CVE-2023-6817

Name	CVE-2023-6817
Description	A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation. The function nft_pipapo_walk did not skip inactive elements during set walk which could lead double deactivations of PIPAPO (Pile Packet Policies) elements, leading to use-after-free. We recommend upgrading past commit 317eb9685095678f2c9f5a8189de698c5354316a.
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-3711-1, DSA-5593-1, DSA-5594-1

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	6.11.10-1	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	5.10.205-2	DSA-5594-1
linux	source	bookworm	6.1.69-1	DSA-5593-1
linux	source	(unstable)	6.6.8-1
linux-5.10	source	buster	5.10.205-2~deb10u1	DLA-3711-1

Notes

[buster] - linux <not-affected> (Vulnerable code not present)
https://git.kernel.org/linus/317eb9685095678f2c9f5a8189de698c5354316a (6.7-rc5)
https://www.openwall.com/lists/oss-security/2023/12/22/6