounts
    - ksmbd: remove internal.h include
    - cifs: if deferred close is disabled then close files immediately
    - pwm: meson: Simplify duplicated per-channel tracking
    - pwm: meson: fix handling of period/duty if greater than UINT_MAX
    - tracing/probes: Add symstr type for dynamic events
    - tracing/probes: Fix to avoid double count of the string length on the array
    - tracing: Allow synthetic events to pass around stacktraces
    - Revert "tracing: Add "(fault)" name injection to kernel probes"
    - tracing/probes: Fix to record 0-length data_loc in fetch_store_string*() if
      fails
    - scsi: qla2xxx: Remove unused declarations for qla2xxx
    - scsi: qla2xxx: Multi-que support for TMF
    - scsi: qla2xxx: Fix task management cmd failure
    - scsi: qla2xxx: Fix task management cmd fail due to unavailable resource
    - scsi: qla2xxx: Add debug prints in the device remove path
    - scsi: qla2xxx: Fix hang in task management
    - drm/amdgpu: fix vkms crtc settings
    - drm/amdgpu/vkms: relax timer deactivation by hrtimer_try_to_cancel
    - phy: qcom-snps: Use dev_err_probe() to simplify code
    - phy: qcom-snps: correct struct qcom_snps_hsphy kerneldoc
    - phy: qcom-snps-femto-v2: keep cfg_ahb_clk enabled during runtime suspend
    - phy: qcom-snps-femto-v2: properly enable ref clock
    - soundwire: qcom: update status correctly with mask
    - media: staging: atomisp: select V4L2_FWNODE
    - i40e: Fix an NULL vs IS_ERR() bug for debugfs_create_dir()
    - iavf: fix potential deadlock on allocation failure
    - iavf: check for removal state before IAVF_FLAG_PF_COMMS_FAILED
    - net: phy: marvell10g: fix 88x3310 power up
    - net: hns3: fix wrong tc bandwidth weight data issue
    - net: hns3: fix wrong bw weight of disabled tc issue
    - vxlan: move to its own directory
    - vxlan: calculate correct header length for GPE
    - phy: hisilicon: Fix an out of bounds check in hisi_inno_phy_probe()
    - ethernet: atheros: fix return value check in atl1e_tso_csum()
    - ipv6 addrconf: fix bug where deleting a mngtmpaddr can create a new
      temporary address
    - ice: Fix memory management in ice_ethtool_fdir.c
    - bonding: reset bond's flags when down link is P2P device
    - team: reset team's flags when down link is P2P device
    - net: stmmac: Apply redundant write work around on 4.xx too
    - platform/x86: msi-laptop: Fix rfkill out-of-sync on MSI Wind U100
    - igc: Fix Kernel Panic during ndo_tx_timeout callback
    - netfilter: nft_set_rbtree: fix overlap expiration walk
    - net/sched: mqprio: refactor nlattr parsing to a separate function
    - net/sched: mqprio: add extack to mqprio_parse_nlattr()
    - net/sched: mqprio: Add length check for TCA_MQPRIO_{MAX/MIN}_RATE64
    - benet: fix return value check in be_lancer_xmit_workarounds()
    - tipc: check return value of pskb_trim()
    - tipc: stop tipc crypto on failure in tipc_node_create
    - RDMA/mlx4: Make check for invalid flags stricter
    - drm/msm/dpu: drop enum dpu_core_perf_data_bus_id
    - drm/msm/adreno: Fix snapshot BINDLESS_DATA size
    - RDMA/irdma: Add missing read barriers
    - RDMA/irdma: Fix data race on CQP completion stats
    - RDMA/irdma: Fix data race on CQP request done
    - RDMA/mthca: Fix crash when polling CQ for shared QPs
    - RDMA/bnxt_re: Prevent handling any completions after qp destroy
    - drm/msm: Fix IS_ERR_OR_NULL() vs NULL check in a5xx_submit_in_rb()
    - ASoC: fsl_spdif: Silence output on stop
    - block: Fix a source code comment in include/uapi/linux/blkzoned.h
    - dm raid: fix missing reconfig_mutex unlock in raid_ctr() error paths
    - dm raid: clean up four equivalent goto tags in raid_ctr()
    - dm raid: protect md_stop() with 'reconfig_mutex'
    - drm/amd: Fix an error handling mistake in psp_sw_init()
    - RDMA/irdma: Report correct WC error
