CVE-2023-3390
Use-after-free in Linux kernel's netfilter subsystem
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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 4.14.322, 4.19.291, 5.4.251, 5.10.188, 5.15.118, and 2 more
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- 1 proof of concept on GitHub
Summary
A use-after-free vulnerability was found in the Linux kernel's netfilter subsystem in net/netfilter/nf_tables_api.c. Mishandled error handling with NFT_MSG_NEWRULE makes it possible to use a dangling pointer in the same transaction causing a use-after-free vulnerability. This flaw allows a local attacker with user access to cause a privilege escalation issue. We recommend upgrading past commit 1240eb93f0616b21c675416516ff3d74798fdc97
Timeline
- CVE published
- Record last updated
Affected versions
- kernel
From 3.16 · fixed in 4.14.322; From 4.15 · fixed in 4.19.291; From 4.20 · fixed in 5.4.251; From 5.5 · fixed in 5.10.188; From 5.11 · fixed in 5.15.118; From 5.16 · fixed in 6.1.35; From 6.2 · fixed in 6.3.9