In the Linux kernel, the following vulnerability has been resolved:
md/raid1: stop mdx_raid1 thread when raid1 array run failed
fail run raid1 array when we assemble array with the inactive disk only, but the mdx_raid1 thread were not stop, Even if the associated resources have been released. it will caused a NULL dereference when we do poweroff.
This causes the following Oops: [ 287.587787] BUG: kernel NULL pointer dereference, address: 0000000000000070 [ 287.594762] #PF: supervisor read access in kernel mode [ 287.599912] #PF: error_code(0x0000) - not-present page [ 287.605061] PGD 0 P4D 0 [ 287.607612] Oops: 0000 [#1] SMP NOPTI [ 287.611287] CPU: 3 PID: 5265 Comm: md0_raid1 Tainted: G U 5.10.146 #0 [ 287.619029] Hardware name: xxxxxxx/To be filled by O.E.M, BIOS 5.19 06/16/2022 [ 287.626775] RIP: 0010:md_check_recovery+0x57/0x500 [md_mod] [ 287.632357] Code: fe 01 00 00 48 83 bb 10 03 00 00 00 74 08 48 89 ...... [ 287.651118] RSP: 0018:ffffc90000433d78 EFLAGS: 00010202 [ 287.656347] RAX: 0000000000000000 RBX: ffff888105986800 RCX: 0000000000000000 [ 287.663491] RDX: ffffc90000433bb0 RSI: 00000000ffffefff RDI: ffff888105986800 [ 287.670634] RBP: ffffc90000433da0 R08: 0000000000000000 R09: c0000000ffffefff [ 287.677771] R10: 0000000000000001 R11: ffffc90000433ba8 R12: ffff888105986800 [ 287.684907] R13: 0000000000000000 R14: fffffffffffffe00 R15: ffff888100b6b500 [ 287.692052] FS: 0000000000000000(0000) GS:ffff888277f80000(0000) knlGS:0000000000000000 [ 287.700149] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 287.705897] CR2: 0000000000000070 CR3: 000000000320a000 CR4: 0000000000350ee0 [ 287.713033] Call Trace: [ 287.715498] raid1d+0x6c/0xbbb [raid1] [ 287.719256] ? __schedule+0x1ff/0x760 [ 287.722930] ? schedule+0x3b/0xb0 [ 287.726260] ? schedule_timeout+0x1ed/0x290 [ 287.730456] ? __switch_to+0x11f/0x400 [ 287.734219] md_thread+0xe9/0x140 [md_mod] [ 287.738328] ? md_thread+0xe9/0x140 [md_mod] [ 287.742601] ? wait_woken+0x80/0x80 [ 287.746097] ? md_register_thread+0xe0/0xe0 [md_mod] [ 287.751064] kthread+0x11a/0x140 [ 287.754300] ? kthread_park+0x90/0x90 [ 287.757974] ret_from_fork+0x1f/0x30
In fact, when raid1 array run fail, we need to do md_unregister_thread() before raid1_free().
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade kernel-livepatch-5.15.86-53.137Upgrade perfUpgrade kernel-livepatch-5.10.165-143.735Upgrade kernelUpgrade python-perf-debuginfoUpgrade python-perfUpgrade kernel-toolsUpgrade kernel-tools-develUpgrade bpftool-debuginfoUpgrade kernel-debuginfo-common-aarch64Upgrade bpftoolUpgrade kernel-headersUpgrade kernel-tools-debuginfoUpgrade kernel-develUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-livepatch-4.14.304-226.531Upgrade perf-debuginfoUpgrade kernel-debuginfo | May 20, 2026 | May 20, 2026 |
| Debian | — | Upgrade linux | Dec 29, 2025 | Dec 29, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade kernelUpgrade kernel-abi-stablelistsUpgrade python3-perfUpgrade bpftoolUpgrade kernel-tools-libsUpgrade kernel-tools | Mar 10, 2026 | Mar 10, 2026 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Dec 24, 2025 |
| Ubuntu | — | Upgrade linux-fipsUpgrade linux-oracle-5.4Upgrade linux-gcpUpgrade linux-awsUpgrade linux-bluefieldUpgrade linux-realtimeUpgrade linux-riscv-5.15Upgrade linux-lowlatency-hwe-5.15Upgrade linux-gcp-5.15Upgrade linux-intel-iotgUpgrade linux-azure-fdeUpgrade linux-azure-4.15Upgrade linux-azureUpgrade linux-raspi-5.4Upgrade linux-intel-iot-realtimeUpgrade linux-aws-5.15Upgrade linux-gcp-4.15Upgrade linux-kvmUpgrade linux-intel-iotg-5.15Upgrade linux-hwe-5.15Upgrade linux-nvidia-tegra-5.15Upgrade linux-raspiUpgrade linux-aws-5.4Upgrade linux-oracleUpgrade linux-aws-fipsUpgrade linux-iotUpgrade linux-azure-5.15Upgrade linux-gkeopUpgrade linux-azure-fipsUpgrade linux-hweUpgrade linux-azure-5.4Upgrade linux-hwe-5.4Upgrade linux-xilinx-zynqmpUpgrade linux-ibm-5.4Upgrade linux-nvidiaUpgrade linux-lowlatencyUpgrade linux-gcp-fipsUpgrade linux-oracle-5.15Upgrade linuxUpgrade linux-gcp-5.4Upgrade linux-ibmUpgrade linux-aws-hweUpgrade linux-gkeUpgrade linux-azure-fde-5.15 | Jan 6, 2026 | Dec 24, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | Dec 24, 2025 |
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