CVE-2022-32250

NameCVE-2022-32250
Descriptionnet/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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
ReferencesDLA-3065-1, DSA-5161-1, DSA-5173-1, ELA-652-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux (PTS)jessie, jessie (lts)3.16.84-1vulnerable
stretch (security), stretch (lts), stretch4.9.320-2fixed
buster, buster (security)4.19.249-2fixed
bullseye5.10.140-1fixed
bullseye (security)5.10.136-1fixed
sid, bookworm5.19.6-1fixed
linux-4.19 (PTS)jessie, jessie (lts)4.19.249-2~deb8u1fixed
stretch (security)4.19.232-1~deb9u1vulnerable
stretch (lts), stretch4.19.249-2~deb9u1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsourcejessie(unfixed)end-of-life
linuxsourcestretch4.9.320-2DLA-3065-1
linuxsourcebuster4.19.249-2DSA-5173-1
linuxsourcebullseye5.10.120-1DSA-5161-1
linuxsource(unstable)5.18.2-1
linux-4.19sourcejessie4.19.249-2~deb8u1ELA-652-1
linux-4.19sourcestretch4.19.249-2~deb9u1ELA-652-1

Notes

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/

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