Riskcovery

CVE-2023-52923

netfilter: nf_tables: adapt set backend to use GC transaction API

State
Published
Severity
7.8 High
Published
Jan 20, 2025
Updated
Aug 5, 2026
Reserved
Aug 21, 2024

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
3.17.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HLinux

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 9d0982927e79049675cb6c6c04a0ebb3dad5a434 to before cb4d00b563675ba8ff6ef94b077f58d816f68ba3Affected
  • 9d0982927e79049675cb6c6c04a0ebb3dad5a434 to before c357648929c8dff891502349769aafb8f0452bc2Affected
  • 9d0982927e79049675cb6c6c04a0ebb3dad5a434 to before 146c76866795553dbc19998f36718d7986ad302bAffected
  • 9d0982927e79049675cb6c6c04a0ebb3dad5a434 to before 479a2cf5259347d6a1f658b0f791d27a34908e91Affected
  • 9d0982927e79049675cb6c6c04a0ebb3dad5a434 to before df650d6a4bf47248261b61ef6b174d7c54034d15Affected
  • 9d0982927e79049675cb6c6c04a0ebb3dad5a434 to before e4d71d6a9c7db93f7bf20c3a0f0659d63d7de681Affected
  • 9d0982927e79049675cb6c6c04a0ebb3dad5a434 to before f6c383b8c31a93752a52697f8430a71dcbc46adfAffected
LinuxLinux
  • 4.1Affected
  • before 4.1Not affected
  • 4.19.316 through 4.19.*Not affected
  • 5.4.262 through 5.4.*Not affected
  • 5.10.198 through 5.10.*Not affected
  • 5.15.134 through 5.15.*Not affected
  • 6.1.56 through 6.1.*Not affected
  • 6.4.11 through 6.4.*Not affected
  • 6.5 and laterNot affected

References

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