CVE-2026-88373

Name	CVE-2026-88373
Description	libde265 commit 4d45a6b contains a NULL pointer dereference vulnerability in the NAL parsing path. When de265_push_NAL() is called with a zero-length NAL unit, the resulting NAL_unit may retain a NULL backing buffer, which is subsequently passed as the destination argument to memcpy() in NAL_unit::set_data(). Although the copy length is zero, this violates the nonnull requirement of memcpy() and results in undefined behavior, causing process termination in UBSan-instrumented builds and denial of service.
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
libde265 (PTS)	bookworm	1.0.11-1+deb12u2	vulnerable
	bookworm (security)	1.0.11-1+deb12u3	vulnerable
	trixie (security), trixie	1.0.15-1+deb13u2	vulnerable
	forky, sid	1.1.3-1	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
libde265	source	(unstable)	1.1.2-1

Notes

[trixie] - libde265 <no-dsa> (Minor issue)
[bookworm] - libde265 <postponed> (Minor issue)
https://github.com/strukturag/libde265/issues/534
Fixed by: https://github.com/strukturag/libde265/commit/f8d324914e43d92af23614f22959cf9eee7bf9ea (v1.1.2)