A kernel security and bug fix update has been released for Red Hat Enterprise Linux 8.4.

RHSA-2023:1557-01: Important: kernel security and bug fix update

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

Synopsis: Important: kernel security and bug fix update
Advisory ID: RHSA-2023:1557-01
Product: Red Hat Enterprise Linux
Advisory URL:   https://access.redhat.com/errata/RHSA-2023:1557
Issue date: 2023-04-04
CVE Names: CVE-2023-0266 CVE-2023-0461
=====================================================================

1. Summary:

An update for kernel is now available for Red Hat Enterprise Linux 8.4
Extended Update Support.

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.

2. Relevant releases/architectures:

Red Hat CodeReady Linux Builder EUS (v. 8.4) - aarch64, ppc64le, x86_64
Red Hat Enterprise Linux BaseOS EUS (v.8.4) - aarch64, noarch, ppc64le, s390x, x86_64

3. Description:

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

Security Fix(es):

* ALSA: pcm: Move rwsem lock inside snd_ctl_elem_read to prevent UAF
(CVE-2023-0266)

* kernel: net/ulp: use-after-free in listening ULP sockets (CVE-2023-0461)

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):

* RHEL8.4 - s390/kexec: fix ipl report address for kdump (BZ#2166298)

* Windows Server 2019 guest randomly pauses with "KVM: entry failed,
hardware error 0x80000021" (BZ#2166370)

* net/mlx5e: Fix use-after-free when reverting termination table
(BZ#2167642)

* net/ice: OP_SET_RSS_HENA command not supported with in-tree driver
(BZ#2167712)

* Backport Request for locking/rwsem commits (BZ#2170941)

* ipv6 traffic stop when an sriov vf have ipv6 address (BZ#2172552)

4. 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.

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

2163379 - CVE-2023-0266 ALSA: pcm: Move rwsem lock inside snd_ctl_elem_read to prevent UAF
2176192 - CVE-2023-0461 kernel: net/ulp: use-after-free in listening ULP sockets

6. Package List:

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

Source:
kernel-4.18.0-305.86.2.el8_4.src.rpm

aarch64:
bpftool-4.18.0-305.86.2.el8_4.aarch64.rpm
bpftool-debuginfo-4.18.0-305.86.2.el8_4.aarch64.rpm
kernel-4.18.0-305.86.2.el8_4.aarch64.rpm
kernel-core-4.18.0-305.86.2.el8_4.aarch64.rpm
kernel-cross-headers-4.18.0-305.86.2.el8_4.aarch64.rpm
kernel-debug-4.18.0-305.86.2.el8_4.aarch64.rpm
kernel-debug-core-4.18.0-305.86.2.el8_4.aarch64.rpm
kernel-debug-debuginfo-4.18.0-305.86.2.el8_4.aarch64.rpm
kernel-debug-devel-4.18.0-305.86.2.el8_4.aarch64.rpm
kernel-debug-modules-4.18.0-305.86.2.el8_4.aarch64.rpm
kernel-debug-modules-extra-4.18.0-305.86.2.el8_4.aarch64.rpm
kernel-debuginfo-4.18.0-305.86.2.el8_4.aarch64.rpm
kernel-debuginfo-common-aarch64-4.18.0-305.86.2.el8_4.aarch64.rpm
kernel-devel-4.18.0-305.86.2.el8_4.aarch64.rpm
kernel-headers-4.18.0-305.86.2.el8_4.aarch64.rpm
kernel-modules-4.18.0-305.86.2.el8_4.aarch64.rpm
kernel-modules-extra-4.18.0-305.86.2.el8_4.aarch64.rpm
kernel-tools-4.18.0-305.86.2.el8_4.aarch64.rpm
kernel-tools-debuginfo-4.18.0-305.86.2.el8_4.aarch64.rpm
kernel-tools-libs-4.18.0-305.86.2.el8_4.aarch64.rpm
perf-4.18.0-305.86.2.el8_4.aarch64.rpm
perf-debuginfo-4.18.0-305.86.2.el8_4.aarch64.rpm
python3-perf-4.18.0-305.86.2.el8_4.aarch64.rpm
python3-perf-debuginfo-4.18.0-305.86.2.el8_4.aarch64.rpm

noarch:
kernel-abi-stablelists-4.18.0-305.86.2.el8_4.noarch.rpm
kernel-doc-4.18.0-305.86.2.el8_4.noarch.rpm

