RHSA-2020:5441: Important: kernel-rt security and bug fix update

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.<br>Security Fix(es):<br><li> kernel: metadata validator in XFS may cause an inode with a valid, user-creatable extended attribute to be flagged as corrupt (CVE-2020-14385)</li> <li> kernel: The flowdissector feature allows device tracking (CVE-2019-18282)</li> <li> kernel: Buffer over-read in cryptoauthencextractkeys() when a payload longer than 4 bytes is not aligned. (CVE-2020-10769)</li> <li> kernel: buffer uses out of index in ext3/4 filesystem (CVE-2020-14314)</li> <li> kernel: umask not applied on filesystem without ACL support (CVE-2020-24394)</li> <li> kernel: TOCTOU mismatch in the NFS client code (CVE-2020-25212)</li> <li> kernel: improper input validation in pppcpparsecr function leads to memory corruption and read overflow (CVE-2020-25643)</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> kernel-rt: update to the latest RHEL7.9.z2 source tree (BZ#1873318)</li> <li> deadlock between handlemmfault() and ptepclearflush() (BZ#1888872)</li>