{"id":"UBUNTU-CVE-2020-20896","details":"An issue was discovered in function latm_write_packet in libavformat/latmenc.c in Ffmpeg 4.2.1, allows attackers to cause a Denial of Service or other unspecified impacts due to a Null pointer dereference.","modified":"2026-03-03T06:25:42.289865Z","published":"2021-09-20T16:15:00Z","withdrawn":"2026-03-03T05:06:45Z","upstream":["CVE-2020-20896"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-20896"},{"type":"REPORT","url":"https://trac.ffmpeg.org/ticket/8273"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2020-20896"}],"affected":[{"package":{"name":"qtwebengine-opensource-src","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/qtwebengine-opensource-src@5.9.5+dfsg-0ubuntu2?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.9.1+dfsg-4","5.9.1+dfsg-4ubuntu1","5.9.2+dfsg-2ubuntu1","5.9.3+dfsg-0ubuntu1","5.9.4+dfsg-0ubuntu1","5.9.5+dfsg-0ubuntu2"],"ecosystem_specific":{"binaries":[{"binary_name":"libqt5webengine-data","binary_version":"5.9.5+dfsg-0ubuntu2"},{"binary_name":"libqt5webengine5","binary_version":"5.9.5+dfsg-0ubuntu2"},{"binary_name":"libqt5webenginecore5","binary_version":"5.9.5+dfsg-0ubuntu2"},{"binary_name":"libqt5webenginewidgets5","binary_version":"5.9.5+dfsg-0ubuntu2"},{"binary_name":"qml-module-qtwebengine","binary_version":"5.9.5+dfsg-0ubuntu2"},{"binary_name":"qtwebengine5-dev","binary_version":"5.9.5+dfsg-0ubuntu2"},{"binary_name":"qtwebengine5-dev-tools","binary_version":"5.9.5+dfsg-0ubuntu2"},{"binary_version":"5.9.5+dfsg-0ubuntu2","binary_name":"qtwebengine5-doc-html"},{"binary_name":"qtwebengine5-examples","binary_version":"5.9.5+dfsg-0ubuntu2"},{"binary_name":"qtwebengine5-private-dev","binary_version":"5.9.5+dfsg-0ubuntu2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-20896.json"}},{"package":{"name":"qtwebengine-opensource-src","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/qtwebengine-opensource-src@5.12.8+dfsg-0ubuntu1.1?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.12.4+dfsg-1ubuntu1","5.12.4+dfsg-1ubuntu3","5.12.5+dfsg-3ubuntu1","5.12.5+dfsg-6ubuntu2","5.12.5+dfsg-7","5.12.5+dfsg-7build1","5.12.8+dfsg-0ubuntu1","5.12.8+dfsg-0ubuntu1.1"],"ecosystem_specific":{"binaries":[{"binary_name":"libqt5webengine-data","binary_version":"5.12.8+dfsg-0ubuntu1.1"},{"binary_name":"libqt5webengine5","binary_version":"5.12.8+dfsg-0ubuntu1.1"},{"binary_name":"libqt5webenginecore5","binary_version":"5.12.8+dfsg-0ubuntu1.1"},{"binary_name":"libqt5webenginewidgets5","binary_version":"5.12.8+dfsg-0ubuntu1.1"},{"binary_name":"qml-module-qtwebengine","binary_version":"5.12.8+dfsg-0ubuntu1.1"},{"binary_name":"qtwebengine5-dev","binary_version":"5.12.8+dfsg-0ubuntu1.1"},{"binary_name":"qtwebengine5-dev-tools","binary_version":"5.12.8+dfsg-0ubuntu1.1"},{"binary_name":"qtwebengine5-doc-html","binary_version":"5.12.8+dfsg-0ubuntu1.1"},{"binary_name":"qtwebengine5-examples","binary_version":"5.12.8+dfsg-0ubuntu1.1"},{"binary_name":"qtwebengine5-private-dev","binary_version":"5.12.8+dfsg-0ubuntu1.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-20896.json"}},{"package":{"name":"qtwebengine-opensource-src","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/qtwebengine-opensource-src@5.15.9+dfsg-1?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.15.6+dfsg-1","5.15.6+dfsg-2","5.15.7+dfsg-2","5.15.8+dfsg-1","5.15.8+dfsg-1build1","5.15.8+dfsg-1build2","5.15.8+dfsg-2","5.15.9+dfsg-1"],"ecosystem_specific":{"binaries":[{"binary_name":"libqt5pdf5","binary_version":"5.15.9+dfsg-1"},{"binary_name":"libqt5pdfwidgets5","binary_version":"5.15.9+dfsg-1"},{"binary_name":"libqt5webengine-data","binary_version":"5.15.9+dfsg-1"},{"binary_name":"libqt5webengine5","binary_version":"5.15.9+dfsg-1"},{"binary_name":"libqt5webenginecore5","binary_version":"5.15.9+dfsg-1"},{"binary_name":"libqt5webenginewidgets5","binary_version":"5.15.9+dfsg-1"},{"binary_name":"qml-module-qtquick-pdf","binary_version":"5.15.9+dfsg-1"},{"binary_name":"qml-module-qtwebengine","binary_version":"5.15.9+dfsg-1"},{"binary_name":"qt5-image-formats-plugin-pdf","binary_version":"5.15.9+dfsg-1"},{"binary_version":"5.15.9+dfsg-1","binary_name":"qtpdf5-dev"},{"binary_name":"qtpdf5-doc-html","binary_version":"5.15.9+dfsg-1"},{"binary_name":"qtpdf5-examples","binary_version":"5.15.9+dfsg-1"},{"binary_name":"qtwebengine5-dev","binary_version":"5.15.9+dfsg-1"},{"binary_name":"qtwebengine5-dev-tools","binary_version":"5.15.9+dfsg-1"},{"binary_name":"qtwebengine5-doc-html","binary_version":"5.15.9+dfsg-1"},{"binary_name":"qtwebengine5-examples","binary_version":"5.15.9+dfsg-1"},{"binary_name":"qtwebengine5-private-dev","binary_version":"5.15.9+dfsg-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-20896.json"}},{"package":{"name":"qtwebengine-opensource-src","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb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