RHSA-2021:2731: Important: kpatch-patch security update
This is a kernel live patch module which is automatically loaded by the RPM post-install script to modify the code of a running kernel.<br>Security Fix(es):<br><li> kernel: sizet-to-int conversion vulnerability in the filesystem layer (CVE-2021-33909)</li> <li> kernel: Use after free via PI futex state (CVE-2021-3347)</li> <li> kernel: use-after-free in net/bluetooth/hcievent.c when destroying an hcichan (CVE-2021-33034)</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.
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of RHSA-2021:2731?
The severity of RHSA-2021:2731 is high due to critical vulnerabilities in the kernel that could lead to privilege escalation or system compromise.
How do I fix RHSA-2021:2731?
To fix RHSA-2021:2731, update to the recommended versions of the kpatch-patch package as specified in the advisory.
What vulnerabilities are addressed in RHSA-2021:2731?
RHSA-2021:2731 addresses a size_t-to-int conversion vulnerability and a use-after-free vulnerability in the kernel.
Which systems are affected by RHSA-2021:2731?
RHSA-2021:2731 affects Red Hat Enterprise Linux 7 systems using the specified versions of the kpatch-patch package.
When was RHSA-2021:2731 released?
RHSA-2021:2731 was released on December 7, 2021.