CVE-2023-52923 (GCVE-0-2023-52923)

Vulnerability from cvelistv5 – Published: 2025-01-20 10:48 – Updated: 2026-05-11 19:35
VLAI
Title
netfilter: nf_tables: adapt set backend to use GC transaction API
Summary
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.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 9d0982927e79049675cb6c6c04a0ebb3dad5a434 , < cb4d00b563675ba8ff6ef94b077f58d816f68ba3 (git)
Affected: 9d0982927e79049675cb6c6c04a0ebb3dad5a434 , < c357648929c8dff891502349769aafb8f0452bc2 (git)
Affected: 9d0982927e79049675cb6c6c04a0ebb3dad5a434 , < 146c76866795553dbc19998f36718d7986ad302b (git)
Affected: 9d0982927e79049675cb6c6c04a0ebb3dad5a434 , < 479a2cf5259347d6a1f658b0f791d27a34908e91 (git)
Affected: 9d0982927e79049675cb6c6c04a0ebb3dad5a434 , < df650d6a4bf47248261b61ef6b174d7c54034d15 (git)
Affected: 9d0982927e79049675cb6c6c04a0ebb3dad5a434 , < e4d71d6a9c7db93f7bf20c3a0f0659d63d7de681 (git)
Affected: 9d0982927e79049675cb6c6c04a0ebb3dad5a434 , < f6c383b8c31a93752a52697f8430a71dcbc46adf (git)
Create a notification for this product.
Linux Linux Affected: 4.1
Unaffected: 0 , < 4.1 (semver)
Unaffected: 4.19.316 , ≤ 4.19.* (semver)
Unaffected: 5.4.262 , ≤ 5.4.* (semver)
Unaffected: 5.10.198 , ≤ 5.10.* (semver)
Unaffected: 5.15.134 , ≤ 5.15.* (semver)
Unaffected: 6.1.56 , ≤ 6.1.* (semver)
Unaffected: 6.4.11 , ≤ 6.4.* (semver)
Unaffected: 6.5 , ≤ * (original_commit_for_fix)
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Async GC enqueues transaction work that might be\\naborted and retried later.\\n\\nrbtree and pipapo set backends does not set on the _DEAD bit from the\\nsync GC path since this runs in control plane path where mutex is held.\\nIn this case, set elements are deactivated, removed and then released\\nvia RCU callback, sync GC never fails.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: netfilter: nf_tables: adaptar el backend del conjunto para usar la API de transacci\u00f3n de GC Use la API de transacci\u00f3n de GC para reemplazar la antigua y defectuosa API de gc y el enfoque de marca de ocupado. Ya no se eliminan elementos del conjunto de la recolecci\u00f3n de basura as\u00edncrona, en su lugar, se activa el bit _DEAD para que el elemento del conjunto ya no sea visible desde la ruta de b\u00fasqueda. 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  }
}


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