{"id":"UBUNTU-CVE-2026-88914","details":"A flaw was found in GStreamer's gst-plugins-good isomp4 plugin. When processing a specially crafted MP4 or MOV file containing CEA-608 closed-caption data, an integer overflow in 32-bit unsigned arithmetic can bypass a bounds check in the caption parser. This leads to an out-of-bounds heap read of up to 244 bytes, which is then included in the downstream caption output. An attacker could exploit this by tricking a user into opening a malicious media file, potentially resulting in disclosure of adjacent heap memory or application crash.","modified":"2026-10-02T05:45:11.059826542Z","published":"2026-09-11T02:18:00Z","related":["USN-8863-1"],"upstream":["CVE-2026-88914"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-88914"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-88914"},{"type":"REPORT","url":"https://gstreamer.freedesktop.org/security/sa-2026-0079.html"},{"type":"REPORT","url":"https://gitlab.freedesktop.org/gstreamer/gstreamer/-/work_items/5235"},{"type":"REPORT","url":"https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/12433"},{"type":"REPORT","url":"https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/12437"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-88914"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2531416"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8863-1"}],"affected":[{"package":{"name":"gst-plugins-good1.0","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/gst-plugins-good1.0?arch=source&distro=esm-infra%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.16.3-0ubuntu1.3+esm4"}]}],"versions":["1.16.1-1ubuntu1","1.16.2-1ubuntu1","1.16.2-1ubuntu2","1.16.2-1ubuntu2.1","1.16.3-0ubuntu1","1.16.3-0ubuntu1.1","1.16.3-0ubuntu1.2","1.16.3-0ubuntu1.3","1.16.3-0ubuntu1.3+esm1","1.16.3-0ubuntu1.3+esm2","1.16.3-0ubuntu1.3+esm3"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_name":"gstreamer1.0-gtk3","binary_version":"1.16.3-0ubuntu1.3+esm4"},{"binary_version":"1.16.3-0ubuntu1.3+esm4","binary_name":"gstreamer1.0-plugins-good"},{"binary_name":"gstreamer1.0-pulseaudio","binary_version":"1.16.3-0ubuntu1.3+esm4"},{"binary_version":"1.16.3-0ubuntu1.3+esm4","binary_name":"gstreamer1.0-qt5"},{"binary_name":"libgstreamer-plugins-good1.0-0","binary_version":"1.16.3-0ubuntu1.3+esm4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-88914.json"}},{"package":{"name":"gst-plugins-good1.0","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/gst-plugins-good1.0?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.20.3-0ubuntu1.10"}]}],"versions":["1.18.5-1ubuntu2","1.18.5-1ubuntu3","1.20.0-2ubuntu1","1.20.1-1ubuntu1","1.20.3-0ubuntu1","1.20.3-0ubuntu1.1","1.20.3-0ubuntu1.3","1.20.3-0ubuntu1.4","1.20.3-0ubuntu1.5","1.20.3-0ubuntu1.6","1.20.3-0ubuntu1.7","1.20.3-0ubuntu1.8","1.20.3-0ubuntu1.9"],"ecosystem_specific":{"binaries":[{"binary_name":"gstreamer1.0-gtk3","binary_version":"1.20.3-0ubuntu1.10"},{"binary_version":"1.20.3-0ubuntu1.10","binary_name":"gstreamer1.0-plugins-good"},{"binary_name":"gstreamer1.0-pulseaudio","binary_version":"1.20.3-0ubuntu1.10"},{"binary_version":"1.20.3-0ubuntu1.10","binary_name":"gstreamer1.0-qt5"},{"binary_name":"libgstreamer-plugins-good1.0-0","binary_version":"1.20.3-0ubuntu1.10"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-88914.json"}},{"package":{"name":"gst-plugins-good1.0","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/gst-plugins-good1.0?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.24.2-1ubuntu1.8"}]}],"versions":["1.22.6-1ubuntu1","1.22.6-1ubuntu2","1.22.8-3ubuntu1","1.22.9-1ubuntu1","1.24.0-1ubuntu5","1.24.0-1ubuntu7","1.24.1-2ubuntu1","1.24.2-1ubuntu1","1.24.2-1ubuntu1.1","1.24.2-1ubuntu1.2","1.24.2-1ubuntu1.3","1.24.2-1ubuntu1.4","1.24.2-1ubuntu1.5","1.24.2-1ubuntu1.6","1.24.2-1ubuntu1.7"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"gstreamer1.0-gtk3","binary_version":"1.24.2-1ubuntu1.8"},{"binary_name":"gstreamer1.0-plugins-good","binary_version":"1.24.2-1ubuntu1.8"},{"binary_name":"gstreamer1.0-pulseaudio","binary_version":"1.24.2-1ubuntu1.8"},{"binary_version":"1.24.2-1ubuntu1.8","binary_name":"gstreamer1.0-qt5"},{"binary_name":"gstreamer1.0-qt6","binary_version":"1.24.2-1ubuntu1.8"},{"binary_name":"libgstreamer-plugins-good1.0-0","binary_version":"1.24.2-1ubuntu1.8"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-88914.json"}},{"package":{"name":"gst-plugins-good1.0","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/gst-plugins-good1.0?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.28.2-2ubuntu0.4"}]}],"versions":["1.26.5-1ubuntu2","1.27.2-1ubuntu1","1.27.90-1ubuntu1","1.28.0-1ubuntu1","1.28.0-1ubuntu3","1.28.1-1ubuntu1","1.28.2-2","1.28.2-2ubuntu0.1","1.28.2-2ubuntu0.2","1.28.2-2ubuntu0.3"],"ecosystem_specific":{"binaries":[{"binary_name":"gstreamer1.0-gtk3","binary_version":"1.28.2-2ubuntu0.4"},{"binary_name":"gstreamer1.0-plugins-good","binary_version":"1.28.2-2ubuntu0.4"},{"binary_name":"gstreamer1.0-pulseaudio","binary_version":"1.28.2-2ubuntu0.4"},{"binary_name":"gstreamer1.0-qt5","binary_version":"1.28.2-2ubuntu0.4"},{"binary_name":"gstreamer1.0-qt6","binary_version":"1.28.2-2ubuntu0.4"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-88914.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L"},{"type":"Ubuntu","score":"medium"}]}