CVE-2023-1829

Name	CVE-2023-1829
Description	A use-after-free vulnerability in the Linux Kernel traffic control index filter (tcindex) can be exploited to achieve local privilege escalation. The tcindex_delete function which does not properly deactivate filters in case of a perfect hashes while deleting the underlying structure which can later lead to double freeing the structure. A local attacker user can use this vulnerability to elevate its privileges to root. We recommend upgrading past commit 8c710f75256bb3cf05ac7b1672c82b92c43f3d28.
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-3403-1, DLA-3404-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
linux (PTS)	buster	4.19.249-2	vulnerable
	buster (security)	4.19.282-1	fixed
	bullseye	5.10.178-3	fixed
	bullseye (security)	5.10.179-1	fixed
	bookworm, sid	6.1.27-1	fixed
linux-5.10 (PTS)	buster (security)	5.10.179-1~deb10u1	fixed

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

Package	Type	Release	Fixed Version	Origin
linux	source	buster	4.19.282-1	DLA-3403-1
linux	source	bullseye	5.10.178-1
linux	source	(unstable)	6.1.20-1
linux-5.10	source	buster	5.10.178-3~deb10u1	DLA-3404-1

https://www.openwall.com/lists/oss-security/2023/04/11/3
https://git.kernel.org/linus/8c710f75256bb3cf05ac7b1672c82b92c43f3d28 (6.3-rc1)