Security Vulnerabilities fixed in kernel-rt RHSA-2021:4646

Description

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fix(es): kernel: Insufficient validation of user-supplied sizes for the MSG_CRYPTO message type (CVE-2021-43267) kernel: timer tree corruption leads to missing wakeup and system freeze (CVE-2021-20317) kernel: Insufficient validation of user-supplied sizes for the MSG_CRYPTO message type (CVE-2021-43267) kernel: timer tree corruption leads to missing wakeup and system freeze (CVE-2021-20317) 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. Bug Fix(es): kernel-rt: update RT source tree to the RHEL-8.5.z source tree (BZ#2020036) SolutionFor details on how to apply this update, which includes the changes described in this advisory, refer to:https://access.redhat.com/articles/11258 The system must be rebooted for this update to take effect.

Affected Applications

kernel-rt

CVE References

CVE-2021-43267 CVE-2021-20317

Other References

https://access.redhat.com/errata/RHSA-2021:4646