CVE-2023-52923
netfilter: nf_tables: adapt set backend to use GC transaction API
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
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.
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
4.1
References 7
git.kernel.org
- stable/c/cb4d00b563675ba8ff6ef94b077f58d816f68ba3
- stable/c/c357648929c8dff891502349769aafb8f0452bc2
- stable/c/146c76866795553dbc19998f36718d7986ad302b
- stable/c/479a2cf5259347d6a1f658b0f791d27a34908e91
- stable/c/df650d6a4bf47248261b61ef6b174d7c54034d15
- stable/c/e4d71d6a9c7db93f7bf20c3a0f0659d63d7de681
- stable/c/f6c383b8c31a93752a52697f8430a71dcbc46adf