{"id":"UBUNTU-CVE-2026-53701","details":"An out-of-bounds write vulnerability was found in GStreamer's H.266/VVC PPS picture partition parser in gst-plugins-bad. In the multi-slice-in-tile processing of gst_h266_parser_parse_picture_partition() (gsth266parser.c), the loop iterates without checking that the slice index stays within bounds, writing past three fixed-size arrays (slice_height_in_ctus, slice_top_left_ctu_x, slice_top_left_ctu_y) in the GstH266PPS structure. While the initial proof-of-concept demonstrated a 4-byte out-of-bounds write, the code permits larger writes across multiple iterations. A crafted H.266/VVC media file can trigger this vulnerability.","modified":"2026-06-17T20:15:32.474481448Z","published":"2026-06-11T19:16:00Z","related":["USN-8446-1"],"upstream":["CVE-2026-53701"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-53701"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-53701"},{"type":"REPORT","url":"https://gstreamer.freedesktop.org/security/sa-2026-0026.html"},{"type":"REPORT","url":"https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/11581"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-53701"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2487611"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8446-1"}],"affected":[{"package":{"name":"gst-plugins-bad1.0","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/gst-plugins-bad1.0?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.2.0-3ubuntu5","1.2.1-1ubuntu1","1.2.1-1ubuntu2","1.2.2-1ubuntu1","1.2.2-1ubuntu2","1.2.2-1ubuntu4","1.2.3-1ubuntu1","1.2.3-1ubuntu2","1.2.4-1~ubuntu1","1.2.4-1~ubuntu1.1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.2.4-1~ubuntu1.1","binary_name":"gstreamer1.0-hybris"},{"binary_name":"gstreamer1.0-plugins-bad","binary_version":"1.2.4-1~ubuntu1.1"},{"binary_version":"1.2.4-1~ubuntu1.1","binary_name":"gstreamer1.0-plugins-bad-faad"},{"binary_name":"gstreamer1.0-plugins-bad-videoparsers","binary_version":"1.2.4-1~ubuntu1.1"},{"binary_version":"1.2.4-1~ubuntu1.1","binary_name":"libgstreamer-plugins-bad1.0-0"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-53701.json"}},{"package":{"name":"gst-plugins-bad1.0","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/gst-plugins-bad1.0?arch=source&distro=esm-apps%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.6.0-1ubuntu1","1.6.1-1ubuntu1","1.6.2-1ubuntu1","1.7.1-1ubuntu1","1.7.1-1ubuntu3","1.7.1-1ubuntu4","1.7.2-1ubuntu1","1.7.90-1ubuntu2","1.7.91-1ubuntu1","1.8.0-1ubuntu1","1.8.1-1ubuntu0.1","1.8.2-1ubuntu0.1","1.8.2-1ubuntu0.2","1.8.3-1ubuntu0.2","1.8.3-1ubuntu0.2+esm1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.8.3-1ubuntu0.2+esm1","binary_name":"gir1.2-gst-plugins-bad-1.0"},{"binary_name":"gstreamer1.0-hybris","binary_version":"1.8.3-1ubuntu0.2+esm1"},{"binary_name":"gstreamer1.0-plugins-bad","binary_version":"1.8.3-1ubuntu0.2+esm1"},{"binary_name":"gstreamer1.0-plugins-bad-faad","binary_version":"1.8.3-1ubuntu0.2+esm1"},{"binary_name":"gstreamer1.0-plugins-bad-videoparsers","binary_version":"1.8.3-1ubuntu0.2+esm1"},{"binary_version":"1.8.3-1ubuntu0.2+esm1","binary_name":"libgstreamer-plugins-bad1.0-0"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-53701.json"}},{"package":{"name":"gst-plugins-bad1.0","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/gst-plugins-bad1.0?arch=source&distro=esm-apps%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.12.3-1ubuntu1","1.12.3-1ubuntu2","1.12.3-2ubuntu1","1.12.4-2ubuntu1","1.12.4-2ubuntu2","1.13.1-1ubuntu1","1.13.91-1ubuntu1","1.14.0-1ubuntu1","1.14.1-1ubuntu1~ubuntu18.04.1","1.14.4-1ubuntu1~ubuntu18.04.1","1.14.5-0ubuntu1~18.04.1","1.14.5-0ubuntu1~18.04.1+esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"gir1.2-gst-plugins-bad-1.0","binary_version":"1.14.5-0ubuntu1~18.04.1+esm1"},{"binary_version":"1.14.5-0ubuntu1~18.04.1+esm1","binary_name":"gstreamer1.0-opencv"},{"binary_name":"gstreamer1.0-plugins-bad","binary_version":"1.14.5-0ubuntu1~18.04.1+esm1"},{"binary_version":"1.14.5-0ubuntu1~18.04.1+esm1","binary_name":"libgstreamer-opencv1.0-0"},{"binary_name":"libgstreamer-plugins-bad1.0-0","binary_version":"1.14.5-0ubuntu1~18.04.1+esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-53701.json"}},{"package":{"name":"gst-plugins-bad1.0","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/gst-plugins-bad1.0?arch=source&distro=esm-apps%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.16.1-1ubuntu1","1.16.1-1ubuntu3","1.16.1-1ubuntu4","1.16.1-1ubuntu5","1.16.1-1ubuntu6","1.16.1-1ubuntu8","1.16.2-1ubuntu1","1.16.2-1ubuntu2","1.16.2-2ubuntu1","1.16.2-2.1ubuntu1","1.16.3-0ubuntu1","1.16.3-0ubuntu1.1","1.16.3-0ubuntu1.1+esm1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.16.3-0ubuntu1.1+esm1","binary_name":"gir1.2-gst-plugins-bad-1.0"},{"binary_version":"1.16.3-0ubuntu1.1+esm1","binary_name":"gstreamer1.0-opencv"},{"binary_name":"gstreamer1.0-plugins-bad","binary_version":"1.16.3-0ubuntu1.1+esm1"},{"binary_name":"libgstreamer-opencv1.0-0","binary_version":"1.16.3-0ubuntu1.1+esm1"},{"binary_name":"libgstreamer-plugins-bad1.0-0","binary_version":"1.16.3-0ubuntu1.1+esm1"}]},"database_spec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