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.

Metrics

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.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

Vendors Products
Linux
  • Linux Kernel

No data.

No data.

References
Link Providers
https://git.kernel.org/stable/c/146c76866795553dbc19998f36718d7986ad302b cve-icon cve-icon
https://git.kernel.org/stable/c/479a2cf5259347d6a1f658b0f791d27a34908e91 cve-icon cve-icon
https://git.kernel.org/stable/c/c357648929c8dff891502349769aafb8f0452bc2 cve-icon cve-icon
https://git.kernel.org/stable/c/cb4d00b563675ba8ff6ef94b077f58d816f68ba3 cve-icon cve-icon
https://git.kernel.org/stable/c/df650d6a4bf47248261b61ef6b174d7c54034d15 cve-icon cve-icon
https://git.kernel.org/stable/c/e4d71d6a9c7db93f7bf20c3a0f0659d63d7de681 cve-icon cve-icon
https://git.kernel.org/stable/c/f6c383b8c31a93752a52697f8430a71dcbc46adf cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2025012034-CVE-2023-52923-416e@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2023-52923 cve-icon
https://www.cve.org/CVERecord?id=CVE-2023-52923 cve-icon
History

Wed, 16 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.00116}

 epss

{'score': 0.00089}

Tue, 08 Jul 2025 15:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-99

Tue, 21 Jan 2025 02:30:00 +0000

Type Values Removed Values Added
References
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

Moderate

Mon, 20 Jan 2025 11:00:00 +0000

Type Values Removed Values Added
Description 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.
Title netfilter: nf_tables: adapt set backend to use GC transaction API
References
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2025-01-20T10:48:13.723Z

Updated: 2025-05-04T07:46:05.066Z

Reserved: 2024-08-21T06:07:11.018Z

Link: CVE-2023-52923

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2025-01-20T11:15:07.670

Modified: 2025-01-20T11:15:07.670

Link: CVE-2023-52923

cve-icon Redhat

Severity : Moderate

Publid Date: 2025-01-20T00:00:00Z

Links: CVE-2023-52923 - Bugzilla