| Name | CVE-2023-4244 |
| Description | 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. |
| 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-3623-1, DLA-3710-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| linux (PTS) | buster | 4.19.249-2 | vulnerable |
| buster (security) | 4.19.304-1 | fixed | |
| bullseye | 5.10.209-2 | fixed | |
| bullseye (security) | 5.10.205-2 | fixed | |
| bookworm | 6.1.76-1 | fixed | |
| bookworm (security) | 6.1.85-1 | fixed | |
| sid, trixie | 6.7.12-1 | fixed | |
| linux-5.10 (PTS) | buster (security) | 5.10.209-2~deb10u1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| linux | source | buster | 4.19.304-1 | DLA-3710-1 | ||
| linux | source | bullseye | 5.10.197-1 | |||
| linux | source | bookworm | 6.1.55-1 | |||
| linux | source | (unstable) | 6.4.13-1 | |||
| linux-5.10 | source | buster | 5.10.197-1~deb10u1 | DLA-3623-1 |
https://lore.kernel.org/netdev/20230810070830.24064-1-pablo@netfilter.org/
https://lore.kernel.org/netdev/20230815223011.7019-1-fw@strlen.de/
https://kernel.dance/3e91b0ebd994635df2346353322ac51ce84ce6d8