Home / mailings [RHSA-2023:4021-01] Important: kernel security and bug fix update
Posted on 11 July 2023
RedHat===================================================================== Red Hat Security Advisory
Synopsis: Important: kernel security and bug fix update
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
CVE Names: CVE-2022-3564
=====================================================================
1. Summary:
An update for kernel is now available for Red Hat Enterprise Linux 7.6
Advanced 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 Enterprise Linux Server AUS (v. 7.6) - noarch, x86_64
Red Hat Enterprise Linux Server Optional AUS (v. 7.6) - x86_64
3. Description:
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)
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/):
2150999 - CVE-2022-3564 kernel: use-after-free caused by l2cap_reassemble_sdu() in net/bluetooth/l2cap_core.c
6. 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
kernel-tools-libs-devel-3.10.0-957.104.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-957.104.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-957.104.1.el7.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-2022-3564
https://access.redhat.com/security/updates/classification/#important
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2023 Red Hat, Inc.
