CVE-2026-23236

Name	CVE-2026-23236
Description	In the Linux kernel, the following vulnerability has been resolved: fbdev: smscufx: properly copy ioctl memory to kernelspace The UFX_IOCTL_REPORT_DAMAGE ioctl does not properly copy data from userspace to kernelspace, and instead directly references the memory, which can cause problems if invalid data is passed from userspace. Fix this all up by correctly copying the memory before accessing it within the kernel.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-4498-1, DLA-4499-1, DSA-6162-1, DSA-6163-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
linux (PTS)	bullseye	5.10.223-1	vulnerable
	bullseye (security)	5.10.251-1	fixed
	bookworm	6.1.159-1	vulnerable
	bookworm (security)	6.1.164-1	fixed
	trixie	6.12.73-1	vulnerable
	trixie (security)	6.12.74-2	fixed
	forky, sid	6.19.8-1	fixed
linux-6.1 (PTS)	bullseye (security)	6.1.164-1~deb11u1	fixed

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

Package	Type	Release	Fixed Version	Origin
linux	source	bullseye	5.10.251-1	DLA-4498-1
linux	source	bookworm	6.1.164-1	DSA-6163-1
linux	source	trixie	6.12.74-2	DSA-6162-1
linux	source	(unstable)	6.18.13-1
linux-6.1	source	bullseye	6.1.164-1~deb11u1	DLA-4499-1

https://git.kernel.org/linus/120adae7b42faa641179270c067864544a50ab69 (7.0-rc1)