CVE-2023-2177

Name	CVE-2023-2177
Description	A null pointer dereference issue was found in the sctp network protocol in net/sctp/stream_sched.c in Linux Kernel. If stream_in allocation is failed, stream_out is freed which would further be accessed. A local user could use this flaw to crash the system or potentially cause a denial of service.
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)	4.19.289-2	vulnerable
	bullseye	5.10.197-1	fixed
	bullseye (security)	5.10.191-1	fixed
	bookworm	6.1.66-1	fixed
	bookworm (security)	6.1.52-1	fixed
	sid, trixie	6.5.13-1	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
linux	source	bullseye	5.10.136-1
linux	source	(unstable)	5.18.16-1

Notes

https://lore.kernel.org/netdev/CADvbK_dWMO0XdAf950Q14pUv99ahS1MRnOtppvosU2w33sO=kw@mail.gmail.com/T/
https://git.kernel.org/linus/181d8d2066c000ba0a0e6940a7ad80f1a0e68e9d (5.19)