CVE-2023-54129

octeontx2-af: Add validation for lmac type

State: Published
Severity: 7.1 High
Published: Dec 24, 2025
Updated: Aug 5, 2026
Reserved: Dec 24, 2025

Description

In the Linux kernel, the following vulnerability has been resolved:

octeontx2-af: Add validation for lmac type

Upon physical link change, firmware reports to the kernel about the change along with the details like speed, lmac_type_id, etc. Kernel derives lmac_type based on lmac_type_id received from firmware.

In a few scenarios, firmware returns an invalid lmac_type_id, which is resulting in below kernel panic. This patch adds the missing validation of the lmac_type_id field.

Internal error: Oops: 96000005 [#1] PREEMPT SMP [ 35.321595] Modules linked in: [ 35.328982] CPU: 0 PID: 31 Comm: kworker/0:1 Not tainted 5.4.210-g2e3169d8e1bc-dirty #17 [ 35.337014] Hardware name: Marvell CN103XX board (DT) [ 35.344297] Workqueue: events work_for_cpu_fn [ 35.352730] pstate: 40400089 (nZcv daIf +PAN -UAO) [ 35.360267] pc : strncpy+0x10/0x30 [ 35.366595] lr : cgx_link_change_handler+0x90/0x180

Scores

CVSS	Score	Vector	Source
3.1	7.1 High	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	61071a871ea6eb2125ece91c1a0dbb124a318c8a to before 4392454c694b13d78c84165c0964729772cd3b73Affected 61071a871ea6eb2125ece91c1a0dbb124a318c8a to before 83a7f27c5b94e43f29f8216a32790751139aa61eAffected 61071a871ea6eb2125ece91c1a0dbb124a318c8a to before afd7660c766c4d317feae004e5cd829390bbc4b0Affected 61071a871ea6eb2125ece91c1a0dbb124a318c8a to before 5c0268b141ad612b6fca13d3a66cfda111716dbbAffected 61071a871ea6eb2125ece91c1a0dbb124a318c8a to before cb5edce271764524b88b1a6866b3e626686d9a33Affected
LinuxLinux	4.20Affected before 4.20Not affected 5.10.259 through 5.10.Not affected 6.1.32 through 6.1.Not affected 6.2.16 through 6.2.Not affected 6.3.3 through 6.3.Not affected 6.4 and laterNot affected

Product

Versions

LinuxLinux

61071a871ea6eb2125ece91c1a0dbb124a318c8a to before 4392454c694b13d78c84165c0964729772cd3b73Affected
61071a871ea6eb2125ece91c1a0dbb124a318c8a to before 83a7f27c5b94e43f29f8216a32790751139aa61eAffected
61071a871ea6eb2125ece91c1a0dbb124a318c8a to before afd7660c766c4d317feae004e5cd829390bbc4b0Affected
61071a871ea6eb2125ece91c1a0dbb124a318c8a to before 5c0268b141ad612b6fca13d3a66cfda111716dbbAffected
61071a871ea6eb2125ece91c1a0dbb124a318c8a to before cb5edce271764524b88b1a6866b3e626686d9a33Affected

LinuxLinux

4.20Affected
before 4.20Not affected
5.10.259 through 5.10.*Not affected
6.1.32 through 6.1.*Not affected
6.2.16 through 6.2.*Not affected
6.3.3 through 6.3.*Not affected
6.4 and laterNot affected

References

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