RHSA-2022:0187: Important: kernel-rt security and bug fix update

First published: Wed Jan 19 2022(Updated: )

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: local privilege escalation by exploiting the fsconfig syscall parameter leads to container breakout (CVE-2021-4154)</li> <li> kernel: xfs: raw block device data leak in XFS_IOC_ALLOCSP IOCTL (CVE-2021-4155)</li> <li> kernel: fs_context: heap overflow in legacy parameter handling (CVE-2022-0185)</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> kernnel-rt-debug: do not call blocking ops when !TASK_RUNNING; state=1 set at [&lt;0000000050e86018&gt;] handle_userfault+0x530/0x1820 (BZ#2029421)</li> <li> kernel-rt: update RT source tree to the RHEL-8.4.z6 source tree (BZ#2029592)</li>

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