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Red Hat Security Advisory 2023-3461-01

Red Hat Security Advisory 2023-3461-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include a use-after-free vulnerability.

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=====================================================================
Red Hat Security Advisory

Synopsis: Important: kernel security and bug fix update
Advisory ID: RHSA-2023:3461-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2023:3461
Issue date: 2023-06-06
CVE Names: CVE-2022-42896
=====================================================================

Summary:

An update for kernel is now available for Red Hat Enterprise Linux 8.4
Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.4
Telecommunications Update Service, and Red Hat Enterprise Linux 8.4 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.

Relevant releases/architectures:

Red Hat Enterprise Linux BaseOS AUS (v.8.4) - aarch64, noarch, ppc64le, s390x, x86_64
Red Hat Enterprise Linux BaseOS E4S (v.8.4) - aarch64, noarch, ppc64le, s390x, x86_64
Red Hat Enterprise Linux BaseOS TUS (v.8.4) - aarch64, noarch, ppc64le, s390x, x86_64

Description:

The kernel packages contain the Linux kernel, the core of any Linux
operating system.

Security Fix(es):

kernel: use-after-free in l2cap_connect and l2cap_le_connect_req in
net/bluetooth/l2cap_core.c (CVE-2022-42896)

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):

Ethernet Port Configuration Tool (EPCT) not supported with in-tree ice
driver (BZ#2176867)
Proactively Backport MM fixes for el8.5 - 2nd round (BZ#2188306)
kernel[-rt]: task deadline_test:2526 blocked for more than 600 seconds.
(BZ#2188626)
Dying percpu kworkers cause issues on isolated CPUs [rhel-8] (BZ#2189598)

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

The system must be rebooted for this update to take effect.

Bugs fixed (https://bugzilla.redhat.com/):

2147364 - CVE-2022-42896 kernel: use-after-free in l2cap_connect and l2cap_le_connect_req in net/bluetooth/l2cap_core.c

Package List:

Red Hat Enterprise Linux BaseOS AUS (v.8.4):

Source:
kernel-4.18.0-305.91.1.el8_4.src.rpm

aarch64:
bpftool-4.18.0-305.91.1.el8_4.aarch64.rpm
bpftool-debuginfo-4.18.0-305.91.1.el8_4.aarch64.rpm
kernel-4.18.0-305.91.1.el8_4.aarch64.rpm
kernel-core-4.18.0-305.91.1.el8_4.aarch64.rpm
kernel-cross-headers-4.18.0-305.91.1.el8_4.aarch64.rpm
kernel-debug-4.18.0-305.91.1.el8_4.aarch64.rpm
kernel-debug-core-4.18.0-305.91.1.el8_4.aarch64.rpm
kernel-debug-debuginfo-4.18.0-305.91.1.el8_4.aarch64.rpm
kernel-debug-devel-4.18.0-305.91.1.el8_4.aarch64.rpm
kernel-debug-modules-4.18.0-305.91.1.el8_4.aarch64.rpm
kernel-debug-modules-extra-4.18.0-305.91.1.el8_4.aarch64.rpm
kernel-debuginfo-4.18.0-305.91.1.el8_4.aarch64.rpm
kernel-debuginfo-common-aarch64-4.18.0-305.91.1.el8_4.aarch64.rpm
kernel-devel-4.18.0-305.91.1.el8_4.aarch64.rpm
kernel-headers-4.18.0-305.91.1.el8_4.aarch64.rpm
kernel-modules-4.18.0-305.91.1.el8_4.aarch64.rpm
kernel-modules-extra-4.18.0-305.91.1.el8_4.aarch64.rpm
kernel-tools-4.18.0-305.91.1.el8_4.aarch64.rpm
kernel-tools-debuginfo-4.18.0-305.91.1.el8_4.aarch64.rpm
kernel-tools-libs-4.18.0-305.91.1.el8_4.aarch64.rpm
perf-4.18.0-305.91.1.el8_4.aarch64.rpm
perf-debuginfo-4.18.0-305.91.1.el8_4.aarch64.rpm
python3-perf-4.18.0-305.91.1.el8_4.aarch64.rpm
python3-perf-debuginfo-4.18.0-305.91.1.el8_4.aarch64.rpm

