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Red Hat Enterprise Linux 7.6: Kernel Important Bug Fix RHSA-2023:4021 CVE-2022-3564

red hat
Calendar Grey July 11, 2023
Dist Redhat Esm H88
Major kernel protection enhancement introduced for Red Hat Enterprise Linux 7.6, tackling critical weaknesses and providing extensive solutions.
An update for kernel is now available for Red Hat Enterprise Linux 7.6 Advanced 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):
* 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.
Bug Fix(es):
* The iscsi target deadlocks when the same host acts as an initiator to itself (i.e. connects via 127.0.0.1) (BZ#2183541)
* Double free issue in filelayout_alloc_commit_info (BZ#2212878)
* RHEL 7.2: XFS inode cluster corruption [rhel-7.9.z] (BZ#2213361)

Topics%20covered

Topics Covered

security advisory security update critical Red Hat Enterprise Linux important kernel fix use-after-free

References

https://access.redhat.com/security/cve/CVE-2022-3564 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux Server AUS (v. 7.6):
Source: kernel-3.10.0-957.104.1.el7.src.rpm
noarch: kernel-abi-whitelists-3.10.0-957.104.1.el7.noarch.rpm kernel-doc-3.10.0-957.104.1.el7.noarch.rpm
x86_64: bpftool-3.10.0-957.104.1.el7.x86_64.rpm kernel-3.10.0-957.104.1.el7.x86_64.rpm kernel-debug-3.10.0-957.104.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-957.104.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-957.104.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-957.104.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-957.104.1.el7.x86_64.rpm kernel-devel-3.10.0-957.104.1.el7.x86_64.rpm kernel-headers-3.10.0-957.104.1.el7.x86_64.rpm kernel-tools-3.10.0-957.104.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-957.104.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-957.104.1.el7.x86_64.rpm perf-3.10.0-957.104.1.el7.x86_64.rpm perf-debuginfo-3.10.0-957.104.1.el7.x86_64.rpm python-perf-3.10.0-957.104.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-957.104.1.el7.x86_64.rpm
Red Hat Enterprise Linux Server Optional AUS (v. 7.6):
x86_64: kernel-debug-debuginfo-3.10.0-957.104.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-957.104.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-957.104.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-957.104.1.el7.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2023:4021-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2023:4021
Issue date: 2023-07-11

Topic

An update for kernel is now available for Red Hat Enterprise Linux 7.6Advanced 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 security update critical Red Hat Enterprise Linux important kernel fix use-after-free

Relevant Releases Architectures

Red Hat Enterprise Linux Server AUS (v. 7.6) - noarch, x86_64

Red Hat Enterprise Linux Server Optional AUS (v. 7.6) - x86_64

Bugs Fixed

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

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