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RHSA-2023:0839: Red Hat Security Advisory: kpatch-patch security update

An update for kpatch-patch is now available for Red Hat Enterprise Linux 8. 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-2022-41222: A use-after-free flaw was found in the Linux kernel’s mm/mremap memory address space accounting source code in how a race condition happens between rmap walk and mremap. This flaw allows a local user to crash or potentially escalate their privileges on the system.
  • CVE-2022-43945: A buffer overflow flaw was found in the Linux kernel nfsd (network file system) subsystem. The way a user sends RPC over TCP with excess data added at the end of the message could allow a remote user to starve the resources, causing a denial of service.
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Issued:

2023-02-21

Updated:

2023-02-21

RHSA-2023:0839 - Security Advisory

  • Overview
  • Updated Packages

Synopsis

Important: kpatch-patch security 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 is now available for Red Hat Enterprise Linux 8.

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: mm/mremap.c use-after-free vulnerability (CVE-2022-41222)
  • kernel: nfsd buffer overflow by RPC message over TCP with garbage data (CVE-2022-43945)

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.

Affected Products

  • Red Hat Enterprise Linux for x86_64 8 x86_64
  • Red Hat Enterprise Linux for Power, little endian 8 ppc64le

Fixes

  • BZ - 2138818 - CVE-2022-41222 kernel: mm/mremap.c use-after-free vulnerability
  • BZ - 2141752 - CVE-2022-43945 kernel: nfsd buffer overflow by RPC message over TCP with garbage data

Red Hat Enterprise Linux for x86_64 8

SRPM

kpatch-patch-4_18_0-425_10_1-1-1.el8_7.src.rpm

SHA-256: f1c23f0e6fde3ffa57bbedd6e323ec1146f02ad6e56c0f1af42001a3a6659cfb

kpatch-patch-4_18_0-425_3_1-1-3.el8.src.rpm

SHA-256: 6a1870522ecc7a9410dad8a1298170da0ee425419ce4cf259cd4109109b2c086

x86_64

kpatch-patch-4_18_0-425_10_1-1-1.el8_7.x86_64.rpm

SHA-256: a324c6b06e37fc65351db76bc5732bca354a097bbe5c9c96cfa63b858f59432e

kpatch-patch-4_18_0-425_10_1-debuginfo-1-1.el8_7.x86_64.rpm

SHA-256: 5e26b7f5eb87eea9647f4aa00b77fd6971330ca6b9a623eebb9586f2abde73f5

kpatch-patch-4_18_0-425_10_1-debugsource-1-1.el8_7.x86_64.rpm

SHA-256: d53a7806d4db566368cffa0f7b88568e0e6335f967fdf8fc03fadd546a444fe5

kpatch-patch-4_18_0-425_3_1-1-3.el8.x86_64.rpm

SHA-256: da3eda09e22ee4abc5ecef5499b5e41308bef00e71a7d823b148e792e671639b

kpatch-patch-4_18_0-425_3_1-debuginfo-1-3.el8.x86_64.rpm

SHA-256: a59fecbe7ea790506f49a30512fe49e04a59d70456d6ee8158d7140867700d49

kpatch-patch-4_18_0-425_3_1-debugsource-1-3.el8.x86_64.rpm

SHA-256: 8c62682970e1c4cf1e0686f04f51a382e1e7aa8afa2b7bce32042b8b08c4e1f3

Red Hat Enterprise Linux for Power, little endian 8

SRPM

kpatch-patch-4_18_0-425_10_1-1-1.el8_7.src.rpm

SHA-256: f1c23f0e6fde3ffa57bbedd6e323ec1146f02ad6e56c0f1af42001a3a6659cfb

kpatch-patch-4_18_0-425_3_1-1-3.el8.src.rpm

SHA-256: 6a1870522ecc7a9410dad8a1298170da0ee425419ce4cf259cd4109109b2c086

ppc64le

kpatch-patch-4_18_0-425_10_1-1-1.el8_7.ppc64le.rpm

SHA-256: e22ac98026bdef91fe0f9e87ce8d93088de4b97827803a18b63924b5654def8d

kpatch-patch-4_18_0-425_10_1-debuginfo-1-1.el8_7.ppc64le.rpm

SHA-256: a7a5e6e3f381bdb24c9afe22658f80c07fbdb7e37ca4ff67b785cda47c36aec1

kpatch-patch-4_18_0-425_10_1-debugsource-1-1.el8_7.ppc64le.rpm

SHA-256: c250835066598c95d3125aecb29f7a6e705701ee4797a866ae3d3ae432207383

kpatch-patch-4_18_0-425_3_1-1-3.el8.ppc64le.rpm

SHA-256: 8feff6edd2133ae8471eb36170bf16e353e9d89a9193f912986dfa6a35be9a67

kpatch-patch-4_18_0-425_3_1-debuginfo-1-3.el8.ppc64le.rpm

SHA-256: 7c9f6de9d90859228dc79cd7fe5628e1a112ad2d24041764284583d8153f3d62

kpatch-patch-4_18_0-425_3_1-debugsource-1-3.el8.ppc64le.rpm

SHA-256: 0f4d7fb02deb79143c71dcad0ec2d6e2faa95b1eab03ae5088aa2a58f396ebb9

The Red Hat security contact is [email protected]. More contact details at https://access.redhat.com/security/team/contact/.

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