{"id":"UBUNTU-CVE-2026-49337","details":"libde265 is an open source implementation of the h.265 video codec. Prior to version 1.0.20, a crafted sequence of H.265 NAL units causes `decoder_context::read_slice_NAL()` (`libde265/decctx.cc:481`) to attach slice headers to a finished picture object that has no active image unit, resulting in attacker-controlled unbounded heap growth. The retained headers are never freed until the picture is released, which may not happen during continuous streaming. Version 1.0.20 patches the issue.","modified":"2026-07-21T13:12:57.433051130Z","published":"2026-06-19T21:17:00Z","related":["USN-8573-1"],"upstream":["CVE-2026-49337"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-49337"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-49337"},{"type":"REPORT","url":"https://github.com/strukturag/libde265/security/advisories/GHSA-g5hj-rf9f-7vxm"},{"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-2026-49337.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-2026-49337.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_version":"1.0.4-1ubuntu0.4+esm2","binary_name":"libde265-0"},{"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-2026-49337.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_version":"1.0.8-1ubuntu0.3+esm2","binary_name":"libde265-examples"}],"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-2026-49337.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_version":"1.0.15-1ubuntu0.1","binary_name":"libde265-examples"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-49337.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_version":"1.0.16-1","binary_name":"libde265-0"},{"binary_name":"libde265-examples","binary_version":"1.0.16-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-49337.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":{"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro","binaries":[{"binary_version":"1.0.16-1ubuntu0.1~esm1","binary_name":"libde265-0"},{"binary_version":"1.0.16-1ubuntu0.1~esm1","binary_name":"libde265-examples"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-49337.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L"},{"type":"Ubuntu","score":"medium"}]}