{"id":"RLSA-2021:3447","summary":"Important: kernel security and bug fix update","details":"The kernel packages contain the Linux kernel, the core of any Linux operating system.\n\nSecurity Fix(es):\n\n* kernel: powerpc: KVM guest OS users can cause host OS memory corruption (CVE-2021-37576)\n\n* kernel: slab-out-of-bounds access in xdr_set_page_base() in net/sunrpc/xdr.c (CVE-2021-38201)\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.\n\nBug Fix(es):\n\n* Update Broadcom Emulex lpfc driver for Rocky Linux8.5 with bug fixes (BZ#1948608)\n\n* cyclictest shows \u003e50us latency when guest enters idle (RT guest with 18 RT vCPUs) (BZ#1981336)\n\n* xfrm: backports from upstream (BZ#1981840)\n\n* A task is stuck waiting for the completion of the vmci_resouce releasing upon the balloon reset. (BZ#1982042)\n\n* [mlx5] backport driver bits of  net: zero-initialize tc skb extension on allocation (BZ#1982220)\n\n* Kernel cannot kill a process doing compaction for hugepage allocation (BZ#1984085)\n\n* Rocky Linux8.4 Nightly[0108] - [P10] [Regression] Kdump failed on Rocky Linux8.4 on SAN disk via flavafish adapter (qla2xxx/HPT/Radix) (BZ#1986156)\n\n* [Rocky Linux8.5] scheduler updates and fixes (BZ#1987296)\n\n* Rocky Linux 8.3 using FCOE via a FastLinQ QL45000 card will not manually scan in LUN from Target_id's over 8 (BZ#1989097)\n\n* fixes for oopses in security mitigation runtime code patching (BZ#1989174)\n\n* act mirred doesn't scrub packets when sending them to ingress (BZ#1992226)\n\n* HPE: Cannot install 8.4 using the DVD presented to the iLO (BZ#1993894)\n\n* NFS client hangs on share listing when server side readdir verifiers are implemented (BZ#1993895)\n\n* SNO: The load is extremely high (~870) when pao is added and a profile is applied. (BZ#1994879)\n\n* timeout value of conntrack entry with TCP ESTABLISHED status is too short (BZ#1995554)\n\n* Increase the default value for flowtable offload timeouts (BZ#1995555)\n\n* ice/iavf driver stop responding (BZ#1997534)\n\n* [FJ8.4 Bug]: [REG] Some files in /proc/sys/user show wrong data (BZ#1998002)","modified":"2026-03-11T05:57:49.647047Z","published":"2021-09-07T17:24:27Z","upstream":["CVE-2021-37576","CVE-2021-38201"],"references":[{"type":"ADVISORY","url":"https://errata.rockylinux.org/RLSA-2021:3447"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1986506"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1992731"}],"affected":[{"package":{"name":"kernel","ecosystem":"Rocky Linux:8","purl":"pkg:rpm/rocky-linux/kernel?distro=rocky-linux-8-4-legacy&epoch=0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:4.18.0-305.17.1.el8_4"}],"database_specific":{"yum_repository":"BaseOS"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2021:3447.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}],"credits":[{"name":"Rocky Enterprise Software Foundation"},{"name":"Red Hat"}]}