In the Linux kernel, the following vulnerability has been resolved:
net/smc: protect link down work from execute after lgr freed
link down work may be scheduled before lgr freed but execute after lgr freed, which may result in crash. So it is need to hold a reference before shedule link down work, and put the reference after work executed or canceled.
The relevant crash call stack as follows: list_del corruption. prev->next should be ffffb638c9c0fe20, but was 0000000000000000 ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:51! invalid opcode: 0000 [#1] SMP NOPTI CPU: 6 PID: 978112 Comm: kworker/6:119 Kdump: loaded Tainted: G #1 Hardware name: Alibaba Cloud Alibaba Cloud ECS, BIOS 2221b89 04/01/2014 Workqueue: events smc_link_down_work [smc] RIP: 0010:__list_del_entry_valid.cold+0x31/0x47 RSP: 0018:ffffb638c9c0fdd8 EFLAGS: 00010086 RAX: 0000000000000054 RBX: ffff942fb75e5128 RCX: 0000000000000000 RDX: ffff943520930aa0 RSI: ffff94352091fc80 RDI: ffff94352091fc80 RBP: 0000000000000000 R08: 0000000000000000 R09: ffffb638c9c0fc38 R10: ffffb638c9c0fc30 R11: ffffffffa015eb28 R12: 0000000000000002 R13: ffffb638c9c0fe20 R14: 0000000000000001 R15: ffff942f9cd051c0 FS: 0000000000000000(0000) GS:ffff943520900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4f25214000 CR3: 000000025fbae004 CR4: 00000000007706e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 PKRU: 55555554 Call Trace: rwsem_down_write_slowpath+0x17e/0x470 smc_link_down_work+0x3c/0x60 [smc] process_one_work+0x1ac/0x350 worker_thread+0x49/0x2f0 ? rescuer_thread+0x360/0x360 kthread+0x118/0x140 ? __kthread_bind_mask+0x60/0x60 ret_from_fork+0x1f/0x30
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux-6.1Upgrade linux | Jan 13, 2025 | Dec 29, 2024 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Dec 29, 2024 |
| Ubuntu | — | Upgrade linux-image-6.11.0-1011-gcp-64kUpgrade linux-image-azureUpgrade linux-image-gkeUpgrade linux-image-nvidia-6.8Upgrade linux-image-oem-22.04bUpgrade linux-image-6.8.0-60-lowlatencyUpgrade linux-image-kvmUpgrade linux-image-6.8.1-1022-realtimeUpgrade linux-image-6.8.0-1028-nvidia-lowlatency-64kUpgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-awsUpgrade linux-image-6.11.0-21-generic-64kUpgrade linux-image-oem-24.04aUpgrade linux-image-realtimeUpgrade linux-image-oracle-64kUpgrade linux-image-6.8.0-60-generic-64kUpgrade linux-image-aws-lts-24.04Upgrade linux-image-raspi-realtimeUpgrade linux-image-nvidia-64kUpgrade linux-image-generic-hwe-22.04Upgrade linux-image-6.11.0-1012-azure-fdeUpgrade linux-image-6.8.0-1029-azure-fdeUpgrade linux-image-6.11.0-1011-lowlatencyUpgrade linux-image-6.11.0-1011-gcpUpgrade linux-image-6.8.0-1030-gcp-64kUpgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-realtime-hwe-24.04Upgrade linux-image-gcpUpgrade linux-image-6.8.0-60-lowlatency-64kUpgrade linux-image-6.8.0-1028-nvidia-lowlatencyUpgrade linux-image-6.8.0-1012-gkeopUpgrade linux-image-gcp-lts-24.04Upgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-ibm-lts-24.04Upgrade linux-image-6.8.0-1026-oracle-64kUpgrade linux-image-6.11.0-1010-raspiUpgrade linux-image-6.8.0-1030-gcpUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-virtual-hwe-22.04Upgrade linux-image-oracleUpgrade linux-image-6.11.0-1013-oracle-64kUpgrade linux-image-oem-22.04dUpgrade linux-image-raspiUpgrade linux-image-azure-fde-lts-24.04Upgrade linux-image-gcp-64kUpgrade linux-image-6.8.0-2023-raspi-realtimeUpgrade linux-image-lowlatency-64kUpgrade linux-image-nvidia-lowlatencyUpgrade linux-image-6.8.0-1028-oemUpgrade linux-image-azure-nvidiaUpgrade linux-image-ibm-classicUpgrade linux-image-ibmUpgrade linux-image-6.11.0-21-genericUpgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-gkeopUpgrade linux-image-oracle-lts-24.04Upgrade linux-image-6.11.0-1013-oracleUpgrade linux-image-oem-22.04aUpgrade linux-image-6.8.0-1028-nvidia-64kUpgrade linux-image-6.8.0-1028-raspiUpgrade linux-image-oem-24.04bUpgrade linux-image-6.8.0-1016-azure-nvidiaUpgrade linux-image-oem-22.04Upgrade linux-image-6.8.0-60-genericUpgrade linux-image-6.8.0-1028-nvidiaUpgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-oem-24.04Upgrade linux-image-generic-64kUpgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-genericUpgrade linux-image-azure-lts-24.04Upgrade linux-image-6.8.0-1029-awsUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-nvidia-64k-6.8Upgrade linux-image-6.8.0-1026-oracleUpgrade linux-image-nvidiaUpgrade linux-image-oem-22.04cUpgrade linux-image-generic-lpaeUpgrade linux-image-6.8.0-1026-ibmUpgrade linux-image-6.11.0-1012-azureUpgrade linux-image-6.11.0-1011-awsUpgrade linux-image-6.11.0-1017-oemUpgrade linux-image-virtualUpgrade linux-image-6.8.0-1029-azureUpgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-lowlatency-hwe-24.04Upgrade linux-image-6.11.0-1011-lowlatency-64kUpgrade linux-image-6.11.0-1007-realtimeUpgrade linux-image-azure-fdeUpgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-lowlatencyUpgrade linux-image-lowlatency-64k-hwe-24.04Upgrade linux-image-gkeop-6.8Upgrade linux-image-6.8.0-1025-gke | Mar 28, 2025 | Dec 29, 2024 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Oct 9, 2025 | Dec 29, 2024 |
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