ppc64le:
bpftool-4.18.0-305.86.2.el8_4.ppc64le.rpm
bpftool-debuginfo-4.18.0-305.86.2.el8_4.ppc64le.rpm
kernel-4.18.0-305.86.2.el8_4.ppc64le.rpm
kernel-core-4.18.0-305.86.2.el8_4.ppc64le.rpm
kernel-cross-headers-4.18.0-305.86.2.el8_4.ppc64le.rpm
kernel-debug-4.18.0-305.86.2.el8_4.ppc64le.rpm
kernel-debug-core-4.18.0-305.86.2.el8_4.ppc64le.rpm
kernel-debug-debuginfo-4.18.0-305.86.2.el8_4.ppc64le.rpm
kernel-debug-devel-4.18.0-305.86.2.el8_4.ppc64le.rpm
kernel-debug-modules-4.18.0-305.86.2.el8_4.ppc64le.rpm
kernel-debug-modules-extra-4.18.0-305.86.2.el8_4.ppc64le.rpm
kernel-debuginfo-4.18.0-305.86.2.el8_4.ppc64le.rpm
kernel-debuginfo-common-ppc64le-4.18.0-305.86.2.el8_4.ppc64le.rpm
kernel-devel-4.18.0-305.86.2.el8_4.ppc64le.rpm
kernel-headers-4.18.0-305.86.2.el8_4.ppc64le.rpm
kernel-modules-4.18.0-305.86.2.el8_4.ppc64le.rpm
kernel-modules-extra-4.18.0-305.86.2.el8_4.ppc64le.rpm
kernel-tools-4.18.0-305.86.2.el8_4.ppc64le.rpm
kernel-tools-debuginfo-4.18.0-305.86.2.el8_4.ppc64le.rpm
kernel-tools-libs-4.18.0-305.86.2.el8_4.ppc64le.rpm
perf-4.18.0-305.86.2.el8_4.ppc64le.rpm
perf-debuginfo-4.18.0-305.86.2.el8_4.ppc64le.rpm
python3-perf-4.18.0-305.86.2.el8_4.ppc64le.rpm
python3-perf-debuginfo-4.18.0-305.86.2.el8_4.ppc64le.rpm

s390x:
bpftool-4.18.0-305.86.2.el8_4.s390x.rpm
bpftool-debuginfo-4.18.0-305.86.2.el8_4.s390x.rpm
kernel-4.18.0-305.86.2.el8_4.s390x.rpm
kernel-core-4.18.0-305.86.2.el8_4.s390x.rpm
kernel-cross-headers-4.18.0-305.86.2.el8_4.s390x.rpm
kernel-debug-4.18.0-305.86.2.el8_4.s390x.rpm
kernel-debug-core-4.18.0-305.86.2.el8_4.s390x.rpm
kernel-debug-debuginfo-4.18.0-305.86.2.el8_4.s390x.rpm
kernel-debug-devel-4.18.0-305.86.2.el8_4.s390x.rpm
kernel-debug-modules-4.18.0-305.86.2.el8_4.s390x.rpm
kernel-debug-modules-extra-4.18.0-305.86.2.el8_4.s390x.rpm
kernel-debuginfo-4.18.0-305.86.2.el8_4.s390x.rpm
kernel-debuginfo-common-s390x-4.18.0-305.86.2.el8_4.s390x.rpm
kernel-devel-4.18.0-305.86.2.el8_4.s390x.rpm
kernel-headers-4.18.0-305.86.2.el8_4.s390x.rpm
kernel-modules-4.18.0-305.86.2.el8_4.s390x.rpm
kernel-modules-extra-4.18.0-305.86.2.el8_4.s390x.rpm
kernel-tools-4.18.0-305.86.2.el8_4.s390x.rpm
kernel-tools-debuginfo-4.18.0-305.86.2.el8_4.s390x.rpm
kernel-zfcpdump-4.18.0-305.86.2.el8_4.s390x.rpm
kernel-zfcpdump-core-4.18.0-305.86.2.el8_4.s390x.rpm
kernel-zfcpdump-debuginfo-4.18.0-305.86.2.el8_4.s390x.rpm
kernel-zfcpdump-devel-4.18.0-305.86.2.el8_4.s390x.rpm
kernel-zfcpdump-modules-4.18.0-305.86.2.el8_4.s390x.rpm
kernel-zfcpdump-modules-extra-4.18.0-305.86.2.el8_4.s390x.rpm
perf-4.18.0-305.86.2.el8_4.s390x.rpm
perf-debuginfo-4.18.0-305.86.2.el8_4.s390x.rpm
python3-perf-4.18.0-305.86.2.el8_4.s390x.rpm
python3-perf-debuginfo-4.18.0-305.86.2.el8_4.s390x.rpm

