CVE-2026-40333

Name	CVE-2026-40333
Description	libgphoto2 is a camera access and control library. In versions up to and including 2.5.33, two functions in camlibs/ptp2/ptp-pack.c accept a data pointer but no length parameter, performing unbounded reads. Their callers in ptp_unpack_EOS_events() have xsize available but never pass it, leaving both functions unable to validate reads against the actual buffer boundary. Commit 1817ecead20c2aafa7549dac9619fe38f47b2f53 patches the issue.
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
libgphoto2 (PTS)	bullseye	2.5.27-1	vulnerable
	bookworm	2.5.30-1	vulnerable
	trixie	2.5.31-4	vulnerable
	forky, sid	2.5.33-1	vulnerable

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
libgphoto2	source	(unstable)	(unfixed)

Notes

https://github.com/gphoto/libgphoto2/security/advisories/GHSA-hq94-cp6h-3gjp
Fixed by: https://github.com/gphoto/libgphoto2/commit/1817ecead20c2aafa7549dac9619fe38f47b2f53