{"id":"DEBIAN-CVE-2026-88340","details":"An invalid pointer release vulnerability exists in YARA 4.5.8 during deserialization of compiled .yrc rule files. The vulnerability is caused by insufficient validation of external-variable pointers, which may lead to invalid free in yr_rules_destroy() or wild pointer access in yr_object_create(). An attacker can provide a specially crafted .yrc file that causes memory corruption and application crash.","modified":"2026-09-26T09:00:17.013416166Z","published":"2026-09-22T20:17:10.250Z","upstream":["CVE-2026-88340"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-88340"}],"affected":[{"package":{"name":"yara","ecosystem":"Debian:12","purl":"pkg:deb/debian/yara?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.2.3-4","4.3.0-1","4.3.2-1","4.4.0-1","4.5.0-1","4.5.0-1~bpo12+1","4.5.1-1","4.5.1-1~bpo12+1","4.5.2-1","4.5.2-1~bpo12+1","4.5.3-1","4.5.4-1","4.5.5-1","4.5.6-1","4.5.7-1","4.5.8-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-88340.json"}},{"package":{"name":"yara","ecosystem":"Debian:13","purl":"pkg:deb/debian/yara?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.5.2-1","4.5.3-1","4.5.4-1","4.5.5-1","4.5.6-1","4.5.7-1","4.5.8-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-88340.json"}},{"package":{"name":"yara","ecosystem":"Debian:14","purl":"pkg:deb/debian/yara?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.5.2-1","4.5.3-1","4.5.4-1","4.5.5-1","4.5.6-1","4.5.7-1","4.5.8-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-88340.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H"}]}