{"id":"UBUNTU-CVE-2016-7970","details":"Buffer overflow in the calc_coeff function in libass/ass_blur.c in libass before 0.13.4 allows remote attackers to cause a denial of service via unspecified vectors.","modified":"2026-04-22T11:39:05.437787Z","published":"2017-03-03T16:59:00Z","related":["USN-4797-1"],"upstream":["CVE-2016-7970"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2016-7970"},{"type":"REPORT","url":"http://www.openwall.com/lists/oss-security/2016/10/05/2"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2016-7970"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4797-1"}],"affected":[{"package":{"name":"libass","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/libass@0.13.1-1ubuntu0.1~esm1?arch=source&distro=esm-apps/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.13.1-1ubuntu0.1~esm1"}]}],"versions":["0.12.3-2","0.13.0-1","0.13.1-1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro","binaries":[{"binary_version":"0.13.1-1ubuntu0.1~esm1","binary_name":"libass5"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-7970.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}