CVE-2026-88341

Name	CVE-2026-88341
Description	A reachable assertion vulnerability exists in YARA 4.5.8 when loading crafted .yrc compiled rule files. An attacker can provide a malicious file with an invalid arena configuration (num_buffers=0) that triggers an assertion failure in yr_arena_get_ptr(), causing the application to terminate.
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
yara (PTS)	bookworm	4.2.3-4	vulnerable
	trixie	4.5.2-1	vulnerable
	forky, sid	4.5.8-1	vulnerable

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

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

https://github.com/VirusTotal/yara/issues/2238
Fixed by: https://github.com/NOUIY/yara/commit/0cdff36723cd260243bb2b330bda555693354760