RHSA-2022:0958 — Security Advisory

An update for kpatch-patch-4_18_0-147_58_1 is now available for Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

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.

Security Fix(es):

• kernel: Use After Free in unix_gc() which could result in a local privilege escalation (CVE-2021-0920)

• kernel: use-after-free in RDMA listen() (CVE-2021-4028)

• kernel: fget: check that the fd still exists after getting a ref to it (CVE-2021-4083)

• kernel: xfs: raw block device data leak in XFS_IOC_ALLOCSP IOCTL (CVE-2021-4155)

• kernel: possible privileges escalation due to missing TLB flush (CVE-2022-0330)

• kernel: cgroups v1 release_agent feature may allow privilege escalation (CVE-2022-0492)

• kernel: failing usercopy allows for use-after-free exploitation (CVE-2022-22942)

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):

• Several kpatch CVEs needed for kernel-4.18.0-147.58.1.el8_1 (BZ#2064297)