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Red Hat: RHSA-2023:3277-01 Important Kernel Update - Use-After-Free

red hat
Calendar Grey May 23, 2023
Dist Redhat Esm H88
A significant system patch has been released for various editions of Red Hat Enterprise Linux, targeting urgent vulnerabilities.
An update for kernel is now available for Red Hat Enterprise Linux 7.7 Advanced Update Support, Red Hat Enterprise Linux 7.7 Telco Extended Update Support, and Red Hat Enterprise L...

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.

Topics%20covered

Topics Covered

security advisory red hat kernel update security fix important system reboot 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. 7.7):
Source: kernel-3.10.0-1062.72.1.el7.src.rpm
noarch: kernel-abi-whitelists-3.10.0-1062.72.1.el7.noarch.rpm kernel-doc-3.10.0-1062.72.1.el7.noarch.rpm
x86_64: bpftool-3.10.0-1062.72.1.el7.x86_64.rpm bpftool-debuginfo-3.10.0-1062.72.1.el7.x86_64.rpm kernel-3.10.0-1062.72.1.el7.x86_64.rpm kernel-debug-3.10.0-1062.72.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-1062.72.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-1062.72.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-1062.72.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-1062.72.1.el7.x86_64.rpm kernel-devel-3.10.0-1062.72.1.el7.x86_64.rpm kernel-headers-3.10.0-1062.72.1.el7.x86_64.rpm kernel-tools-3.10.0-1062.72.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-1062.72.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-1062.72.1.el7.x86_64.rpm perf-3.10.0-1062.72.1.el7.x86_64.rpm perf-debuginfo-3.10.0-1062.72.1.el7.x86_64.rpm python-perf-3.10.0-1062.72.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-1062.72.1.el7.x86_64.rpm
Red Hat Enterprise Linux Server E4S (v. 7.7):
Source: kernel-3.10.0-1062.72.1.el7.src.rpm
noarch: kernel-abi-whitelists-3.10.0-1062.72.1.el7.noarch.rpm kernel-doc-3.10.0-1062.72.1.el7.noarch.rpm
ppc64le: bpftool-3.10.0-1062.72.1.el7.ppc64le.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2023:3277-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2023:3277
Issue date: 2023-05-23

Topic

An update for kernel is now available for Red Hat Enterprise Linux 7.7Advanced Update Support, Red Hat Enterprise Linux 7.7 Telco Extended UpdateSupport, and Red Hat Enterprise Linux 7.7 Update Services for SAPSolutions.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 security fix important system reboot use-after-free

Relevant Releases Architectures

Red Hat Enterprise Linux Server AUS (v. 7.7) - noarch, x86_64

Red Hat Enterprise Linux Server E4S (v. 7.7) - noarch, ppc64le, x86_64

Red Hat Enterprise Linux Server Optional AUS (v. 7.7) - x86_64

Red Hat Enterprise Linux Server Optional E4S (v. 7.7) - ppc64le, x86_64

Red Hat Enterprise Linux Server Optional TUS (v. 7.7) - x86_64

Red Hat Enterprise Linux Server TUS (v. 7.7) - noarch, 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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