(RHSA-2022:6983) Important: kernel security, bug fix, and enhancement update

The kernel packages contain the Linux kernel, the core of any Linux operating system.

The following packages have been upgraded to a later upstream version: kernel (4.18.0).

Security Fix(es):

• A use-after-free in cls_route filter implementation may lead to privilege escalation (CVE-2022-2588)

• Information leak in the IPv6 implementation (CVE-2021-45485)

• Information leak in the IPv4 implementation (CVE-2021-45486)

• Incomplete cleanup of multi-core shared buffers (aka SBDR) (CVE-2022-21123)

• Incomplete cleanup of microarchitectural fill buffers (aka SBDS) (CVE-2022-21125)

• Incomplete cleanup in specific special register write operations (aka DRPW) (CVE-2022-21166)

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):

• DR, Ignore modify TTL if ConnectX-5 doesn’t support it (BZ#2075549)

• execve exit tracepoint not called (BZ#2106663)

• Unable to boot RHEL-8.6 on Brazos max. config (Install is success) (BZ#2107475)

• “vmcore failed, _exitcode:139” error observed while capturing vmcore during fadump after memory remove. incomplete vmcore is captured. (BZ#2107490)

• soft lockups under heavy I/O load to ahci connected SSDs (BZ#2110773)

• Allow substituting custom vmlinux.h for the build (BZ#2116407)