CVE-2025-40200

Name	CVE-2025-40200
Description	In the Linux kernel, the following vulnerability has been resolved: Squashfs: reject negative file sizes in squashfs_read_inode() Syskaller reports a "WARNING in ovl_copy_up_file" in overlayfs. This warning is ultimately caused because the underlying Squashfs file system returns a file with a negative file size. This commit checks for a negative file size and returns EINVAL. [phillip@squashfs.org.uk: only need to check 64 bit quantity]
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)

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)	5.10.244-1	vulnerable
	bookworm	6.1.148-1	vulnerable
	bookworm (security)	6.1.158-1	fixed
	trixie	6.12.43-1	vulnerable
	trixie (security)	6.12.48-1	vulnerable
	forky	6.16.12-2	vulnerable
	sid	6.17.7-2	fixed

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

Package	Type	Release	Fixed Version
linux	source	bookworm	6.1.158-1
linux	source	trixie	6.12.57-1
linux	source	(unstable)	6.17.6-1

https://git.kernel.org/linus/9f1c14c1de1bdde395f6cc893efa4f80a2ae3b2b (6.18-rc1)