CVE-2024-1086

Name	CVE-2024-1086
Description	A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation. The nft_verdict_init() function allows positive values as drop error within the hook verdict, and hence the nf_hook_slow() function can cause a double free vulnerability when NF_DROP is issued with a drop error which resembles NF_ACCEPT. We recommend upgrading past commit f342de4e2f33e0e39165d8639387aa6c19dff660.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

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)	4.19.304-1	vulnerable
	bullseye	5.10.209-2	fixed
	bullseye (security)	5.10.205-2	vulnerable
	bookworm	6.1.76-1	fixed
	bookworm (security)	6.1.85-1	fixed
	trixie	6.6.15-2	fixed
	sid	6.7.12-1	fixed

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

Package	Type	Release	Fixed Version
linux	source	bullseye	5.10.209-2
linux	source	bookworm	6.1.76-1
linux	source	(unstable)	6.6.15-1

Notes

https://pwning.tech/nftables/
https://kernel.dance/f342de4e2f33e0e39165d8639387aa6c19dff660
https://git.kernel.org/linus/f342de4e2f33e0e39165d8639387aa6c19dff660 (6.8-rc2)
https://github.com/Notselwyn/CVE-2024-1086