RHSA-2021:1279: 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.Security Fix(es): kernel: Use after free via PI futex state (CVE-2021-3347) kernel: out-of-bounds read in libiscsi module (CVE-2021-27364) kernel: heap buffer overflow in the iSCSI subsystem (CVE-2021-27365) kernel: iscsi: unrestricted access to sessions and handles (CVE-2021-27363) 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 latest RHEL-8.2.z8 Batch source tree (BZ#1916765)
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of RHSA-2021:1279?
The severity of RHSA-2021:1279 is classified as important due to potential exploitation involving a use-after-free vulnerability.
How do I fix RHSA-2021:1279?
To fix RHSA-2021:1279, upgrade to the kernel-rt package version 4.18.0-193.51.1.rt13.101.el8_2 or later.
What vulnerabilities are addressed in RHSA-2021:1279?
RHSA-2021:1279 addresses a use-after-free vulnerability identified as CVE-2021-3347 and other issues in the kernel.
What software packages are affected by RHSA-2021:1279?
Affected packages include various kernel-rt packages such as kernel-rt, kernel-rt-core, and kernel-rt-debug among others.
Is a reboot required after applying the fix for RHSA-2021:1279?
Yes, a reboot is typically required to fully apply the kernel updates from RHSA-2021:1279.