RHSA-2021:2718: Important: kernel security and bug fix update

The kernel packages contain the Linux kernel, the core of any Linux operating system.<br>Security Fix(es):<br><li> kernel: sizet-to-int conversion vulnerability in the filesystem layer (CVE-2021-33909)</li> <li> kernel: use-after-free in net/bluetooth/hcievent.c when destroying an hcichan (CVE-2021-33034)</li> <li> kernel: perfeventparseaddrfilter memory (CVE-2020-25704)</li> <li> kernel: security bypass in certs/blacklist.c and certs/systemkeyring.c (CVE-2020-26541)</li> <li> kernel: fork: fix copyprocess(CLONEPARENT) race with the exiting -&gt;realparent (CVE-2020-35508)</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> RHEL8.2 Snapshot2 - tpm: ibmvtpm: Wait for buffer to be set before proceeding (BZ#1933986)</li> <li> fnic crash from invalid request pointer (BZ#1961707)</li> <li> [Azure][RHEL8.4] Two Patches Needed To Enable Azure Host Time-syncing in VMs (BZ#1963051)</li> <li> RHEL kernel 8.2 and higher are affected by data corruption bug in raid1 arrays using bitmaps. (BZ#1969338)</li>