CVE-2023-54318 - Vulnerability Details

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

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

Published: 2025-12-30

Score: 5.5 Medium

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Linux

unaffected

Version	Status	Constraints
`1f90a05d9ff907c70456e7c9d7058372679a88c6`	affected	< d1c6c93c27a4bf48006ab16cd9b38d85559d7645
`1f90a05d9ff907c70456e7c9d7058372679a88c6`	affected	< 06b4934ab2b534bb92935c7601852066ebb9eab8
`1f90a05d9ff907c70456e7c9d7058372679a88c6`	affected	< 70c8d17007dc4a07156b7da44509527990e569b3
`1f90a05d9ff907c70456e7c9d7058372679a88c6`	affected	< b717463610a27fc0b58484cfead7a623d5913e61
`1f90a05d9ff907c70456e7c9d7058372679a88c6`	affected	< f5146e3ef0a9eea405874b36178c19a4863b8989

Linux

affected

Version	Status	Constraints
`5.8`	affected	—
`0`	unaffected	< 5.8
`5.10.195`	unaffected	≤ 5.10.*
`5.15.132`	unaffected	≤ 5.15.*
`6.1.54`	unaffected	≤ 6.1.*
`6.5.4`	unaffected	≤ 6.5.*
`6.6`	unaffected	≤ *

No data.

No data available yet.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00035.

Key SSVC decision points have not yet been added.

References

Link	Providers
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/d1c6c93c27a4bf48006ab16cd9b38d85559d7645
https://git.kernel.org/stable/c/f5146e3ef0a9eea405874b36178c19a4863b8989
https://lore.kernel.org/linux-cve-announce/2025123038-CVE-2023-54318-bb2a@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2023-54318
https://www.cve.org/CVERecord?id=CVE-2023-54318

History

Wed, 31 Dec 2025 12:15:00 +0000

Type	Values Removed	Values Added
References		https://lore.kernel.org/linux-cve-announce/2025123038-CVE-2023-54318-bb2a@gregkh/T https://nvd.nist.gov/vuln/detail/CVE-2023-54318 https://www.cve.org/CVERecord?id=CVE-2023-54318
Metrics	threat_severity `None`	cvssV3_1 `{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}` threat_severity `Low`

Tue, 30 Dec 2025 12:45:00 +0000

Type	Values Removed	Values Added
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
Title		net/smc: use smc_lgr_list.lock to protect smc_lgr_list.list iterate in smcr_port_add
First Time appeared		Linux Linux linux Kernel
CPEs		cpe:2.3:o:linux:linux_kernel::::::::
Vendors & Products		Linux Linux linux Kernel
References		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/d1c6c93c27a4bf48006ab16cd9b38d85559d7645 https://git.kernel.org/stable/c/f5146e3ef0a9eea405874b36178c19a4863b8989

Subscriptions

Linux Linux Kernel

MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2025-12-30T12:23:48.134Z

Updated: 2026-05-11T19:59:39.002Z

Reserved: 2025-12-30T12:06:44.531Z

Link: CVE-2023-54318

Vulnrichment

No data.

NVD

Status : Deferred

Published: 2025-12-30T13:16:21.090

Modified: 2026-04-15T00:35:42.020

Link: CVE-2023-54318

Redhat

Severity : Low

Publid Date: 2025-12-30T00:00:00Z

Links: CVE-2023-54318 - Bugzilla

OpenCVE Enrichment

No data.

Weaknesses

No weakness.

Tracking

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

Subscriptions

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