CVE-2023-52923

Medium

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: adapt set backend to use GC transaction API Use the GC transaction API to replace the old and buggy gc API and the busy mark approach. No set elements are removed from async garbage collection anymore, instead the _DEAD bit is set on so the set element is not visible from lookup path anymore. Async GC enqueues transaction work that might be aborted and retried later. rbtree and pipapo set backends does not set on the _DEAD bit from the sync GC path since this runs in control plane path where mutex is held. In this case, set elements are deactivated, removed and then released via RCU callback, sync GC never fails.

Package Linux Kernel
Published 2025-01-20
Last modified 2025-10-15
CVSS version 3.1
Patch available
Yes

CVSS 3.1 score

5.5

out of 10
Medium
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
High
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected versions

Linux kernel versions 4.1 and later are affected. Fixed in 4.19.316, 5.4.262, 5.10.198, 5.15.134, 6.1.56, 6.4.11, 6.5 and their respective stable series.

Affected from
≥ 4.1
Fixed in
✓ 4.19.316 4.19.x ✓ 5.4.262 5.4.x ✓ 5.10.198 5.10.x ✓ 5.15.134 5.15.x ✓ 6.1.56 6.1.x ✓ 6.4.11 6.4.x ✓ 6.5

References

The following references provide additional information about CVE-2023-52923 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

7 patch commits total View all on NVD

Frequently asked questions

  • What is CVE-2023-52923?

    CVE-2023-52923 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 4.1 onward and has been patched in 4.19.316, 5.4.262, 5.10.198 and others. CVE-2023-52923 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2023-52923?

    CVE-2023-52923 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H .

  • Is there a patch available for CVE-2023-52923?

    Yes — CVE-2023-52923 has been patched. Fixed versions include 4.19.316, 5.4.262, 5.10.198 and others. If you are running Linux kernel 4.1 or later up to the fix versions, apply the relevant patch for your kernel branch.

  • Is CVE-2023-52923 actively exploited?

    No — CVE-2023-52923 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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