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             AUSCERT External Security Bulletin Redistribution

                               ESB-2023.5847
      [RHSA-2023:5589] Important: kernel security and bug fix update
                              11 October 2023

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           kernel
Publisher:         Red Hat
Operating System:  Red Hat
Resolution:        Patch/Upgrade
CVE Names:         CVE-2023-4128 CVE-2022-42896 

Original Bulletin: 
   https://access.redhat.com/errata/RHSA-2023:5589

Comment: CVSS (Max):  8.1 CVE-2022-42896 (CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N)
         CVSS Source: Red Hat
         Calculator:  https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

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

Synopsis:          Important: kernel security and bug fix update
Advisory ID:       RHSA-2023:5589
Product:           Red Hat Enterprise Linux BaseOS AUS (v. 8.2)
Advisory URL:      https://access.redhat.com/errata/RHSA-2023:5589
Issue date:        2023-10-10
CVE Names:         CVE-2022-42896 CVE-2023-4128
=====================================================================

1. Summary:

An update for kernel is now available for Red Hat Enterprise Linux 8.2 Advanced
Update Support, Red Hat Enterprise Linux 8.2 Telecommunications Update Service,
and Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions.

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 BaseOS AUS (v. 8.2) - x86_64, noarch, ppc64le 
Red Hat Enterprise Linux BaseOS E4S (v. 8.2) - x86_64, noarch, ppc64le 
Red Hat Enterprise Linux BaseOS TUS (v. 8.2) - x86_64, noarch, ppc64le 

3. Description:

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

Security Fix(es):

* kernel: use-after-free in l2cap_connect and l2cap_le_connect_req in
net/bluetooth/l2cap_core.c (CVE-2022-42896)

* kernel: net/sched: Use-after-free vulnerabilities in the net/sched
classifiers: cls_fw, cls_u32 and cls_route (CVE-2023-4128)

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):

* Z-Stream request for "double free issue in filelayout_alloc_commit_info"
(BZ#2212823)

* Hyper-V RHEL-8: Fix VM crash/hang Issues due to fast VF add/remove events
(BZ#2227262)

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/):

2147364 - CVE-2022-42896 - use-after-free in l2cap_connect and
l2cap_le_connect_req in net/bluetooth/l2cap_core.c
2225511 - CVE-2023-4128 - cls_fw, cls_u32 and cls_route 

6. Package List:

Red Hat Enterprise Linux BaseOS AUS (v. 8.2)

x86_64:
bpftool-0:4.18.0-193.116.1.el8_2.x86_64.rpm
bpftool-debuginfo-0:4.18.0-193.116.1.el8_2.x86_64.rpm
kernel-0:4.18.0-193.116.1.el8_2.x86_64.rpm
kernel-core-0:4.18.0-193.116.1.el8_2.x86_64.rpm
kernel-cross-headers-0:4.18.0-193.116.1.el8_2.x86_64.rpm
kernel-debug-0:4.18.0-193.116.1.el8_2.x86_64.rpm
kernel-debug-core-0:4.18.0-193.116.1.el8_2.x86_64.rpm
kernel-debug-debuginfo-0:4.18.0-193.116.1.el8_2.x86_64.rpm
kernel-debug-devel-0:4.18.0-193.116.1.el8_2.x86_64.rpm
kernel-debug-modules-0:4.18.0-193.116.1.el8_2.x86_64.rpm
kernel-debug-modules-extra-0:4.18.0-193.116.1.el8_2.x86_64.rpm
kernel-debuginfo-0:4.18.0-193.116.1.el8_2.x86_64.rpm
kernel-debuginfo-common-x86_64-0:4.18.0-193.116.1.el8_2.x86_64.rpm
kernel-devel-0:4.18.0-193.116.1.el8_2.x86_64.rpm
kernel-modules-0:4.18.0-193.116.1.el8_2.x86_64.rpm
kernel-modules-extra-0:4.18.0-193.116.1.el8_2.x86_64.rpm
kernel-tools-0:4.18.0-193.116.1.el8_2.x86_64.rpm
kernel-tools-debuginfo-0:4.18.0-193.116.1.el8_2.x86_64.rpm
kernel-tools-libs-0:4.18.0-193.116.1.el8_2.x86_64.rpm
perf-0:4.18.0-193.116.1.el8_2.x86_64.rpm
perf-debuginfo-0:4.18.0-193.116.1.el8_2.x86_64.rpm
python3-perf-0:4.18.0-193.116.1.el8_2.x86_64.rpm
python3-perf-debuginfo-0:4.18.0-193.116.1.el8_2.x86_64.rpm
kernel-headers-0:4.18.0-193.116.1.el8_2.x86_64.rpm