x86_64:
bpftool-4.18.0-305.86.2.el8_4.x86_64.rpm
bpftool-debuginfo-4.18.0-305.86.2.el8_4.x86_64.rpm
kernel-4.18.0-305.86.2.el8_4.x86_64.rpm
kernel-core-4.18.0-305.86.2.el8_4.x86_64.rpm
kernel-cross-headers-4.18.0-305.86.2.el8_4.x86_64.rpm
kernel-debug-4.18.0-305.86.2.el8_4.x86_64.rpm
kernel-debug-core-4.18.0-305.86.2.el8_4.x86_64.rpm
kernel-debug-debuginfo-4.18.0-305.86.2.el8_4.x86_64.rpm
kernel-debug-devel-4.18.0-305.86.2.el8_4.x86_64.rpm
kernel-debug-modules-4.18.0-305.86.2.el8_4.x86_64.rpm
kernel-debug-modules-extra-4.18.0-305.86.2.el8_4.x86_64.rpm
kernel-debuginfo-4.18.0-305.86.2.el8_4.x86_64.rpm
kernel-debuginfo-common-x86_64-4.18.0-305.86.2.el8_4.x86_64.rpm
kernel-devel-4.18.0-305.86.2.el8_4.x86_64.rpm
kernel-headers-4.18.0-305.86.2.el8_4.x86_64.rpm
kernel-modules-4.18.0-305.86.2.el8_4.x86_64.rpm
kernel-modules-extra-4.18.0-305.86.2.el8_4.x86_64.rpm
kernel-tools-4.18.0-305.86.2.el8_4.x86_64.rpm
kernel-tools-debuginfo-4.18.0-305.86.2.el8_4.x86_64.rpm
kernel-tools-libs-4.18.0-305.86.2.el8_4.x86_64.rpm
perf-4.18.0-305.86.2.el8_4.x86_64.rpm
perf-debuginfo-4.18.0-305.86.2.el8_4.x86_64.rpm
python3-perf-4.18.0-305.86.2.el8_4.x86_64.rpm
python3-perf-debuginfo-4.18.0-305.86.2.el8_4.x86_64.rpm

Red Hat CodeReady Linux Builder EUS (v. 8.4):

aarch64:
bpftool-debuginfo-4.18.0-305.86.2.el8_4.aarch64.rpm
kernel-debug-debuginfo-4.18.0-305.86.2.el8_4.aarch64.rpm
kernel-debuginfo-4.18.0-305.86.2.el8_4.aarch64.rpm
kernel-debuginfo-common-aarch64-4.18.0-305.86.2.el8_4.aarch64.rpm
kernel-tools-debuginfo-4.18.0-305.86.2.el8_4.aarch64.rpm
kernel-tools-libs-devel-4.18.0-305.86.2.el8_4.aarch64.rpm
perf-debuginfo-4.18.0-305.86.2.el8_4.aarch64.rpm
python3-perf-debuginfo-4.18.0-305.86.2.el8_4.aarch64.rpm

ppc64le:
bpftool-debuginfo-4.18.0-305.86.2.el8_4.ppc64le.rpm
kernel-debug-debuginfo-4.18.0-305.86.2.el8_4.ppc64le.rpm
kernel-debuginfo-4.18.0-305.86.2.el8_4.ppc64le.rpm
kernel-debuginfo-common-ppc64le-4.18.0-305.86.2.el8_4.ppc64le.rpm
kernel-tools-debuginfo-4.18.0-305.86.2.el8_4.ppc64le.rpm
kernel-tools-libs-devel-4.18.0-305.86.2.el8_4.ppc64le.rpm
perf-debuginfo-4.18.0-305.86.2.el8_4.ppc64le.rpm
python3-perf-debuginfo-4.18.0-305.86.2.el8_4.ppc64le.rpm

x86_64:
bpftool-debuginfo-4.18.0-305.86.2.el8_4.x86_64.rpm
kernel-debug-debuginfo-4.18.0-305.86.2.el8_4.x86_64.rpm
kernel-debuginfo-4.18.0-305.86.2.el8_4.x86_64.rpm
kernel-debuginfo-common-x86_64-4.18.0-305.86.2.el8_4.x86_64.rpm
kernel-tools-debuginfo-4.18.0-305.86.2.el8_4.x86_64.rpm
kernel-tools-libs-devel-4.18.0-305.86.2.el8_4.x86_64.rpm
perf-debuginfo-4.18.0-305.86.2.el8_4.x86_64.rpm
python3-perf-debuginfo-4.18.0-305.86.2.el8_4.x86_64.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/

7. References:

  https://access.redhat.com/security/cve/CVE-2023-0266
  https://access.redhat.com/security/cve/CVE-2023-0461
  https://access.redhat.com/security/updates/classification/#important

8. Contact:

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

Copyright 2023 Red Hat, Inc.