{"id":"UBUNTU-CVE-2026-70628","details":"FFmpeg versions from 0.5 up to, but not including, 9.0 contain a signed integer overflow vulnerability in the DVB subtitle parser in libavcodec/dvbsub_parser.c that allows attackers to trigger a heap buffer overflow by supplying a crafted WTV file. The overflow causes the bounds-check guard expression to wrap to INT_MIN, bypassing the PARSE_BUF_SIZE comparison and invoking memcpy() with attacker-controlled data into a heap buffer, resulting in an out-of-bounds heap write and potential memory corruption or code execution.","modified":"2026-09-10T00:56:42.856569601Z","published":"2026-08-06T22:18:00Z","related":["USN-8680-1","USN-8738-1"],"upstream":["CVE-2026-70628"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-70628"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-70628"},{"type":"REPORT","url":"https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/23897"},{"type":"REPORT","url":"https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/02fc47e13f903768b75f7985a2706a6223ab4506"},{"type":"REPORT","url":"https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/93f2a525ec6c7b467bae68322720d10188fc6e30"},{"type":"REPORT","url":"https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/c6ec28b18cd1eb7d39e6163137367f2d1c62aa7c"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8680-1"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8738-1"}],"affected":[{"package":{"name":"libav","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/libav?arch=source&distro=esm-infra-legacy%2Ftrusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6:0.8.7-1ubuntu2","6:9.10-1ubuntu1","6:9.10-1ubuntu2","6:9.10-1ubuntu5","6:9.10-1ubuntu6","6:9.10-1ubuntu7","6:9.11-2ubuntu1","6:9.11-2ubuntu2","6:9.13-0ubuntu0.14.04.1","6:9.14-0ubuntu0.14.04.1","6:9.16-0ubuntu0.14.04.1","6:9.18-0ubuntu0.14.04.1","6:9.20-0ubuntu0.14.04.1","6:9.20-0ubuntu0.14.04.1+esm1"],"ecosystem_specific":{"binaries":[{"binary_version":"6:9.20-0ubuntu0.14.04.1+esm1","binary_name":"libav-tools"},{"binary_version":"6:9.20-0ubuntu0.14.04.1+esm1","binary_name":"libavcodec-extra"},{"binary_name":"libavcodec-extra-54","binary_version":"6:9.20-0ubuntu0.14.04.1+esm1"},{"binary_version":"6:9.20-0ubuntu0.14.04.1+esm1","binary_name":"libavcodec54"},{"binary_name":"libavdevice-extra-53","binary_version":"6:9.20-0ubuntu0.14.04.1+esm1"},{"binary_name":"libavdevice53","binary_version":"6:9.20-0ubuntu0.14.04.1+esm1"},{"binary_name":"libavfilter-extra-3","binary_version":"6:9.20-0ubuntu0.14.04.1+esm1"},{"binary_name":"libavfilter3","binary_version":"6:9.20-0ubuntu0.14.04.1+esm1"},{"binary_name":"libavformat-extra-54","binary_version":"6:9.20-0ubuntu0.14.04.1+esm1"},{"binary_name":"libavformat54","binary_version":"6:9.20-0ubuntu0.14.04.1+esm1"},{"binary_name":"libavresample1","binary_version":"6:9.20-0ubuntu0.14.04.1+esm1"},{"binary_version":"6:9.20-0ubuntu0.14.04.1+esm1","binary_name":"libavutil-extra-52"},{"binary_name":"libavutil52","binary_version":"6:9.20-0ubuntu0.14.04.1+esm1"},{"binary_name":"libswscale-extra-2","binary_version":"6:9.20-0ubuntu0.14.04.1+esm1"},{"binary_version":"6:9.20-0ubuntu0.14.04.1+esm1","binary_name":"libswscale2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-70628.json"}},{"package":{"name":"ffmpeg","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/ffmpeg?arch=source&distro=esm-apps-legacy%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7:2.8.17-0ubuntu0.1+esm16"}]}],"versions":["7:2.7.2-1build1","7:2.8.1-1ubuntu1","7:2.8.2-1ubuntu1","7:2.8.3-1","7:2.8.4-1","7:2.8.4-1ubuntu1","7:2.8.4-1ubuntu2","7:2.8.4-1ubuntu3","7:2.8.4-1ubuntu4","7:2.8.6-1ubuntu1","7:2.8.6-1ubuntu2","7:2.8.8-0ubuntu0.16.04.1","7:2.8.10-0ubuntu0.16.04.1","7:2.8.11-0ubuntu0.16.04.1","7:2.8.14-0ubuntu0.16.04.1","7:2.8.15-0ubuntu0.16.04.1","7:2.8.15-0ubuntu0.16.04.1+esm1","7:2.8.17-0ubuntu0.1","7:2.8.17-0ubuntu0.1+esm1","7:2.8.17-0ubuntu0.1+esm2","7:2.8.17-0ubuntu0.1+esm3","7:2.8.17-0ubuntu0.1+esm4","7:2.8.17-0ubuntu0.1+esm5","7:2.8.17-0ubuntu0.1+esm6","7:2.8.17-0ubuntu0.1+esm7","7:2.8.17-0ubuntu0.1+esm8","7:2.8.17-0ubuntu0.1+esm9","7:2.8.17-0ubuntu0.1+esm10","7:2.8.17-0ubuntu0.1+esm11","7:2.8.17-0ubuntu0.1+esm12","7:2.8.17-0ubuntu0.1+esm13","7:2.8.17-0ubuntu0.1+esm14","7:2.8.17-0ubuntu0.1+esm15"],"ecosystem_specific":{"availability":"Available 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