RHSA-2021:3399: Important: kernel security and bug fix update
The kernel packages contain the Linux kernel, the core of any Linux operating system.<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.<br>Bug Fix(es):<br><li> [CKI kernel builds]: x86 binaries in non-x86 kernel rpms breaks systemtap [7.9.z] (BZ#1975163)</li>
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of RHSA-2021:3399?
The severity of RHSA-2021:3399 is classified as high due to the associated vulnerabilities that could be exploited.
How do I fix RHSA-2021:3399?
To fix RHSA-2021:3399, you need to update the affected kernel packages to version 3.10.0-327.100.1.el7 or later.
What vulnerabilities are addressed in RHSA-2021:3399?
RHSA-2021:3399 addresses vulnerabilities such as CVE-2021-3347 and other potential security issues in the Linux kernel.
Which packages are affected by RHSA-2021:3399?
The affected packages include the kernel, kernel-debug, kernel-devel, and several related kernel packages specific to EL7.
Is it necessary to reboot after applying the fix for RHSA-2021:3399?
Yes, it is necessary to reboot the system after applying the kernel updates to ensure that the changes take effect.