{"id":"CVE-2023-6204","details":"On some systems—depending on the graphics settings and drivers—it was possible to force an out-of-bounds read and leak memory data into the images created on the canvas element. This vulnerability affects Firefox \u003c 120, Firefox ESR \u003c 115.5.0, and Thunderbird \u003c 115.5.","modified":"2026-04-16T04:32:44.347999886Z","published":"2023-11-21T15:15:07.687Z","related":["ALSA-2023:7500","ALSA-2023:7501","ALSA-2023:7507","ALSA-2023:7508","SUSE-SU-2023:4588-1","SUSE-SU-2023:4912-1","SUSE-SU-2023:4928-1","SUSE-SU-2023:4929-1","openSUSE-SU-2024:13459-1","openSUSE-SU-2024:13468-1","openSUSE-SU-2024:14572-1"],"references":[{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2023/11/msg00030.html"},{"type":"ADVISORY","url":"https://www.mozilla.org/security/advisories/mfsa2023-49/"},{"type":"ADVISORY","url":"https://www.mozilla.org/security/advisories/mfsa2023-50/"},{"type":"ADVISORY","url":"https://www.mozilla.org/security/advisories/mfsa2023-52/"},{"type":"ADVISORY","url":"https://www.debian.org/security/2023/dsa-5561"},{"type":"REPORT","url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1841050"},{"type":"ARTICLE","url":"https://lists.debian.org/debian-lts-announce/2023/11/msg00017.html"}],"affected":[{"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-6204.json","unresolved_ranges":[{"events":[{"introduced":"0"},{"fixed":"120.0"}]},{"events":[{"introduced":"0"},{"fixed":"115.5.0"}]},{"events":[{"introduced":"0"},{"fixed":"115.5"}]},{"events":[{"introduced":"0"},{"last_affected":"10.0"}]},{"events":[{"introduced":"0"},{"last_affected":"11.0"}]},{"events":[{"introduced":"0"},{"last_affected":"12.0"}]}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N"}]}