CVE-2025-68350

Name	CVE-2025-68350
Description	In the Linux kernel, the following vulnerability has been resolved: exfat: fix divide-by-zero in exfat_allocate_bitmap The variable max_ra_count can be 0 in exfat_allocate_bitmap(), which causes a divide-by-zero error in the subsequent modulo operation (i % max_ra_count), leading to a system crash. When max_ra_count is 0, it means that readahead is not used. This patch load the bitmap without readahead.
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	fixed
	bullseye (security)	5.10.247-1	fixed
	bookworm	6.1.148-1	fixed
	bookworm (security)	6.1.158-1	fixed
	trixie	6.12.57-1	fixed
	trixie (security)	6.12.48-1	fixed
	forky	6.17.12-1	fixed
	sid	6.17.13-1	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
linux	source	(unstable)	(not affected)

- linux <not-affected> (Vulnerable code not present)
https://git.kernel.org/linus/d70a5804c563b5e34825353ba9927509df709651 (6.19-rc1)