{"id":"UBUNTU-CVE-2026-70632","details":"FFmpeg versions from 4.4 up to, but not including, 9.0 contain an out-of-bounds heap write vulnerability in the native GoPro CineForm HD (CFHD) decoder that allows remote attackers to corrupt heap memory by supplying a crafted AVI file during stream probing. The cfhd_decode() function fails to enforce the non-Bayer logical output-width invariant in the transform-type-2 reconstruction path, causing horiz_filter_clip() to write oversized 16-bit sample rows far beyond the allocated output frame buffer, which can be escalated to arbitrary code execution via overwrite of a live cleanup callback pointer.","modified":"2026-09-10T00:56:42.938613700Z","published":"2026-08-06T22:18:00Z","related":["USN-8680-1","USN-8738-1"],"upstream":["CVE-2026-70632"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-70632"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-70632"},{"type":"REPORT","url":"https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/23898"},{"type":"REPORT","url":"https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/1006a2151236f9235bf02822f263b3fb0532111e"},{"type":"REPORT","url":"https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/16b2049d4d5222db6cd7c031409058571c94f6a9"},{"type":"REPORT","url":"https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/db05df9d135fb56a4babb836d5e9f5c1d984e087"},{"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_name":"libav-tools","binary_version":"6:9.20-0ubuntu0.14.04.1+esm1"},{"binary_name":"libavcodec-extra","binary_version":"6:9.20-0ubuntu0.14.04.1+esm1"},{"binary_version":"6:9.20-0ubuntu0.14.04.1+esm1","binary_name":"libavcodec-extra-54"},{"binary_name":"libavcodec54","binary_version":"6:9.20-0ubuntu0.14.04.1+esm1"},{"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_version":"6:9.20-0ubuntu0.14.04.1+esm1","binary_name":"libavfilter-extra-3"},{"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_version":"6:9.20-0ubuntu0.14.04.1+esm1","binary_name":"libavformat54"},{"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_name":"libswscale2","binary_version":"6:9.20-0ubuntu0.14.04.1+esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-70632.json"}},{"package":{"name":"ffmpeg","ecosystem":"Ubuntu:Pro:22.04:LTS","purl":"pkg:deb/ubuntu/ffmpeg?arch=source&distro=esm-apps%2Fjammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7:4.4.2-0ubuntu0.22.04.1+esm14"}]}],"versions":["7:4.4-6ubuntu5","7:4.4.1-2ubuntu1","7:4.4.1-3ubuntu1","7:4.4.1-3ubuntu2","7:4.4.1-3ubuntu3","7:4.4.1-3ubuntu5","7:4.4.2-0ubuntu0.22.04.1","7:4.4.2-0ubuntu0.22.04.1+esm1","7:4.4.2-0ubuntu0.22.04.1+esm2","7:4.4.2-0ubuntu0.22.04.1+esm3","7:4.4.2-0ubuntu0.22.04.1+esm4","7:4.4.2-0ubuntu0.22.04.1+esm5","7:4.4.2-0ubuntu0.22.04.1+esm6","7:4.4.2-0ubuntu0.22.04.1+esm7","7:4.4.2-0ubuntu0.22.04.1+esm8","7:4.4.2-0ubuntu0.22.04.1+esm9","7:4.4.2-0ubuntu0.22.04.1+esm10","7:4.4.2-0ubuntu0.22.04.1+esm11","7:4.4.2-0ubuntu0.22.04.1+esm12","7:4.4.2-0ubuntu0.22.04.1+esm13"],"ecosystem_specific":{"availability":"Available 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