Issued:
2022-03-17
Updated:
2022-03-17

RHSA-2022:0958 - Important: kpatch-patch-4_18_0-147_58_1 security and bug fix update

Synopsis

Important: kpatch-patch-4_18_0-147_58_1 security and bug fix update

Type/Severity

Security Advisory Important

Topic

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.

Description

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)

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

ProductVersionArch
Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions8.1x86_64
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions8.1ppc64le

Updated Packages

  • kpatch-patch-4_18_0-147_58_1-1-1.el8_1.ppc64le.rpm
  • kpatch-patch-4_18_0-147_58_1-debugsource-1-1.el8_1.ppc64le.rpm
  • kpatch-patch-4_18_0-147_58_1-debugsource-1-1.el8_1.x86_64.rpm
  • kpatch-patch-4_18_0-147_58_1-1-1.el8_1.src.rpm
  • kpatch-patch-4_18_0-147_58_1-1-1.el8_1.x86_64.rpm
  • kpatch-patch-4_18_0-147_58_1-debuginfo-1-1.el8_1.ppc64le.rpm
  • kpatch-patch-4_18_0-147_58_1-debuginfo-1-1.el8_1.x86_64.rpm

Fixes

CVEs

References

Additional information