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Red Hat Security Advisory 2023-4256-01

Red Hat Security Advisory 2023-4256-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include privilege escalation and use-after-free vulnerabilities.

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

Synopsis: Important: kernel security and bug fix update
Advisory ID: RHSA-2023:4256-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2023:4256
Issue date: 2023-07-25
CVE Names: CVE-2023-1281 CVE-2023-32233
=====================================================================

Summary:

An update for kernel is now available for Red Hat Enterprise Linux 8.4
Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.4
Telecommunications Update Service, and Red Hat Enterprise Linux 8.4 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.

Relevant releases/architectures:

Red Hat Enterprise Linux BaseOS AUS (v.8.4) - noarch, x86_64
Red Hat Enterprise Linux BaseOS E4S (v.8.4) - aarch64, noarch, ppc64le, s390x, x86_64
Red Hat Enterprise Linux BaseOS TUS (v.8.4) - aarch64, noarch, ppc64le, s390x, x86_64

Description:

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

Security Fix(es):

kernel: tcindex: use-after-free vulnerability in traffic control index
filter allows privilege escalation (CVE-2023-1281)
kernel: netfilter: use-after-free in nf_tables when processing batch
requests can lead to privilege escalation (CVE-2023-32233)

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):

s390/qeth: cache link_info for ethtool (BZ#2174365)
RHEL8.4 - kernel: fix __clear_user() inline assembly constraints
(BZ#2192605)
ice: ptp4l cpu usage spikes (BZ#2203288)
40%~70% block performance regression for localfs backend write between
kernel-4.18.0-235.el8.x86_64 and kernel-4.18.0-277.el8.x86_64 (BZ#2204516)
Invalid character detected by rpminspect in
Documentation/translations/zh_CN/process/magic-number.rst (BZ#2208287)
simultaneous writes to a page on xfs can result in zero-byte data
(BZ#2208413)
Windows Server 2019 guest randomly pauses with “KVM: entry failed,
hardware error 0x80000021” [rhel8.8GA] (BZ#2211662)
[Marvell 8.7 Bug] qedi shutdown handler hangs upon reboot (BZ#2215333)

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.

Bugs fixed (https://bugzilla.redhat.com/):

2181847 - CVE-2023-1281 kernel: tcindex: use-after-free vulnerability in traffic control index filter allows privilege escalation
2196105 - CVE-2023-32233 kernel: netfilter: use-after-free in nf_tables when processing batch requests can lead to privilege escalation

Package List:

Red Hat Enterprise Linux BaseOS AUS (v.8.4):

Source:
kernel-4.18.0-305.97.1.el8_4.src.rpm

noarch:
kernel-abi-stablelists-4.18.0-305.97.1.el8_4.noarch.rpm
kernel-doc-4.18.0-305.97.1.el8_4.noarch.rpm

x86_64:
bpftool-4.18.0-305.97.1.el8_4.x86_64.rpm
bpftool-debuginfo-4.18.0-305.97.1.el8_4.x86_64.rpm
kernel-4.18.0-305.97.1.el8_4.x86_64.rpm
kernel-core-4.18.0-305.97.1.el8_4.x86_64.rpm
kernel-cross-headers-4.18.0-305.97.1.el8_4.x86_64.rpm
kernel-debug-4.18.0-305.97.1.el8_4.x86_64.rpm
kernel-debug-core-4.18.0-305.97.1.el8_4.x86_64.rpm
kernel-debug-debuginfo-4.18.0-305.97.1.el8_4.x86_64.rpm
kernel-debug-devel-4.18.0-305.97.1.el8_4.x86_64.rpm
kernel-debug-modules-4.18.0-305.97.1.el8_4.x86_64.rpm
kernel-debug-modules-extra-4.18.0-305.97.1.el8_4.x86_64.rpm
kernel-debuginfo-4.18.0-305.97.1.el8_4.x86_64.rpm
kernel-debuginfo-common-x86_64-4.18.0-305.97.1.el8_4.x86_64.rpm
kernel-devel-4.18.0-305.97.1.el8_4.x86_64.rpm
kernel-headers-4.18.0-305.97.1.el8_4.x86_64.rpm
kernel-modules-4.18.0-305.97.1.el8_4.x86_64.rpm
kernel-modules-extra-4.18.0-305.97.1.el8_4.x86_64.rpm
kernel-tools-4.18.0-305.97.1.el8_4.x86_64.rpm
kernel-tools-debuginfo-4.18.0-305.97.1.el8_4.x86_64.rpm
kernel-tools-libs-4.18.0-305.97.1.el8_4.x86_64.rpm
perf-4.18.0-305.97.1.el8_4.x86_64.rpm
perf-debuginfo-4.18.0-305.97.1.el8_4.x86_64.rpm
python3-perf-4.18.0-305.97.1.el8_4.x86_64.rpm
python3-perf-debuginfo-4.18.0-305.97.1.el8_4.x86_64.rpm

Red Hat Enterprise Linux BaseOS E4S (v.8.4):

