{"id":"RLSA-2021:3755","summary":"Important: firefox security update","details":"Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability.\n\nThis update upgrades Firefox to version 91.2.0 ESR.\n\nSecurity Fix(es):\n\n* Mozilla: Use-after-free in MessageTask (CVE-2021-38496)\n\n* Mozilla: Memory safety bugs fixed in Firefox 93, Firefox ESR 78.15, and Firefox ESR 91.2 (CVE-2021-38500)\n\n* Mozilla: Memory safety bugs fixed in Firefox 93 and Firefox ESR 91.2 (CVE-2021-38501)\n\n* rust-crossbeam-deque: race condition may lead to double free (CVE-2021-32810)\n\n* Mozilla: Validation message could have been overlaid on another origin (CVE-2021-38497)\n\n* Mozilla: Use-after-free of nsLanguageAtomService object (CVE-2021-38498)\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":"2026-02-04T14:45:03.658220Z","published":"2021-10-11T07:50:46Z","upstream":["CVE-2021-32810","CVE-2021-38496","CVE-2021-38497","CVE-2021-38498","CVE-2021-38500","CVE-2021-38501"],"references":[{"type":"ADVISORY","url":"https://errata.rockylinux.org/RLSA-2021:3755"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1990342"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2011097"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2011098"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2011099"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2011100"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2011101"}],"affected":[{"package":{"name":"firefox","ecosystem":"Rocky Linux:8","purl":"pkg:rpm/rocky-linux/firefox?distro=rocky-linux-8-4-legacy&epoch=0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:91.2.0-4.el8_4"}],"database_specific":{"yum_repository":"AppStream"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2021:3755.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}],"credits":[{"name":"Rocky Enterprise Software Foundation"},{"name":"Red Hat"}]}