{"id":"UBUNTU-CVE-2026-95121","details":"An issue in mp4v2 2.0.0 allows an attacker to execute arbitrary code via the MP4RtpAtom::ReadHntiType() in src/atom_rtp.cpp. A specially crafted MP4 file can cause an undersized rtp atom to produce a near-2^64 allocation size through an unchecked offset subtraction","modified":"2026-10-17T13:01:19.352157089Z","published":"2026-10-13T15:17:00Z","upstream":["CVE-2026-95121"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-95121"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-95121"},{"type":"REPORT","url":"https://gist.github.com/1820893135-pixel/c56b6a1627453e67ca2fb7e29bae95c6"},{"type":"REPORT","url":"https://github.com/TechSmith/mp4v2/issues/98"},{"type":"REPORT","url":"https://github.com/TechSmith/mp4v2/pull/100"},{"type":"REPORT","url":"https://github.com/TechSmith/mp4v2/pull/100/changes/c7f4e1da1b75996a053b05b69be8e738bf77a26c"}],"affected":[{"package":{"name":"mp4v2","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/mp4v2?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0.0~dfsg0-3","2.0.0~dfsg0-4"],"ecosystem_specific":{"binaries":[{"binary_name":"libmp4v2-2","binary_version":"2.0.0~dfsg0-4"},{"binary_name":"mp4v2-utils","binary_version":"2.0.0~dfsg0-4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-95121.json"}},{"package":{"name":"mp4v2","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/mp4v2?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0.0~dfsg0-6"],"ecosystem_specific":{"binaries":[{"binary_name":"libmp4v2-2","binary_version":"2.0.0~dfsg0-6"},{"binary_name":"mp4v2-utils","binary_version":"2.0.0~dfsg0-6"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-95121.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}