Review reviewHigh

CVE-2023-54262

Linux

In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: Don't clone flow post action attributes second time The code already clones post action attributes in mlx5e_clone_flow_attr_for_post_act(). Creating another copy in mlx5e_tc_post_act_add() is a erroneous leftover from original implementation. Instead, assign handle->attribute to post_attr provided by the caller. Note that cloning the attribute second time is not just wasteful but also causes issues like second copy not being properly updated in neigh update code which leads to following use-after-free: Feb 21 09:...

CVSS: 8.8
EPSS: 0.25%
CISA KEV: Not listed
Published: 2025.12.30

PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability0.25%

Technical severityCVSS 8.8

Vulnerability overview

Affected product and versions

Product: Linux
Affected versions: >= 8300f225268be9ee2c0daf5a3f23929fcdcbf213 < c382b693ffcb1f1ebf60d76ab9dedfe9ea13eedf, >= 8300f225268be9ee2c0daf5a3f23929fcdcbf213 < 8fd1dac646e6b08d03e3f1ad3c5b34255b1e08e8, >= 8300f225268be9ee2c0daf5a3f23929fcdcbf213 < 2d57a514f9ab7d2d40f49b02d93edfcec8c78a9e, >= 8300f225268be9ee2c0daf5a3f23929fcdcbf213 < e9fce818fe003b6c527f25517b9ac08eb4661b5d, >= 5.18
Fixed versions: No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

1
Identify
Confirm that Linux and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE: Not available