noarch:
kernel-abi-stablelists-4.18.0-305.91.1.el8_4.noarch.rpm
kernel-doc-4.18.0-305.91.1.el8_4.noarch.rpm

ppc64le:
bpftool-4.18.0-305.91.1.el8_4.ppc64le.rpm
bpftool-debuginfo-4.18.0-305.91.1.el8_4.ppc64le.rpm
kernel-4.18.0-305.91.1.el8_4.ppc64le.rpm
kernel-core-4.18.0-305.91.1.el8_4.ppc64le.rpm
kernel-cross-headers-4.18.0-305.91.1.el8_4.ppc64le.rpm
kernel-debug-4.18.0-305.91.1.el8_4.ppc64le.rpm
kernel-debug-core-4.18.0-305.91.1.el8_4.ppc64le.rpm
kernel-debug-debuginfo-4.18.0-305.91.1.el8_4.ppc64le.rpm
kernel-debug-devel-4.18.0-305.91.1.el8_4.ppc64le.rpm
kernel-debug-modules-4.18.0-305.91.1.el8_4.ppc64le.rpm
kernel-debug-modules-extra-4.18.0-305.91.1.el8_4.ppc64le.rpm
kernel-debuginfo-4.18.0-305.91.1.el8_4.ppc64le.rpm
kernel-debuginfo-common-ppc64le-4.18.0-305.91.1.el8_4.ppc64le.rpm
kernel-devel-4.18.0-305.91.1.el8_4.ppc64le.rpm
kernel-headers-4.18.0-305.91.1.el8_4.ppc64le.rpm
kernel-modules-4.18.0-305.91.1.el8_4.ppc64le.rpm
kernel-modules-extra-4.18.0-305.91.1.el8_4.ppc64le.rpm
kernel-tools-4.18.0-305.91.1.el8_4.ppc64le.rpm
kernel-tools-debuginfo-4.18.0-305.91.1.el8_4.ppc64le.rpm
kernel-tools-libs-4.18.0-305.91.1.el8_4.ppc64le.rpm
perf-4.18.0-305.91.1.el8_4.ppc64le.rpm
perf-debuginfo-4.18.0-305.91.1.el8_4.ppc64le.rpm
python3-perf-4.18.0-305.91.1.el8_4.ppc64le.rpm
python3-perf-debuginfo-4.18.0-305.91.1.el8_4.ppc64le.rpm

s390x:
bpftool-4.18.0-305.91.1.el8_4.s390x.rpm
bpftool-debuginfo-4.18.0-305.91.1.el8_4.s390x.rpm
kernel-4.18.0-305.91.1.el8_4.s390x.rpm
kernel-core-4.18.0-305.91.1.el8_4.s390x.rpm
kernel-cross-headers-4.18.0-305.91.1.el8_4.s390x.rpm
kernel-debug-4.18.0-305.91.1.el8_4.s390x.rpm
kernel-debug-core-4.18.0-305.91.1.el8_4.s390x.rpm
kernel-debug-debuginfo-4.18.0-305.91.1.el8_4.s390x.rpm
kernel-debug-devel-4.18.0-305.91.1.el8_4.s390x.rpm
kernel-debug-modules-4.18.0-305.91.1.el8_4.s390x.rpm
kernel-debug-modules-extra-4.18.0-305.91.1.el8_4.s390x.rpm
kernel-debuginfo-4.18.0-305.91.1.el8_4.s390x.rpm
kernel-debuginfo-common-s390x-4.18.0-305.91.1.el8_4.s390x.rpm
kernel-devel-4.18.0-305.91.1.el8_4.s390x.rpm
kernel-headers-4.18.0-305.91.1.el8_4.s390x.rpm
kernel-modules-4.18.0-305.91.1.el8_4.s390x.rpm
kernel-modules-extra-4.18.0-305.91.1.el8_4.s390x.rpm
kernel-tools-4.18.0-305.91.1.el8_4.s390x.rpm
kernel-tools-debuginfo-4.18.0-305.91.1.el8_4.s390x.rpm
kernel-zfcpdump-4.18.0-305.91.1.el8_4.s390x.rpm
kernel-zfcpdump-core-4.18.0-305.91.1.el8_4.s390x.rpm
kernel-zfcpdump-debuginfo-4.18.0-305.91.1.el8_4.s390x.rpm
kernel-zfcpdump-devel-4.18.0-305.91.1.el8_4.s390x.rpm
kernel-zfcpdump-modules-4.18.0-305.91.1.el8_4.s390x.rpm
kernel-zfcpdump-modules-extra-4.18.0-305.91.1.el8_4.s390x.rpm
perf-4.18.0-305.91.1.el8_4.s390x.rpm
perf-debuginfo-4.18.0-305.91.1.el8_4.s390x.rpm
python3-perf-4.18.0-305.91.1.el8_4.s390x.rpm
python3-perf-debuginfo-4.18.0-305.91.1.el8_4.s390x.rpm