    - ata: pata_ns87415: mark ns87560_tf_read static
    - ring-buffer: Fix wrong stat of cpu_buffer->read
    - tracing: Fix warning in trace_buffered_event_disable()
    - Revert "usb: gadget: tegra-xudc: Fix error check in
      tegra_xudc_powerdomain_init()"
    - usb: gadget: call usb_gadget_check_config() to verify UDC capability
    - USB: gadget: Fix the memory leak in raw_gadget driver
    - KVM: Grab a reference to KVM for VM and vCPU stats file descriptors
    - KVM: VMX: Don't fudge CR0 and CR4 for restricted L2 guest
    - serial: qcom-geni: drop bogus runtime pm state update
    - serial: 8250_dw: Preserve original value of DLF register
    - serial: sifive: Fix sifive_serial_console_setup() section
    - USB: serial: option: support Quectel EM060K_128
    - USB: serial: option: add Quectel EC200A module support
    - USB: serial: simple: add Kaufmann RKS+CAN VCP
    - USB: serial: simple: sort driver entries
    - can: gs_usb: gs_can_close(): add missing set of CAN state to
      CAN_STATE_STOPPED
    - Revert "usb: dwc3: core: Enable AutoRetry feature in the controller"
    - usb: dwc3: pci: skip BYT GPIO lookup table for hardwired phy
    - usb: dwc3: don't reset device side if dwc3 was configured as host-only
    - usb: ohci-at91: Fix the unhandle interrupt when resume
    - USB: quirks: add quirk for Focusrite Scarlett
    - usb: cdns3: fix incorrect calculation of ep_buf_size when more than one
      config
    - usb: xhci-mtk: set the dma max_seg_size
    - Revert "usb: xhci: tegra: Fix error check"
    - Documentation: security-bugs.rst: update preferences when dealing with the
      linux-distros group
    - Documentation: security-bugs.rst: clarify CVE handling
    - staging: r8712: Fix memory leak in _r8712_init_xmit_priv()
    - staging: ks7010: potential buffer overflow in ks_wlan_set_encode_ext()
    - tty: n_gsm: fix UAF in gsm_cleanup_mux
    - Revert "xhci: add quirk for host controllers that don't update endpoint DCS"
    - ALSA: hda/relatek: Enable Mute LED on HP 250 G8
    - hwmon: (k10temp) Enable AMD3255 Proc to show negative temperature
    - hwmon: (nct7802) Fix for temp6 (PECI1) processed even if PECI1 disabled
    - btrfs: check if the transaction was aborted at btrfs_wait_for_commit()
    - btrfs: check for commit error at btrfs_attach_transaction_barrier()
    - file: always lock position for FMODE_ATOMIC_POS
    - nfsd: Remove incorrect check in nfsd4_validate_stateid
    - tpm_tis: Explicitly check for error code
    - irq-bcm6345-l1: Do not assume a fixed block to cpu mapping
    - irqchip/gic-v4.1: Properly lock VPEs when doing a directLPI invalidation
    - locking/rtmutex: Fix task->pi_waiters integrity
    - KVM: x86: Disallow KVM_SET_SREGS{2} if incoming CR0 is invalid
    - virtio-net: fix race between set queues and probe
    - s390/dasd: fix hanging device after quiesce/resume
    - ASoC: wm8904: Fill the cache for WM8904_ADC_TEST_0 register
    - ceph: never send metrics if disable_send_metrics is set
    - dm cache policy smq: ensure IO doesn't prevent cleaner policy progress
    - rbd: make get_lock_owner_info() return a single locker or NULL
    - rbd: harden get_lock_owner_info() a bit
    - rbd: retrieve and check lock owner twice before blocklisting
    - tracing: Fix trace_event_raw_event_synth() if else statement
    - ACPI: processor: perflib: Use the "no limit" frequency QoS
    - ACPI: processor: perflib: Avoid updating frequency QoS unnecessarily
    - cpufreq: intel_pstate: Drop ACPI _PSS states table patching
    - selftests: mptcp: sockopt: use 'iptables-legacy' if available
    - io_uring: treat -EAGAIN for REQ_F_NOWAIT as final for io-wq
    - ASoC: cs42l51: fix driver to properly autoload with automatic module loading
    - selftests: mptcp: join: only check for ip6tables if needed
    - Linux 5.15.124