Source:
kernel-0:4.18.0-193.116.1.el8_2.src.rpm

noarch:
kernel-abi-whitelists-0:4.18.0-193.116.1.el8_2.noarch.rpm
kernel-doc-0:4.18.0-193.116.1.el8_2.noarch.rpm

Red Hat Enterprise Linux BaseOS E4S (v. 8.2)

ppc64le:
bpftool-0:4.18.0-193.116.1.el8_2.ppc64le.rpm
bpftool-debuginfo-0:4.18.0-193.116.1.el8_2.ppc64le.rpm
kernel-0:4.18.0-193.116.1.el8_2.ppc64le.rpm
kernel-core-0:4.18.0-193.116.1.el8_2.ppc64le.rpm
kernel-cross-headers-0:4.18.0-193.116.1.el8_2.ppc64le.rpm
kernel-debug-0:4.18.0-193.116.1.el8_2.ppc64le.rpm
kernel-debug-core-0:4.18.0-193.116.1.el8_2.ppc64le.rpm
kernel-debug-debuginfo-0:4.18.0-193.116.1.el8_2.ppc64le.rpm
kernel-debug-devel-0:4.18.0-193.116.1.el8_2.ppc64le.rpm
kernel-debug-modules-0:4.18.0-193.116.1.el8_2.ppc64le.rpm
kernel-debug-modules-extra-0:4.18.0-193.116.1.el8_2.ppc64le.rpm
kernel-debuginfo-0:4.18.0-193.116.1.el8_2.ppc64le.rpm
kernel-debuginfo-common-ppc64le-0:4.18.0-193.116.1.el8_2.ppc64le.rpm
kernel-devel-0:4.18.0-193.116.1.el8_2.ppc64le.rpm
kernel-modules-0:4.18.0-193.116.1.el8_2.ppc64le.rpm
kernel-modules-extra-0:4.18.0-193.116.1.el8_2.ppc64le.rpm
kernel-tools-0:4.18.0-193.116.1.el8_2.ppc64le.rpm
kernel-tools-debuginfo-0:4.18.0-193.116.1.el8_2.ppc64le.rpm
kernel-tools-libs-0:4.18.0-193.116.1.el8_2.ppc64le.rpm
perf-0:4.18.0-193.116.1.el8_2.ppc64le.rpm
perf-debuginfo-0:4.18.0-193.116.1.el8_2.ppc64le.rpm
python3-perf-0:4.18.0-193.116.1.el8_2.ppc64le.rpm
python3-perf-debuginfo-0:4.18.0-193.116.1.el8_2.ppc64le.rpm
kernel-headers-0:4.18.0-193.116.1.el8_2.ppc64le.rpm

