{"id":"CVE-2021-29986","details":"A suspected race condition when calling getaddrinfo led to memory corruption and a potentially exploitable crash. *Note: This issue only affected Linux operating systems. Other operating systems are unaffected.* This vulnerability affects Thunderbird \u003c 78.13, Thunderbird \u003c 91, Firefox ESR \u003c 78.13, and Firefox \u003c 91.","modified":"2026-03-13T01:56:19.742605Z","published":"2021-08-17T20:15:07.933Z","related":["MGASA-2021-0403","MGASA-2021-0407","SUSE-SU-2021:14782-1","SUSE-SU-2021:14821-1","SUSE-SU-2021:14826-1","SUSE-SU-2021:2691-1","SUSE-SU-2021:2694-1","SUSE-SU-2021:2774-1","SUSE-SU-2021:2874-1","SUSE-SU-2021:3191-1","SUSE-SU-2021:3331-1","SUSE-SU-2021:3451-1","SUSE-SU-2022:1577-1","SUSE-SU-2022:1582-1","openSUSE-SU-2021:1184-1","openSUSE-SU-2021:1367-1","openSUSE-SU-2021:2774-1","openSUSE-SU-2021:2874-1","openSUSE-SU-2021:3331-1","openSUSE-SU-2021:3451-1","openSUSE-SU-2024:10600-1","openSUSE-SU-2024:10601-1","openSUSE-SU-2024:14572-1"],"references":[{"type":"ADVISORY","url":"https://www.mozilla.org/security/advisories/mfsa2021-35/"},{"type":"ADVISORY","url":"https://www.mozilla.org/security/advisories/mfsa2021-36/"},{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/202202-03"},{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/202208-14"},{"type":"ADVISORY","url":"https://www.mozilla.org/security/advisories/mfsa2021-33/"},{"type":"ADVISORY","url":"https://www.mozilla.org/security/advisories/mfsa2021-34/"},{"type":"REPORT","url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1696138"}],"affected":[{"database_specific":{"unresolved_ranges":[{"events":[{"introduced":"0"},{"fixed":"91.0"}]},{"events":[{"introduced":"0"},{"fixed":"78.13.0"}]},{"events":[{"introduced":"0"},{"fixed":"78.13.0"}]}],"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-29986.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}