CVE-2023-4015

Name	CVE-2023-4015
Description	A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation. On an error when building a nftables rule, deactivating immediate expressions in nft_immediate_deactivate() can lead unbinding the chain and objects be deactivated but later used. We recommend upgrading past commit 0a771f7b266b02d262900c75f1e175c7fe76fec2.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DSA-5492-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
linux (PTS)	bookworm	6.1.176-1	fixed
	bookworm (security)	6.1.187-1	fixed
	trixie	6.12.94-1	fixed
	trixie (security)	6.12.107-1	fixed
	forky	7.1.12-1	fixed
	sid	7.1.13-1	fixed

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

Package	Type	Release	Fixed Version	Origin
linux	source	buster	(not affected)
linux	source	bullseye	(not affected)
linux	source	bookworm	6.1.52-1	DSA-5492-1
linux	source	(unstable)	6.4.11-1

Notes

[bullseye] - linux <not-affected> (Vulnerable code not in a Debian released version)
[buster] - linux <not-affected> (Vulnerable code not present)
https://git.kernel.org/linus/0a771f7b266b02d262900c75f1e175c7fe76fec2 (6.5-rc4)