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RHSA-2023:3278: Red Hat Security Advisory: kpatch-patch security update

An update for kpatch-patch is now available for Red Hat Enterprise Linux 7.7 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-2022-3564: A use-after-free flaw was found in the Linux kernel’s L2CAP bluetooth functionality in how a user triggers a race condition by two malicious flows in the L2CAP bluetooth packets. This flaw allows a local or bluetooth connection user to crash the system or potentially escalate privileges.
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Issued:

2023-05-23

Updated:

2023-05-23

RHSA-2023:3278 - 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 7.7 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 caused by l2cap_reassemble_sdu() in net/bluetooth/l2cap_core.c (CVE-2022-3564)

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 Server - AUS 7.7 x86_64
  • Red Hat Enterprise Linux Server - TUS 7.7 x86_64
  • Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 7.7 ppc64le
  • Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 7.7 x86_64

Fixes

  • BZ - 2150999 - CVE-2022-3564 kernel: use-after-free caused by l2cap_reassemble_sdu() in net/bluetooth/l2cap_core.c

Red Hat Enterprise Linux Server - AUS 7.7

SRPM

kpatch-patch-3_10_0-1062_71_1-1-1.el7.src.rpm

SHA-256: 7892fa03126cfdc6c6d89421a8a952143cfc191dd01c16c210ca7c3cadd94a8a

x86_64

kpatch-patch-3_10_0-1062_71_1-1-1.el7.x86_64.rpm

SHA-256: a7e5a82ff1d77a433c5bee783abdbb9da32f7a115661d41a99182cfa259a887f

kpatch-patch-3_10_0-1062_71_1-debuginfo-1-1.el7.x86_64.rpm

SHA-256: 7526f6175bc6399917ad02a461f7f872b775b72fb6922ee0e51f48fb50a44419

Red Hat Enterprise Linux Server - TUS 7.7

SRPM

kpatch-patch-3_10_0-1062_71_1-1-1.el7.src.rpm

SHA-256: 7892fa03126cfdc6c6d89421a8a952143cfc191dd01c16c210ca7c3cadd94a8a

x86_64

kpatch-patch-3_10_0-1062_71_1-1-1.el7.x86_64.rpm

SHA-256: a7e5a82ff1d77a433c5bee783abdbb9da32f7a115661d41a99182cfa259a887f

kpatch-patch-3_10_0-1062_71_1-debuginfo-1-1.el7.x86_64.rpm

SHA-256: 7526f6175bc6399917ad02a461f7f872b775b72fb6922ee0e51f48fb50a44419

Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 7.7

SRPM

kpatch-patch-3_10_0-1062_71_1-1-1.el7.src.rpm

SHA-256: 7892fa03126cfdc6c6d89421a8a952143cfc191dd01c16c210ca7c3cadd94a8a

ppc64le

kpatch-patch-3_10_0-1062_71_1-1-1.el7.ppc64le.rpm

SHA-256: 84b3cc5200c4e07db2597aa3ef22c1a043b2c6fb7dd36cc8879f68c197f545ab

kpatch-patch-3_10_0-1062_71_1-debuginfo-1-1.el7.ppc64le.rpm

SHA-256: 3956091a26026b741730dd741d7a8fd5a18dbe43cf25c29b8439d81d5e2e2b14

Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 7.7

SRPM

kpatch-patch-3_10_0-1062_71_1-1-1.el7.src.rpm

SHA-256: 7892fa03126cfdc6c6d89421a8a952143cfc191dd01c16c210ca7c3cadd94a8a

x86_64

kpatch-patch-3_10_0-1062_71_1-1-1.el7.x86_64.rpm

SHA-256: a7e5a82ff1d77a433c5bee783abdbb9da32f7a115661d41a99182cfa259a887f

kpatch-patch-3_10_0-1062_71_1-debuginfo-1-1.el7.x86_64.rpm

SHA-256: 7526f6175bc6399917ad02a461f7f872b775b72fb6922ee0e51f48fb50a44419

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

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CVE-2022-3564

A vulnerability classified as critical was found in Linux Kernel. Affected by this vulnerability is the function l2cap_reassemble_sdu of the file net/bluetooth/l2cap_core.c of the component Bluetooth. The manipulation leads to use after free. It is recommended to apply a patch to fix this issue. The associated identifier of this vulnerability is VDB-211087.