RHSA-2022:1455: Important: kernel security, bug fix, and enhancement update

First published: Wed Apr 20 2022(Updated: )

The kernel packages contain the Linux kernel, the core of any Linux operating system.<br>Security Fix(es):<br><li> kernel: fget: check that the fd still exists after getting a ref to it (CVE-2021-4083)</li> <li> kernel: cgroups v1 release_agent feature may allow privilege escalation (CVE-2022-0492)</li> <li> kernel: heap out of bounds write in nf_dup_netdev.c (CVE-2022-25636)</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 Fixes:<br><li> Power10 PMU fix for PM_CYC/PM_INST_CMPL ( kernel/perf) (BZ#2040665)</li> <li> call traces and packet drops seen after changing mtu of ibmvnic interface. (ibmvnic/ P10/ Everglade) (BZ#2050679)</li> <li> zfcp: fix failed recovery on gone remote port, non-NPIV FCP dev (BZ#2050739)</li> <li> overlay mount fails with ELOOP (Too many levels of symbolic links) (BZ#2053030)</li> <li> Host unable to automatically add namespaces belonging to a new ANA group (BZ#2055466)</li> <li> scheduler updates and fixes [None8.4.0.z] (BZ#2056834)</li> <li> nf_reinject calls nf_queue_entry_free on an already freed entry-&gt;state (BZ#2061445)</li> <li> First Packet Latency impacted by mlx5 warning msg (BZ#2067992)</li> <li> openvswitch connection tracking sends incorrect flow key for some upcalls (BZ#2068477)</li> <li> Backport upstream rcu commits up to v5.10 (BZ#2069819)</li> <li> Packages have been upgraded to a later upstream version: kernel (4.18.0) (BZ#2036932)</li> Enhancement:<br><li> zcrypt DD: Toleration for new IBM Z Crypto Hardware (BZ#2054097)</li>

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