* Jammy update: v5.15.123 upstream stable release (LP: #2034612)
    - ALSA: hda/realtek - remove 3k pull low procedure
    - ALSA: hda/realtek: Add quirk for Clevo NS70AU
    - ALSA: hda/realtek: Enable Mute LED on HP Laptop 15s-eq2xxx
    - keys: Fix linking a duplicate key to a keyring's assoc_array
    - perf probe: Add test for regression introduced by switch to
      die_get_decl_file()
    - btrfs: fix warning when putting transaction with qgroups enabled after abort
    - fuse: revalidate: don't invalidate if interrupted
    - btrfs: zoned: fix memory leak after finding block group with super blocks
    - fuse: ioctl: translate ENOSYS in outarg
    - selftests: tc: set timeout to 15 minutes
    - selftests: tc: add 'ct' action kconfig dep
    - regmap: Drop initial version of maximum transfer length fixes
    - regmap: Account for register length in SMBus I/O limits
    - can: bcm: Fix UAF in bcm_proc_show()
    - selftests: tc: add ConnTrack procfs kconfig
    - drm/client: Fix memory leak in drm_client_target_cloned
    - drm/client: Fix memory leak in drm_client_modeset_probe
    - drm/amd/display: Disable MPC split by default on special asic
    - drm/amd/display: Keep PHY active for DP displays on DCN31
    - ASoC: fsl_sai: Disable bit clock with transmitter
    - ASoC: codecs: wcd938x: fix missing clsh ctrl error handling
    - ASoC: codecs: wcd-mbhc-v2: fix resource leaks on component remove
    - ASoC: codecs: wcd938x: fix resource leaks on component remove
    - ASoC: codecs: wcd938x: fix missing mbhc init error handling
    - ASoC: codecs: wcd934x: fix resource leaks on component remove
    - ASoC: codecs: wcd938x: fix codec initialisation race
    - ASoC: codecs: wcd938x: fix soundwire initialisation race
    - ext4: correct inline offset when handling xattrs in inode body
    - drm/radeon: Fix integer overflow in radeon_cs_parser_init
    - ALSA: emu10k1: roll up loops in DSP setup code for Audigy
    - quota: Properly disable quotas when add_dquot_ref() fails
    - quota: fix warning in dqgrab()
    - udf: Fix uninitialized array access for some pathnames
    - fs: jfs: Fix UBSAN: array-index-out-of-bounds in dbAllocDmapLev
    - MIPS: dec: prom: Address -Warray-bounds warning
    - FS: JFS: Fix null-ptr-deref Read in txBegin
    - FS: JFS: Check for read-only mounted filesystem in txBegin
    - spi: bcm63xx: fix max prepend length
    - fbdev: imxfb: warn about invalid left/right margin
    - perf build: Fix library not found error when using CSLIBS
    - pinctrl: amd: Use amd_pinconf_set() for all config options
    - net: ethernet: ti: cpsw_ale: Fix cpsw_ale_get_field()/cpsw_ale_set_field()
    - bridge: Add extack warning when enabling STP in netns.
    - ethernet: use eth_hw_addr_set() instead of ether_addr_copy()
    - of: net: add a helper for loading netdev->dev_addr
    - ethernet: use of_get_ethdev_address()
    - net: ethernet: mtk_eth_soc: handle probe deferral
    - net: sched: cls_bpf: Undo tcf_bind_filter in case of an error
    - iavf: Fix use-after-free in free_netdev
    - iavf: Fix out-of-bounds when setting channels on remove
    - security: keys: Modify mismatched function name
    - octeontx2-pf: Dont allocate BPIDs for LBK interfaces
    - bpf: Fix subprog idx logic in check_max_stack_depth
    - igc: Prevent garbled TX queue with XDP ZEROCOPY
    - tcp: annotate data-races around tcp_rsk(req)->ts_recent
    - net: ipv4: Use kfree_sensitive instead of kfree
    - net:ipv6: check return value of pskb_trim()
    - Revert "tcp: avoid the lookup process failing to get sk in ehash table"
    - fbdev: au1200fb: Fix missing IRQ check in au1200fb_drv_probe
    - llc: Don't drop packet from non-root netns.
    - netfilter: nf_tables: fix spurious set element insertion failure
    - netfilter: nf_tables: skip bound chain in netns release path
    - tcp: annotate data-races around tp->tcp_tx_delay
    - tcp: annotate data-races around tp->keepalive_time
    - tcp: annotate data-races around tp->keepalive_intvl
    - tcp: annotate data-races around tp->keepalive_probes
    - tcp: annotate data-races around icsk->icsk_syn_retries
    - tcp: annotate data-races around tp->linger2
    - tcp: annotate data-races around rskq_defer_accept
    - tcp: annotate data-races around tp->notsent_lowat
    - tcp: annotate data-races around icsk->icsk_user_timeout
    - tcp: annotate data-races around fastopenq.max_qlen
    - net: phy: prevent stale pointer dereference in phy_init()
    - jbd2: recheck chechpointing non-dirty buffer
    - tracing/histograms: Return an error if we fail to add histogram to hist_vars
      list
    - nixge: fix mac address error handling again
    - Linux 5.15.123

