RHSA-2021:1070: Important: kernel-rt security and bug fix update

First published: Tue Apr 06 2021(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: out-of-bounds read in libiscsi module (CVE-2021-27364)</li> <li> kernel: heap buffer overflow in the iSCSI subsystem (CVE-2021-27365)</li> <li> kernel: iscsi: unrestricted access to sessions and handles (CVE-2021-27363)</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> RHEL7.9 Realtime crashes due to a blocked task detection. The blocked task is stuck in unregister_shrinker() where multiple tasks have taken the shrinker_rwsem and are fighting on a dentry's d_lockref lock rt_mutex. [kernel-rt] (BZ#1935557)</li> <li> kernel-rt: update to the latest RHEL7.9.z5 source tree (BZ#1939220)</li>

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