x86_64:
bpftool-0:4.18.0-193.116.1.el8_2.x86_64.rpm
bpftool-debuginfo-0:4.18.0-193.116.1.el8_2.x86_64.rpm
kernel-0:4.18.0-193.116.1.el8_2.x86_64.rpm
kernel-core-0:4.18.0-193.116.1.el8_2.x86_64.rpm
kernel-cross-headers-0:4.18.0-193.116.1.el8_2.x86_64.rpm
kernel-debug-0:4.18.0-193.116.1.el8_2.x86_64.rpm
kernel-debug-core-0:4.18.0-193.116.1.el8_2.x86_64.rpm
kernel-debug-debuginfo-0:4.18.0-193.116.1.el8_2.x86_64.rpm
kernel-debug-devel-0:4.18.0-193.116.1.el8_2.x86_64.rpm
kernel-debug-modules-0:4.18.0-193.116.1.el8_2.x86_64.rpm
kernel-debug-modules-extra-0:4.18.0-193.116.1.el8_2.x86_64.rpm
kernel-debuginfo-0:4.18.0-193.116.1.el8_2.x86_64.rpm
kernel-debuginfo-common-x86_64-0:4.18.0-193.116.1.el8_2.x86_64.rpm
kernel-devel-0:4.18.0-193.116.1.el8_2.x86_64.rpm
kernel-modules-0:4.18.0-193.116.1.el8_2.x86_64.rpm
kernel-modules-extra-0:4.18.0-193.116.1.el8_2.x86_64.rpm
kernel-tools-0:4.18.0-193.116.1.el8_2.x86_64.rpm
kernel-tools-debuginfo-0:4.18.0-193.116.1.el8_2.x86_64.rpm
kernel-tools-libs-0:4.18.0-193.116.1.el8_2.x86_64.rpm
perf-0:4.18.0-193.116.1.el8_2.x86_64.rpm
perf-debuginfo-0:4.18.0-193.116.1.el8_2.x86_64.rpm
python3-perf-0:4.18.0-193.116.1.el8_2.x86_64.rpm
python3-perf-debuginfo-0:4.18.0-193.116.1.el8_2.x86_64.rpm
kernel-headers-0:4.18.0-193.116.1.el8_2.x86_64.rpm

Source:
kernel-0:4.18.0-193.116.1.el8_2.src.rpm

noarch:
kernel-abi-whitelists-0:4.18.0-193.116.1.el8_2.noarch.rpm
kernel-doc-0:4.18.0-193.116.1.el8_2.noarch.rpm

Red Hat Enterprise Linux BaseOS TUS (v. 8.2)

x86_64:
bpftool-0:4.18.0-193.116.1.el8_2.x86_64.rpm
bpftool-debuginfo-0:4.18.0-193.116.1.el8_2.x86_64.rpm
kernel-0:4.18.0-193.116.1.el8_2.x86_64.rpm
kernel-core-0:4.18.0-193.116.1.el8_2.x86_64.rpm
kernel-cross-headers-0:4.18.0-193.116.1.el8_2.x86_64.rpm
kernel-debug-0:4.18.0-193.116.1.el8_2.x86_64.rpm
kernel-debug-core-0:4.18.0-193.116.1.el8_2.x86_64.rpm
kernel-debug-debuginfo-0:4.18.0-193.116.1.el8_2.x86_64.rpm
kernel-debug-devel-0:4.18.0-193.116.1.el8_2.x86_64.rpm
kernel-debug-modules-0:4.18.0-193.116.1.el8_2.x86_64.rpm
kernel-debug-modules-extra-0:4.18.0-193.116.1.el8_2.x86_64.rpm
kernel-debuginfo-0:4.18.0-193.116.1.el8_2.x86_64.rpm
kernel-debuginfo-common-x86_64-0:4.18.0-193.116.1.el8_2.x86_64.rpm
kernel-devel-0:4.18.0-193.116.1.el8_2.x86_64.rpm
kernel-modules-0:4.18.0-193.116.1.el8_2.x86_64.rpm
kernel-modules-extra-0:4.18.0-193.116.1.el8_2.x86_64.rpm
kernel-tools-0:4.18.0-193.116.1.el8_2.x86_64.rpm
kernel-tools-debuginfo-0:4.18.0-193.116.1.el8_2.x86_64.rpm
kernel-tools-libs-0:4.18.0-193.116.1.el8_2.x86_64.rpm
perf-0:4.18.0-193.116.1.el8_2.x86_64.rpm
perf-debuginfo-0:4.18.0-193.116.1.el8_2.x86_64.rpm
python3-perf-0:4.18.0-193.116.1.el8_2.x86_64.rpm
python3-perf-debuginfo-0:4.18.0-193.116.1.el8_2.x86_64.rpm
kernel-headers-0:4.18.0-193.116.1.el8_2.x86_64.rpm

Source:
kernel-0:4.18.0-193.116.1.el8_2.src.rpm

noarch:
kernel-abi-whitelists-0:4.18.0-193.116.1.el8_2.noarch.rpm
kernel-doc-0:4.18.0-193.116.1.el8_2.noarch.rpm

7. References:

https://www.cve.org/CVERecord?id=CVE-2022-42896
https://www.cve.org/CVERecord?id=CVE-2023-4128
https://access.redhat.com/security/updates/classification/#important

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