* allow io_uring to be disabled in runtime (LP: #2035116)
    - io_uring: add a sysctl to disable io_uring system-wide

* CVE-2023-31083
    - Bluetooth: hci_ldisc: check HCI_UART_PROTO_READY flag in HCIUARTGETPROTO

* CVE-2023-3772
    - xfrm: add NULL check in xfrm_update_ae_params

* Packaging resync (LP: #1786013)
    - [Packaging] update helper scripts

-- Roxana Nicolescu <roxana.nicolescu@canonical.com>  Mon, 02 Oct 2023 15:40:31 +0200

Changed in linux (Ubuntu Jammy):
status:	Fix Committed → Fix Released

Revision history for this message

Ubuntu Kernel Bot (ubuntu-kernel-bot) wrote on 2023-10-30:

This bug is awaiting verification that the linux-gkeop/5.15.0-1032.38 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-jammy-linux-gkeop' to 'verification-done-jammy-linux-gkeop'. If the problem still exists, change the tag 'verification-needed-jammy-linux-gkeop' to 'verification-failed-jammy-linux-gkeop'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

tags:

added: kernel-spammed-jammy-linux-gkeop-v2 verification-needed-jammy-linux-gkeop

Revision history for this message

Ubuntu Kernel Bot (ubuntu-kernel-bot) wrote on 2023-10-30:

This bug is awaiting verification that the linux-bluefield/5.15.0-1029.31 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-jammy-linux-bluefield' to 'verification-done-jammy-linux-bluefield'. If the problem still exists, change the tag 'verification-needed-jammy-linux-bluefield' to 'verification-failed-jammy-linux-bluefield'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

tags:

added: kernel-spammed-jammy-linux-bluefield-v2 verification-needed-jammy-linux-bluefield

Revision history for this message

Ubuntu Kernel Bot (ubuntu-kernel-bot) wrote on 2023-10-30:

This bug is awaiting verification that the linux-intel-iotg/5.15.0-1044.50 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-jammy-linux-intel-iotg' to 'verification-done-jammy-linux-intel-iotg'. If the problem still exists, change the tag 'verification-needed-jammy-linux-intel-iotg' to 'verification-failed-jammy-linux-intel-iotg'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

Revision history for this message

Ubuntu Kernel Bot (ubuntu-kernel-bot) wrote on 2023-10-30:

This bug is awaiting verification that the linux-raspi/5.15.0-1042.45 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-jammy-linux-raspi' to 'verification-done-jammy-linux-raspi'. If the problem still exists, change the tag 'verification-needed-jammy-linux-raspi' to 'verification-failed-jammy-linux-raspi'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

tags:	added: kernel-spammed-jammy-linux-intel-iotg-v2 verification-needed-jammy-linux-intel-iotg
tags:	added: kernel-spammed-jammy-linux-raspi-v2 verification-needed-jammy-linux-raspi

Revision history for this message

Ubuntu Kernel Bot (ubuntu-kernel-bot) wrote on 2023-10-30:

#11

This bug is awaiting verification that the linux-intel-iot-realtime/5.15.0-1042.44 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-jammy-linux-intel-iot-realtime' to 'verification-done-jammy-linux-intel-iot-realtime'. If the problem still exists, change the tag 'verification-needed-jammy-linux-intel-iot-realtime' to 'verification-failed-jammy-linux-intel-iot-realtime'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

tags:

added: kernel-spammed-jammy-linux-intel-iot-realtime-v2 verification-needed-jammy-linux-intel-iot-realtime

Revision history for this message

Ubuntu Kernel Bot (ubuntu-kernel-bot) wrote on 2023-11-01:

