RHSA-2021:3523: 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: Use after free via PI futex state (CVE-2021-3347)</li> <li> kernel: out-of-bounds write in xtcompattargetfromuser() in net/netfilter/xtables.c (CVE-2021-22555)</li> <li> kernel: race condition for removal of the HCI controller (CVE-2021-32399)</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 are the security issues addressed in RHSA-2021:3523?
RHSA-2021:3523 addresses a use-after-free vulnerability via PI futex state (CVE-2021-3347) and an out-of-bounds write in xt_compat_target.
What is the severity of RHSA-2021:3523?
RHSA-2021:3523 has been classified as a critical severity vulnerability.
How do I fix RHSA-2021:3523?
To fix RHSA-2021:3523, you should update the kpatch-patch package to one of the remedied versions listed in the advisory.
Can RHSA-2021:3523 affect my kernel's stability and security?
Yes, vulnerabilities in RHSA-2021:3523 can significantly compromise your kernel's stability and security.
Which versions of kpatch-patch are affected by RHSA-2021:3523?
RHSA-2021:3523 affects multiple versions of the kpatch-patch package, including those prior to 3_10_0-1062_52_2-1-1.el7.