RHSA-2021:3363: Important: kernel security, bug fix, and enhancement update

First published: Tue Aug 31 2021(Updated: )

The kernel packages contain the Linux kernel, the core of any Linux operating system.<br>Security Fix(es):<br><li> kernel: race condition in net/can/bcm.c leads to local privilege escalation (CVE-2021-3609)</li> <li> kernel: Improper handling of VM_IO|VM_PFNMAP vmas in KVM can bypass RO checks (CVE-2021-22543)</li> <li> kernel: out-of-bounds write in xt_compat_target_from_user() in net/netfilter/x_tables.c (CVE-2021-22555)</li> <li> kernel: race condition for removal of the HCI controller (CVE-2021-32399)</li> For 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.<br>Bug Fix(es):<br><li> [Regression] RHEL8.2 - ISST-LTE:pVM:diapvmlp83:sum:memory DLPAR fails to add memory on multiple trials[mm/memory_hotplug.c:1163] (mm-) (BZ#1930169)</li> <li> Every server is displaying the same power levels for all of our i40e 25G interfaces. 10G interfaces seem to be correct. Ethtool version is 5.0 (BZ#1967100)</li> <li> s390/uv: Fix handling of length extensions (BZ#1975657)</li> <li> RHEL 8.3 using FCOE via a FastLinQ QL45000 card will not manually scan in LUN from Target_id's over 8 (BZ#1976265)</li> <li> Backport "tick/nohz: Conditionally restart tick on idle exit" to RHEL 8.5 (BZ#1978711)</li> <li> rhel8.3: phase 2 netfilter backports from upstream (BZ#1980323)</li> <li> xfrm: backports from upstream (BZ#1981841)</li> Enhancement(s):<br><li> [8.2.z] Incorrect parsing of ACPI HMAT table reports incorrect kernel WARNING taint (BZ#1943702)</li> <li> Only selected patches from [IBM 8.4 FEAT] ibmvnic: Backport FW950 and assorted bug fixes (BZ#1980795)</li>

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