High 8.8Published Dec 30, 2025

CVE-2023-54318net/smc: use smc_lgr_list.lock to protect smc_lgr_list.list iterate in smcr_port_add

Updated under an hour ago (2026-10-19 09:50 UTC)

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: net/smc: use smc_lgr_list.lock to protect smc_lgr_list.list iterate in smcr_port_add While doing smcr_port_add, there maybe linkgroup add into or delete from smc_lgr_list.list at the same time, which may result kernel crash. So, use smc_lgr_list.lock to protect smc_lgr_list.list iterate in smcr_port_add. The crash calltrace show below: BUG: kernel NULL pointer dereference, address: 0000000000000000 PGD 0 P4D 0 Oops: 0000 [#1] SMP NOPTI CPU: 0 PID: 559726 Comm: kworker/0:92 Kdump: loaded Tainted: G Hardware name: Alibaba Cloud Alibaba Cloud ECS, BIOS 449e491 04/01/2014 Workqueue: events smc_ib_port_event_work [smc] RIP: 0010:smcr_port_add+0xa6/0xf0 [smc] RSP: 0000:ffffa5a2c8f67de0 EFLAGS: 00010297 RAX: 0000000000000001 RBX: ffff9935e0650000 RCX: 0000000000000000 RDX: 0000000000000010 RSI: ffff9935e0654290 RDI: ffff9935c8560000 RBP: 0000000000000000 R08: 0000000000000000 R09: ffff9934c0401918 R10: 0000000000000000 R11: ffffffffb4a5c278 R12: ffff99364029aae4 R13: ffff99364029aa00 R14: 00000000ffffffed R15: ffff99364029ab08 FS: 0000000000000000(0000) GS:ffff994380600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 0000000f06a10003 CR4: 0000000002770ef0 PKRU: 55555554 Call Trace: smc_ib_port_event_work+0x18f/0x380 [smc] process_one_work+0x19b/0x340 worker_thread+0x30/0x370 ? process_one_work+0x340/0x340 kthread+0x114/0x130 ? __kthread_cancel_work+0x50/0x50 ret_from_fork+0x1f/0x30

CVSS: 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Deferred
Record last updated: Oct 15, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 1f90a05d9ff907c70456e7c9d7058372679a88c6 before d1c6c93c27a4bf48006ab16cd9b38d85559d7645; from 1f90a05d9ff907c70456e7c9d7058372679a88c6 before 06b4934ab2b534bb92935c7601852066ebb9eab8; from 1f90a05d9ff907c70456e7c9d7058372679a88c6 before 70c8d17007dc4a07156b7da44509527990e569b3; from 1f90a05d9ff907c70456e7c9d7058372679a88c6 before b717463610a27fc0b58484cfead7a623d5913e61; from 1f90a05d9ff907c70456e7c9d7058372679a88c6 before f5146e3ef0a9eea405874b36178c19a4863b8989	CNA record

References

https://git.kernel.org/stable/c/d1c6c93c27a4bf48006ab16cd9b38d85559d7645
https://git.kernel.org/stable/c/06b4934ab2b534bb92935c7601852066ebb9eab8
https://git.kernel.org/stable/c/70c8d17007dc4a07156b7da44509527990e569b3
https://git.kernel.org/stable/c/b717463610a27fc0b58484cfead7a623d5913e61
https://git.kernel.org/stable/c/f5146e3ef0a9eea405874b36178c19a4863b8989

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.