| Name | CVE-2023-31248 |
| Description | Linux Kernel nftables Use-After-Free Local Privilege Escalation Vulnerability; `nft_chain_lookup_byid()` failed to check whether a chain was active and CAP_NET_ADMIN is in any user or network namespace |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-3512-1, DSA-5453-1 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| linux (PTS) | bullseye | 5.10.223-1 | fixed |
| bullseye (security) | 5.10.226-1 | fixed |
| bookworm | 6.1.115-1 | fixed |
| bookworm (security) | 6.1.119-1 | fixed |
| sid, trixie | 6.12.6-1 | fixed |
The information below is based on the following data on fixed versions.
Notes
[buster] - linux <not-affected> (Vulnerable code not present)
https://www.openwall.com/lists/oss-security/2023/07/05/2
https://www.zerodayinitiative.com/advisories/ZDI-23-899/