| Name | CVE-2022-32250 |
| Description | net/netfilter/nf_tables_api.c in the Linux kernel through 5.18.1 allows a local user (able to create user/net namespaces) to escalate privileges to root because an incorrect NFT_STATEFUL_EXPR check leads to a use-after-free. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub advisories/code/issues, web search, more) |
| References | DLA-3065-1, DSA-5161-1, DSA-5173-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| linux (PTS) | buster | 4.19.249-2 | fixed |
| buster (security) | 4.19.269-1 | fixed | |
| bullseye | 5.10.158-2 | fixed | |
| bullseye (security) | 5.10.162-1 | fixed | |
| bookworm | 6.1.15-1 | fixed | |
| sid | 6.1.20-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| linux | source | stretch | 4.9.320-2 | DLA-3065-1 | ||
| linux | source | buster | 4.19.249-2 | DSA-5173-1 | ||
| linux | source | bullseye | 5.10.120-1 | DSA-5161-1 | ||
| linux | source | (unstable) | 5.18.2-1 |
https://www.openwall.com/lists/oss-security/2022/05/31/1
https://git.kernel.org/linus/520778042ccca019f3ffa136dd0ca565c486cedd
Was previously also tracked as CVE-2022-1966
https://github.com/theori-io/CVE-2022-32250-exploit
https://research.nccgroup.com/2022/09/01/settlers-of-netlink-exploiting-a-limited-uaf-in-nf_tables-cve-2022-32250/
https://blog.theori.io/research/CVE-2022-32250-linux-kernel-lpe-2022/