{"id":"UBUNTU-CVE-2014-7933","details":"Use-after-free vulnerability in the matroska_read_seek function in libavformat/matroskadec.c in FFmpeg before 2.5.1, as used in Google Chrome before 40.0.2214.91, allows remote attackers to cause a denial of service or possibly have unspecified other impact via a crafted Matroska file that triggers improper maintenance of tracks data.","modified":"2026-04-22T09:50:49.716449Z","published":"2015-01-22T00:00:00Z","related":["USN-2476-1"],"upstream":["CVE-2014-7933"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2014-7933"},{"type":"REPORT","url":"https://code.google.com/p/chromium/issues/detail?id=427266"},{"type":"REPORT","url":"http://googlechromereleases.blogspot.com/2015/01/stable-update.html"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-2476-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2014-7933"}],"affected":[{"package":{"name":"chromium-browser","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/chromium-browser@40.0.2214.94-0ubuntu0.14.04.1.1068?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"40.0.2214.94-0ubuntu0.14.04.1.1068"}]}],"versions":["29.0.1547.65-0ubuntu2","31.0.1650.63-0ubuntu1~20131204.1","32.0.1700.107-0ubuntu1~20140204.977.1","33.0.1750.152-0ubuntu1~pkg995.1","34.0.1847.116-0ubuntu2","36.0.1985.125-0ubuntu1.14.04.0~pkg1029","37.0.2062.94-0ubuntu0.14.04.1~pkg1042","37.0.2062.120-0ubuntu0.14.04.1~pkg1049","38.0.2125.111-0ubuntu0.14.04.1.1061","39.0.2171.65-0ubuntu0.14.04.1.1064"],"ecosystem_specific":{"binaries":[{"binary_version":"40.0.2214.94-0ubuntu0.14.04.1.1068","binary_name":"chromium-browser"},{"binary_version":"40.0.2214.94-0ubuntu0.14.04.1.1068","binary_name":"chromium-browser-l10n"},{"binary_version":"40.0.2214.94-0ubuntu0.14.04.1.1068","binary_name":"chromium-chromedriver"},{"binary_version":"40.0.2214.94-0ubuntu0.14.04.1.1068","binary_name":"chromium-codecs-ffmpeg"},{"binary_version":"40.0.2214.94-0ubuntu0.14.04.1.1068","binary_name":"chromium-codecs-ffmpeg-extra"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2014/UBUNTU-CVE-2014-7933.json"}},{"package":{"name":"libav","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/libav@6:9.20-0ubuntu0.14.04.1?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6:9.20-0ubuntu0.14.04.1"}]}],"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"],"ecosystem_specific":{"binaries":[{"binary_version":"6:9.20-0ubuntu0.14.04.1","binary_name":"libav-tools"},{"binary_version":"6:9.20-0ubuntu0.14.04.1","binary_name":"libavcodec-extra"},{"binary_version":"6:9.20-0ubuntu0.14.04.1","binary_name":"libavcodec-extra-54"},{"binary_version":"6:9.20-0ubuntu0.14.04.1","binary_name":"libavcodec54"},{"binary_version":"6:9.20-0ubuntu0.14.04.1","binary_name":"libavdevice-extra-53"},{"binary_version":"6:9.20-0ubuntu0.14.04.1","binary_name":"libavdevice53"},{"binary_version":"6:9.20-0ubuntu0.14.04.1","binary_name":"libavfilter-extra-3"},{"binary_version":"6:9.20-0ubuntu0.14.04.1","binary_name":"libavfilter3"},{"binary_version":"6:9.20-0ubuntu0.14.04.1","binary_name":"libavformat-extra-54"},{"binary_version":"6:9.20-0ubuntu0.14.04.1","binary_name":"libavformat54"},{"binary_version":"6:9.20-0ubuntu0.14.04.1","binary_name":"libavresample1"},{"binary_version":"6:9.20-0ubuntu0.14.04.1","binary_name":"libavutil-extra-52"},{"binary_version":"6:9.20-0ubuntu0.14.04.1","binary_name":"libavutil52"},{"binary_version":"6:9.20-0ubuntu0.14.04.1","binary_name":"libswscale-extra-2"},{"binary_version":"6:9.20-0ubuntu0.14.04.1","binary_name":"libswscale2"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2014/UBUNTU-CVE-2014-7933.json"}},{"package":{"name":"oxide-qt","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/oxide-qt@1.4.2-0ubuntu0.14.04.1?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.2-0ubuntu0.14.04.1"}]}],"versions":["1.0.0~bzr437-0ubuntu1","1.0.0~bzr452-0ubuntu1","1.0.0~bzr475-0ubuntu1","1.0.0~bzr490-0ubuntu1","1.0.0~bzr501-0ubuntu1","1.0.0~bzr501-0ubuntu2","1.0.4-0ubuntu0.14.04.1","1.0.5-0ubuntu0.14.04.1","1.1.2-0ubuntu0.14.04.1","1.2.5-0ubuntu0.14.04.1","1.3.4-0ubuntu0.14.04.1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.4.2-0ubuntu0.14.04.1","binary_name":"liboxideqt-qmlplugin"},{"binary_version":"1.4.2-0ubuntu0.14.04.1","binary_name":"liboxideqtcore0"},{"binary_version":"1.4.2-0ubuntu0.14.04.1","binary_name":"liboxideqtquick0"},{"binary_version":"1.4.2-0ubuntu0.14.04.1","binary_name":"oxideqmlscene"},{"binary_version":"1.4.2-0ubuntu0.14.04.1","binary_name":"oxideqt-chromedriver"},{"binary_version":"1.4.2-0ubuntu0.14.04.1","binary_name":"oxideqt-codecs"},{"binary_version":"1.4.2-0ubuntu0.14.04.1","binary_name":"oxideqt-codecs-extra"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2014/UBUNTU-CVE-2014-7933.json"}}],"schema_version":"1.7.5","severity":[{"type":"Ubuntu","score":"medium"}]}