CVE-2023-3611

Name	CVE-2023-3611
Description	An out-of-bounds write vulnerability in the Linux kernel's net/sched: sch_qfq component can be exploited to achieve local privilege escalation. The qfq_change_agg() function in net/sched/sch_qfq.c allows an out-of-bounds write because lmax is updated according to packet sizes without bounds checks. We recommend upgrading past commit 3e337087c3b5805fe0b8a46ba622a962880b5d64.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DSA-5480-1, DSA-5492-1

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)	4.19.289-2	vulnerable
	bullseye	5.10.178-3	vulnerable
	bullseye (security)	5.10.191-1	fixed
	bookworm	6.1.38-1	vulnerable
	bookworm (security)	6.1.52-1	fixed
	sid, trixie	6.5.3-1	fixed

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

Package	Type	Release	Fixed Version	Origin
linux	source	bullseye	5.10.191-1	DSA-5480-1
linux	source	bookworm	6.1.52-1	DSA-5492-1
linux	source	(unstable)	6.4.4-2

https://git.kernel.org/linus/3e337087c3b5805fe0b8a46ba622a962880b5d64 (6.5-rc2)