{"id":"RLSA-2021:3155","summary":"Important: thunderbird security update","details":"Mozilla Thunderbird is a standalone mail and newsgroup client.\n\nThis update upgrades Thunderbird to version 78.13.0.\n\nSecurity Fix(es):\n\n* Mozilla: Uninitialized memory in a canvas object could have led to memory corruption (CVE-2021-29980)\n\n* Mozilla: Incorrect instruction reordering during JIT optimization (CVE-2021-29984)\n\n* Mozilla: Race condition when resolving DNS names could have led to memory corruption (CVE-2021-29986)\n\n* Mozilla: Memory corruption as a result of incorrect style treatment (CVE-2021-29988)\n\n* Mozilla: Memory safety bugs fixed in Thunderbird 78.13 (CVE-2021-29989)\n\n* Mozilla: Use-after-free media channels (CVE-2021-29985)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.","modified":"2026-03-11T05:59:36.650535Z","published":"2021-08-16T09:09:01Z","upstream":["CVE-2021-29980","CVE-2021-29984","CVE-2021-29985","CVE-2021-29986","CVE-2021-29988","CVE-2021-29989"],"references":[{"type":"ADVISORY","url":"https://errata.rockylinux.org/RLSA-2021:3155"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1992417"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1992419"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1992420"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1992421"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1992422"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1992423"}],"affected":[{"package":{"name":"thunderbird","ecosystem":"Rocky Linux:8","purl":"pkg:rpm/rocky-linux/thunderbird?distro=rocky-linux-8-4-legacy&epoch=0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:78.13.0-1.el8_4"}],"database_specific":{"yum_repository":"AppStream"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2021:3155.json"}},{"package":{"name":"thunderbird","ecosystem":"Rocky Linux:8","purl":"pkg:rpm/rocky-linux/thunderbird?distro=rocky-linux-8-5-legacy&epoch=0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:78.13.0-1.el8"}],"database_specific":{"yum_repository":"AppStream"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2021:3155.json"}}],"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:H/A:H"}],"credits":[{"name":"Rocky Enterprise Software Foundation"},{"name":"Red Hat"}]}