CVE-2023-4244
Use-after-free in Linux kernel's netfilter: nf_tables component
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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
- Fix
- Fixed in 4.19.316, 5.4.262, 5.10.198, 5.15.134, 6.1.56, and 1 more
- 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
A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation. Due to a race condition between nf_tables netlink control plane transaction and nft_set element garbage collection, it is possible to underflow the reference counter causing a use-after-free vulnerability. We recommend upgrading past commit 3e91b0ebd994635df2346353322ac51ce84ce6d8.
Timeline
- CVE published
- Record last updated
Affected versions
- kernel
From 0.0 · fixed in 4.19.316; From 4.20 · fixed in 5.4.262; From 5.5 · fixed in 5.10.198; From 5.11 · fixed in 5.15.134; From 5.16 · fixed in 6.1.56; From 6.2 · fixed in 6.4.11