{"id":"UBUNTU-CVE-2026-54241","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 the sample adaptive offset input-buffer size, allowing a crafted HEVC stream with large dimensions and 16-bit luma samples to cause an integer overflow, an undersized allocation, and an out-of-bounds heap read that may expose heap data in decoded output or crash the decoder. Version 1.1.1 contains a patch.","modified":"2026-09-16T14:01:48.907335453Z","published":"2026-07-01T00:00:00Z","related":["USN-8573-1"],"upstream":["CVE-2026-54241"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-54241"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-54241"},{"type":"REPORT","url":"https://github.com/strukturag/libde265/security/advisories/GHSA-j2qq-x2xq-g9wr"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8573-1"}],"affected":[{"package":{"name":"libde265","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/libde265?arch=source&distro=esm-apps-legacy%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.2-2ubuntu0.16.04.1~esm6"}]}],"versions":["1.0.2-1build1","1.0.2-2","1.0.2-2ubuntu0.16.04.1~esm1","1.0.2-2ubuntu0.16.04.1~esm2","1.0.2-2ubuntu0.16.04.1~esm3","1.0.2-2ubuntu0.16.04.1~esm4","1.0.2-2ubuntu0.16.04.1~esm5"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro","binaries":[{"binary_version":"1.0.2-2ubuntu0.16.04.1~esm6","binary_name":"libde265-0"},{"binary_version":"1.0.2-2ubuntu0.16.04.1~esm6","binary_name":"libde265-examples"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54241.json"}},{"package":{"name":"libde265","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/libde265?arch=source&distro=esm-apps%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.2-2ubuntu0.18.04.1~esm6"}]}],"versions":["1.0.2-2build1","1.0.2-2ubuntu0.18.04.1~esm1","1.0.2-2ubuntu0.18.04.1~esm2","1.0.2-2ubuntu0.18.04.1~esm3","1.0.2-2ubuntu0.18.04.1~esm4","1.0.2-2ubuntu0.18.04.1~esm5"],"ecosystem_specific":{"binaries":[{"binary_version":"1.0.2-2ubuntu0.18.04.1~esm6","binary_name":"libde265-0"},{"binary_name":"libde265-examples","binary_version":"1.0.2-2ubuntu0.18.04.1~esm6"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54241.json"}},{"package":{"name":"libde265","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/libde265?arch=source&distro=esm-apps%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.4-1ubuntu0.4+esm2"}]}],"versions":["1.0.3-1build1","1.0.4-1","1.0.4-1build1","1.0.4-1ubuntu0.1","1.0.4-1ubuntu0.2","1.0.4-1ubuntu0.3","1.0.4-1ubuntu0.4","1.0.4-1ubuntu0.4+esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"libde265-0","binary_version":"1.0.4-1ubuntu0.4+esm2"},{"binary_name":"libde265-examples","binary_version":"1.0.4-1ubuntu0.4+esm2"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54241.json"}},{"package":{"name":"libde265","ecosystem":"Ubuntu:Pro:22.04:LTS","purl":"pkg:deb/ubuntu/libde265?arch=source&distro=esm-apps%2Fjammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.8-1ubuntu0.3+esm2"}]}],"versions":["1.0.8-1","1.0.8-1ubuntu0.1","1.0.8-1ubuntu0.2","1.0.8-1ubuntu0.3","1.0.8-1ubuntu0.3+esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"libde265-0","binary_version":"1.0.8-1ubuntu0.3+esm2"},{"binary_name":"libde265-examples","binary_version":"1.0.8-1ubuntu0.3+esm2"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54241.json"}},{"package":{"name":"libde265","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/libde265?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.15-1ubuntu0.1"}]}],"versions":["1.0.12-2","1.0.13-1","1.0.15-1","1.0.15-1build1","1.0.15-1build2","1.0.15-1build3"],"ecosystem_specific":{"binaries":[{"binary_name":"libde265-0","binary_version":"1.0.15-1ubuntu0.1"},{"binary_name":"libde265-examples","binary_version":"1.0.15-1ubuntu0.1"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54241.json"}},{"package":{"name":"libde265","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/libde265?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.15-1build5","1.0.16-1"],"ecosystem_specific":{"binaries":[{"binary_name":"libde265-0","binary_version":"1.0.16-1"},{"binary_version":"1.0.16-1","binary_name":"libde265-examples"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54241.json"}},{"package":{"name":"libde265","ecosystem":"Ubuntu:Pro:26.04:LTS","purl":"pkg:deb/ubuntu/libde265?arch=source&distro=esm-apps%2Fresolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.16-1ubuntu0.1~esm1"}]}],"versions":["1.0.16-1","1.0.16-1build1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.0.16-1ubuntu0.1~esm1","binary_name":"libde265-0"},{"binary_name":"libde265-examples","binary_version":"1.0.16-1ubuntu0.1~esm1"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54241.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"},{"type":"Ubuntu","score":"medium"}]}