CVE-2026-88384

Name	CVE-2026-88384
Description	OpenEXR 3.4.14 contains a NULL Pointer Dereference in the C++ attribute parsing path. A specially crafted EXR file containing an unknown-type attribute with dataSize set to zero causes the parser to create an opaque attribute with a NULL packed_data pointer. The OpaqueAttribute constructor passes the NULL pointer to memcpy() without validating the zero-size condition, resulting in undefined behavior and process termination, leading to 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)
Debian Bugs	1149061

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
openexr (PTS)	bookworm	3.1.5-5	vulnerable
	trixie	3.1.13-2	vulnerable
	forky, sid	3.4.15+ds-1	vulnerable

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
openexr	source	(unstable)	(unfixed)			1149061

Notes

https://github.com/AcademySoftwareFoundation/openexr/issues/2612
https://github.com/AcademySoftwareFoundation/openexr/pull/2615
https://github.com/AcademySoftwareFoundation/openexr/commit/e782bcc1ffe1cc9edfaa5dbad4f28e866eaf9bbb (v3.5.0-rc)