{"id":"DEBIAN-CVE-2026-5121","details":"A flaw was found in libarchive. On 32-bit systems, an integer overflow vulnerability exists in the zisofs block pointer allocation logic. A remote attacker can exploit this by providing a specially crafted ISO9660 image, which can lead to a heap buffer overflow. This could potentially allow for arbitrary code execution on the affected system.","modified":"2026-09-14T17:00:28.016487847Z","published":"2026-03-30T08:16:18.780Z","upstream":["CVE-2026-5121"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-5121"}],"affected":[{"package":{"name":"libarchive","ecosystem":"Debian:12","purl":"pkg:deb/debian/libarchive?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.6.2-1+deb12u4"}]}],"versions":["3.6.2-1","3.6.2-1+deb12u1","3.6.2-1+deb12u2","3.6.2-1+deb12u3"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-5121.json"}},{"package":{"name":"libarchive","ecosystem":"Debian:13","purl":"pkg:deb/debian/libarchive?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.7.4-4+deb13u1"}]}],"versions":["3.7.4-4"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-5121.json"}},{"package":{"name":"libarchive","ecosystem":"Debian:14","purl":"pkg:deb/debian/libarchive?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.8.7-1"}]}],"versions":["3.7.4-4","3.8.4-1","3.8.5-1","3.8.6-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-5121.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"}]}