CVE-2022-1419

Name	CVE-2022-1419
Description	The root cause of this vulnerability is that the ioctl$DRM_IOCTL_MODE_DESTROY_DUMB can decrease refcount of drm_vgem_gem_object (created in vgem_gem_dumb_create) concurrently, and vgem_gem_dumb_create will access the freed drm_vgem_gem_object.
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	DSA-5173-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
linux (PTS)	buster	4.19.249-2	fixed
	buster (security)	4.19.269-1	fixed
	bullseye	5.10.158-2	fixed
	bullseye (security)	5.10.162-1	fixed
	bookworm	6.1.15-1	fixed
	sid	6.1.20-1	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
linux	source	buster	4.19.249-2		DSA-5173-1
linux	source	(unstable)	5.5.13-1

https://www.openwall.com/lists/oss-security/2022/04/21/1
Fixed by: https://git.kernel.org/linus/4b848f20eda5974020f043ca14bacf7a7e634fc8 (5.6-rc2)