#12

This bug is awaiting verification that the linux-nvidia-tegra/5.15.0-1019.19 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-jammy-linux-nvidia-tegra' to 'verification-done-jammy-linux-nvidia-tegra'. If the problem still exists, change the tag 'verification-needed-jammy-linux-nvidia-tegra' to 'verification-failed-jammy-linux-nvidia-tegra'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

tags:

added: kernel-spammed-jammy-linux-nvidia-tegra-v2 verification-needed-jammy-linux-nvidia-tegra

Revision history for this message

Ubuntu Kernel Bot (ubuntu-kernel-bot) wrote on 2023-11-09:

#13

This bug is awaiting verification that the linux-gcp-tcpx/5.15.0-1002.2 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-focal-linux-gcp-tcpx' to 'verification-done-focal-linux-gcp-tcpx'. If the problem still exists, change the tag 'verification-needed-focal-linux-gcp-tcpx' to 'verification-failed-focal-linux-gcp-tcpx'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

tags:

added: kernel-spammed-focal-linux-gcp-tcpx-v2 verification-needed-focal-linux-gcp-tcpx

Revision history for this message

Ubuntu Kernel Bot (ubuntu-kernel-bot) wrote on 2023-11-09:

#14

This bug is awaiting verification that the linux-xilinx-zynqmp/5.15.0-1025.29 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-jammy-linux-xilinx-zynqmp' to 'verification-done-jammy-linux-xilinx-zynqmp'. If the problem still exists, change the tag 'verification-needed-jammy-linux-xilinx-zynqmp' to 'verification-failed-jammy-linux-xilinx-zynqmp'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

tags:

added: kernel-spammed-jammy-linux-xilinx-zynqmp-v2 verification-needed-jammy-linux-xilinx-zynqmp

Revision history for this message

Ubuntu Kernel Bot (ubuntu-kernel-bot) wrote on 2023-11-10:

#15

This bug is awaiting verification that the linux-nvidia-tegra-igx/5.15.0-1006.6 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-jammy-linux-nvidia-tegra-igx' to 'verification-done-jammy-linux-nvidia-tegra-igx'. If the problem still exists, change the tag 'verification-needed-jammy-linux-nvidia-tegra-igx' to 'verification-failed-jammy-linux-nvidia-tegra-igx'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

tags:

added: kernel-spammed-jammy-linux-nvidia-tegra-igx-v2 verification-needed-jammy-linux-nvidia-tegra-igx

Revision history for this message

Ubuntu Kernel Bot (ubuntu-kernel-bot) wrote on 2023-11-15:

#16

This bug is awaiting verification that the linux-nvidia-tegra-5.15/5.15.0-1019.19~20.04.1 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-focal-linux-nvidia-tegra-5.15' to 'verification-done-focal-linux-nvidia-tegra-5.15'. If the problem still exists, change the tag 'verification-needed-focal-linux-nvidia-tegra-5.15' to 'verification-failed-focal-linux-nvidia-tegra-5.15'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

tags:

added: kernel-spammed-focal-linux-nvidia-tegra-5.15-v2 verification-needed-focal-linux-nvidia-tegra-5.15

Revision history for this message

Ubuntu Kernel Bot (ubuntu-kernel-bot) wrote on 2023-12-04:

#17

This bug is awaiting verification that the linux-azure-fips/5.15.0-1053.61+fips1 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-jammy-linux-azure-fips' to 'verification-done-jammy-linux-azure-fips'. If the problem still exists, change the tag 'verification-needed-jammy-linux-azure-fips' to 'verification-failed-jammy-linux-azure-fips'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

tags:

added: kernel-spammed-jammy-linux-azure-fips-v2 verification-needed-jammy-linux-azure-fips

Revision history for this message

Ubuntu Kernel Bot (ubuntu-kernel-bot) wrote on 2024-03-01:

#18

This bug is awaiting verification that the linux-mtk/5.15.0-1030.34 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-jammy-linux-mtk' to 'verification-done-jammy-linux-mtk'. If the problem still exists, change the tag 'verification-needed-jammy-linux-mtk' to 'verification-failed-jammy-linux-mtk'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

tags:

added: kernel-spammed-jammy-linux-mtk-v2 verification-needed-jammy-linux-mtk

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NULL Pointer Dereference During KVM MMU Page Invalidation

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