Headline

RHSA-2022:0958: Red Hat Security Advisory: kpatch-patch-4_18_0-147_58_1 security and bug fix update

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 content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.

Related CVEs:

CVE-2021-0920: kernel: Use After Free in unix_gc() which could result in a local privilege escalation
CVE-2021-4028: kernel: use-after-free in RDMA listen()
CVE-2021-4083: kernel: fget: check that the fd still exists after getting a ref to it
CVE-2021-4155: kernel: xfs: raw block device data leak in XFS_IOC_ALLOCSP IOCTL
CVE-2022-0330: kernel: possible privileges escalation due to missing TLB flush
CVE-2022-0492: kernel: cgroups v1 release_agent feature may allow privilege escalation
CVE-2022-22942: kernel: failing usercopy allows for use-after-free exploitation

3 years ago

Red Hat Security Data

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Issued:

2022-03-17

Updated:

2022-03-17

RHSA-2022:0958 - Security Advisory

Overview
Updated Packages

Synopsis

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

Type/Severity

Security Advisory: Important

Red Hat Insights patch analysis

Identify and remediate systems affected by this advisory.

View affected systems

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)

Affected Products

Red Hat Enterprise Linux Server (for IBM Power LE) - Update Services for SAP Solutions 8.1 ppc64le
Red Hat Enterprise Linux Server - Update Services for SAP Solutions 8.1 x86_64

Fixes

BZ - 2027201 - CVE-2021-4028 kernel: use-after-free in RDMA listen()
BZ - 2029923 - CVE-2021-4083 kernel: fget: check that the fd still exists after getting a ref to it
BZ - 2031930 - CVE-2021-0920 kernel: Use After Free in unix_gc() which could result in a local privilege escalation
BZ - 2034813 - CVE-2021-4155 kernel: xfs: raw block device data leak in XFS_IOC_ALLOCSP IOCTL
BZ - 2042404 - CVE-2022-0330 kernel: possible privileges escalation due to missing TLB flush
BZ - 2044809 - CVE-2022-22942 kernel: failing usercopy allows for use-after-free exploitation
BZ - 2051505 - CVE-2022-0492 kernel: cgroups v1 release_agent feature may allow privilege escalation

CVEs