vulntracker.iovulntracker.io
© 2026 vulntracker.io

CVE-2023-54318

net/smc: use smc_lgr_list.lock to protect smc_lgr_list.list iterate in smcr_port_add

HIGH
8.8
CVSS Score
Published: December 30, 2025 at 12:23 PM UTC
Updated: October 15, 2026 at 10:17 PM UTC
1 product affected across 1 vendorLinux Kernel

Using Linux by Linux?

Get instant alerts when new vulnerabilities affect Linux - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Start FreeSign In
Severity
HIGH8.8
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

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

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
90%
1f90a05d9ff907c70456e7c9d7058372679a88c65.8
Vendor states this is fixed in 06b4934ab2b534bb92935c7601852066ebb9eab8 (fixed)
Vendor states this is fixed in 70c8d17007dc4a07156b7da44509527990e569b3 (fixed)
Vendor states this is fixed in b717463610a27fc0b58484cfead7a623d5913e61 (fixed)
Vendor states this is fixed in d1c6c93c27a4bf48006ab16cd9b38d85559d7645 (fixed)
Vendor states this is fixed in f5146e3ef0a9eea405874b36178c19a4863b8989 (fixed)
Vendor states this is fixed in 5.10.195 (unaffected)
Vendor states this is fixed in 5.15.132 (unaffected)
Vendor states this is fixed in 5.8 (unaffected)
Vendor states this is fixed in 6.1.54 (unaffected)
Vendor states this is fixed in 6.5.4 (unaffected)
Vendor states this is fixed in 6.6 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (5)

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

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGHLinux
Vector?

Quick Info

StatusDEFERRED

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create accountSign in
Free plan, no card