{"id":"RLSA-2021:4647","summary":"Important: kernel security update","details":"The kernel packages contain the Linux kernel, the core of any Linux operating system.\n\nSecurity Fix(es):\n\n* kernel: Insufficient validation of user-supplied sizes for the MSG_CRYPTO message type (CVE-2021-43267)\n\n* kernel: timer tree corruption leads to missing wakeup and system freeze (CVE-2021-20317)\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":"2026-03-11T06:01:19.605881Z","published":"2021-11-15T09:57:15Z","upstream":["CVE-2021-20317","CVE-2021-43267"],"references":[{"type":"ADVISORY","url":"https://errata.rockylinux.org/RLSA-2021:4647"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2005258"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2020362"}],"affected":[{"package":{"name":"kernel","ecosystem":"Rocky Linux:8","purl":"pkg:rpm/rocky-linux/kernel?distro=rocky-linux-8-5-legacy&epoch=0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:4.18.0-348.2.1.el8_5"}],"database_specific":{"yum_repository":"BaseOS"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2021:4647.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}],"credits":[{"name":"Rocky Enterprise Software Foundation"},{"name":"Red Hat"}]}