x86_64:
bpftool-4.18.0-305.91.1.el8_4.x86_64.rpm
bpftool-debuginfo-4.18.0-305.91.1.el8_4.x86_64.rpm
kernel-4.18.0-305.91.1.el8_4.x86_64.rpm
kernel-core-4.18.0-305.91.1.el8_4.x86_64.rpm
kernel-cross-headers-4.18.0-305.91.1.el8_4.x86_64.rpm
kernel-debug-4.18.0-305.91.1.el8_4.x86_64.rpm
kernel-debug-core-4.18.0-305.91.1.el8_4.x86_64.rpm
kernel-debug-debuginfo-4.18.0-305.91.1.el8_4.x86_64.rpm
kernel-debug-devel-4.18.0-305.91.1.el8_4.x86_64.rpm
kernel-debug-modules-4.18.0-305.91.1.el8_4.x86_64.rpm
kernel-debug-modules-extra-4.18.0-305.91.1.el8_4.x86_64.rpm
kernel-debuginfo-4.18.0-305.91.1.el8_4.x86_64.rpm
kernel-debuginfo-common-x86_64-4.18.0-305.91.1.el8_4.x86_64.rpm
kernel-devel-4.18.0-305.91.1.el8_4.x86_64.rpm
kernel-headers-4.18.0-305.91.1.el8_4.x86_64.rpm
kernel-modules-4.18.0-305.91.1.el8_4.x86_64.rpm
kernel-modules-extra-4.18.0-305.91.1.el8_4.x86_64.rpm
kernel-tools-4.18.0-305.91.1.el8_4.x86_64.rpm
kernel-tools-debuginfo-4.18.0-305.91.1.el8_4.x86_64.rpm
kernel-tools-libs-4.18.0-305.91.1.el8_4.x86_64.rpm
perf-4.18.0-305.91.1.el8_4.x86_64.rpm
perf-debuginfo-4.18.0-305.91.1.el8_4.x86_64.rpm
python3-perf-4.18.0-305.91.1.el8_4.x86_64.rpm
python3-perf-debuginfo-4.18.0-305.91.1.el8_4.x86_64.rpm

Red Hat Enterprise Linux BaseOS E4S (v.8.4):

Source:
kernel-4.18.0-305.91.1.el8_4.src.rpm

noarch:
kernel-abi-stablelists-4.18.0-305.91.1.el8_4.noarch.rpm
kernel-doc-4.18.0-305.91.1.el8_4.noarch.rpm

Red Hat Enterprise Linux BaseOS TUS (v.8.4):

Source:
kernel-4.18.0-305.91.1.el8_4.src.rpm

noarch:
kernel-abi-stablelists-4.18.0-305.91.1.el8_4.noarch.rpm
kernel-doc-4.18.0-305.91.1.el8_4.noarch.rpm

These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/

References:

https://access.redhat.com/security/cve/CVE-2022-42896
https://access.redhat.com/security/updates/classification/#important

Contact:

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

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