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Red Hat 8.4: RHSA-2023:1557-01 Important: Kernel Update and Fixes

red hat
Calendar Grey April 4, 2023
Dist Redhat Esm H88
Keep informed about the latest Red Hat kernel notifications regarding critical updates and security improvements. Safeguard your system's integrity!
An update for kernel is now available for Red Hat Enterprise Linux 8.4 Extended Update Support

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.

Summary

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)

Topics%20covered

Topics Covered

security advisory Red Hat kernel update bug fix important security impact use-after-free

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

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

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

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

Topic

An update for kernel is now available for Red Hat Enterprise Linux 8.4Extended Update Support.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory Red Hat kernel update bug fix important security impact use-after-free

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

Bugs Fixed

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

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