CVE-2023-52480

Name	CVE-2023-52480
Description	In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix race condition between session lookup and expire Thread A + Thread B ksmbd_session_lookup \| smb2_sess_setup sess = xa_load \| \| \| xa_erase(&conn->sessions, sess->id); \| \| ksmbd_session_destroy(sess) --> kfree(sess) \| // UAF! \| sess->last_active = jiffies \| + This patch add rwsem to fix race condition between ksmbd_session_lookup and ksmbd_expire_session.
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	vulnerable
	bullseye (security)	5.10.216-1	vulnerable
	bookworm	6.1.76-1	fixed
	bookworm (security)	6.1.90-1	fixed
	sid, trixie	6.7.12-1	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
linux	source	bookworm	6.1.64-1
linux	source	(unstable)	6.5.8-1

https://git.kernel.org/linus/53ff5cf89142b978b1a5ca8dc4d4425e6a09745f (6.6-rc5)