CVE-2025-21687

Name	CVE-2025-21687
Description	In the Linux kernel, the following vulnerability has been resolved: vfio/platform: check the bounds of read/write syscalls count and offset are passed from user space and not checked, only offset is capped to 40 bits, which can be used to read/write out of bounds of the device.
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)	bullseye	5.10.223-1	vulnerable
	bullseye (security)	5.10.226-1	vulnerable
	bookworm	6.1.123-1	vulnerable
	bookworm (security)	6.1.128-1	fixed
	trixie	6.12.12-1	fixed
	sid	6.12.13-1	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
linux	source	bookworm	6.1.128-1
linux	source	(unstable)	6.12.12-1

https://git.kernel.org/linus/ce9ff21ea89d191e477a02ad7eabf4f996b80a69 (6.14-rc1)