{"id":"DEBIAN-CVE-2026-54240","details":"libde265 is an open source implementation of the h.265 video codec. Versions prior to 1.1.1 use signed 32-bit arithmetic to calculate pixel offsets, allowing a crafted HEVC stream with large image dimensions to trigger an integer overflow and cause out-of-bounds heap reads or writes, potentially disclosing data, corrupting memory, or crashing the decoder. Version 1.1.1 contains a patch.","modified":"2026-09-20T16:00:07.154953739Z","published":"2026-09-11T22:16:38.083Z","upstream":["CVE-2026-54240"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-54240"}],"affected":[{"package":{"name":"libde265","ecosystem":"Debian:12","purl":"pkg:deb/debian/libde265?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.11-1+deb12u3"}]}],"versions":["1.0.11-1","1.0.11-1+deb12u1","1.0.11-1+deb12u2"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-54240.json"}},{"package":{"name":"libde265","ecosystem":"Debian:13","purl":"pkg:deb/debian/libde265?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.15-1+deb13u1"}]}],"versions":["1.0.15-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-54240.json"}},{"package":{"name":"libde265","ecosystem":"Debian:14","purl":"pkg:deb/debian/libde265?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.1-1"}]}],"versions":["1.0.15-1","1.0.16-1","1.0.18-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-54240.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H"}]}