Source:
kernel-4.18.0-305.97.1.el8_4.src.rpm

aarch64:
bpftool-4.18.0-305.97.1.el8_4.aarch64.rpm
bpftool-debuginfo-4.18.0-305.97.1.el8_4.aarch64.rpm
kernel-4.18.0-305.97.1.el8_4.aarch64.rpm
kernel-core-4.18.0-305.97.1.el8_4.aarch64.rpm
kernel-cross-headers-4.18.0-305.97.1.el8_4.aarch64.rpm
kernel-debug-4.18.0-305.97.1.el8_4.aarch64.rpm
kernel-debug-core-4.18.0-305.97.1.el8_4.aarch64.rpm
kernel-debug-debuginfo-4.18.0-305.97.1.el8_4.aarch64.rpm
kernel-debug-devel-4.18.0-305.97.1.el8_4.aarch64.rpm
kernel-debug-modules-4.18.0-305.97.1.el8_4.aarch64.rpm
kernel-debug-modules-extra-4.18.0-305.97.1.el8_4.aarch64.rpm
kernel-debuginfo-4.18.0-305.97.1.el8_4.aarch64.rpm
kernel-debuginfo-common-aarch64-4.18.0-305.97.1.el8_4.aarch64.rpm
kernel-devel-4.18.0-305.97.1.el8_4.aarch64.rpm
kernel-headers-4.18.0-305.97.1.el8_4.aarch64.rpm
kernel-modules-4.18.0-305.97.1.el8_4.aarch64.rpm
kernel-modules-extra-4.18.0-305.97.1.el8_4.aarch64.rpm
kernel-tools-4.18.0-305.97.1.el8_4.aarch64.rpm
kernel-tools-debuginfo-4.18.0-305.97.1.el8_4.aarch64.rpm
kernel-tools-libs-4.18.0-305.97.1.el8_4.aarch64.rpm
perf-4.18.0-305.97.1.el8_4.aarch64.rpm
perf-debuginfo-4.18.0-305.97.1.el8_4.aarch64.rpm
python3-perf-4.18.0-305.97.1.el8_4.aarch64.rpm
python3-perf-debuginfo-4.18.0-305.97.1.el8_4.aarch64.rpm

noarch:
kernel-abi-stablelists-4.18.0-305.97.1.el8_4.noarch.rpm
kernel-doc-4.18.0-305.97.1.el8_4.noarch.rpm

ppc64le:
bpftool-4.18.0-305.97.1.el8_4.ppc64le.rpm
bpftool-debuginfo-4.18.0-305.97.1.el8_4.ppc64le.rpm
kernel-4.18.0-305.97.1.el8_4.ppc64le.rpm
kernel-core-4.18.0-305.97.1.el8_4.ppc64le.rpm
kernel-cross-headers-4.18.0-305.97.1.el8_4.ppc64le.rpm
kernel-debug-4.18.0-305.97.1.el8_4.ppc64le.rpm
kernel-debug-core-4.18.0-305.97.1.el8_4.ppc64le.rpm
kernel-debug-debuginfo-4.18.0-305.97.1.el8_4.ppc64le.rpm
kernel-debug-devel-4.18.0-305.97.1.el8_4.ppc64le.rpm
kernel-debug-modules-4.18.0-305.97.1.el8_4.ppc64le.rpm
kernel-debug-modules-extra-4.18.0-305.97.1.el8_4.ppc64le.rpm
kernel-debuginfo-4.18.0-305.97.1.el8_4.ppc64le.rpm
kernel-debuginfo-common-ppc64le-4.18.0-305.97.1.el8_4.ppc64le.rpm
kernel-devel-4.18.0-305.97.1.el8_4.ppc64le.rpm
kernel-headers-4.18.0-305.97.1.el8_4.ppc64le.rpm
kernel-modules-4.18.0-305.97.1.el8_4.ppc64le.rpm
kernel-modules-extra-4.18.0-305.97.1.el8_4.ppc64le.rpm
kernel-tools-4.18.0-305.97.1.el8_4.ppc64le.rpm
kernel-tools-debuginfo-4.18.0-305.97.1.el8_4.ppc64le.rpm
kernel-tools-libs-4.18.0-305.97.1.el8_4.ppc64le.rpm
perf-4.18.0-305.97.1.el8_4.ppc64le.rpm
perf-debuginfo-4.18.0-305.97.1.el8_4.ppc64le.rpm
python3-perf-4.18.0-305.97.1.el8_4.ppc64le.rpm
python3-perf-debuginfo-4.18.0-305.97.1.el8_4.ppc64le.rpm

s390x:
bpftool-4.18.0-305.97.1.el8_4.s390x.rpm
bpftool-debuginfo-4.18.0-305.97.1.el8_4.s390x.rpm
kernel-4.18.0-305.97.1.el8_4.s390x.rpm
kernel-core-4.18.0-305.97.1.el8_4.s390x.rpm
kernel-cross-headers-4.18.0-305.97.1.el8_4.s390x.rpm
kernel-debug-4.18.0-305.97.1.el8_4.s390x.rpm
kernel-debug-core-4.18.0-305.97.1.el8_4.s390x.rpm
kernel-debug-debuginfo-4.18.0-305.97.1.el8_4.s390x.rpm
kernel-debug-devel-4.18.0-305.97.1.el8_4.s390x.rpm
kernel-debug-modules-4.18.0-305.97.1.el8_4.s390x.rpm
kernel-debug-modules-extra-4.18.0-305.97.1.el8_4.s390x.rpm
kernel-debuginfo-4.18.0-305.97.1.el8_4.s390x.rpm
kernel-debuginfo-common-s390x-4.18.0-305.97.1.el8_4.s390x.rpm
kernel-devel-4.18.0-305.97.1.el8_4.s390x.rpm
kernel-headers-4.18.0-305.97.1.el8_4.s390x.rpm
kernel-modules-4.18.0-305.97.1.el8_4.s390x.rpm
kernel-modules-extra-4.18.0-305.97.1.el8_4.s390x.rpm
kernel-tools-4.18.0-305.97.1.el8_4.s390x.rpm
kernel-tools-debuginfo-4.18.0-305.97.1.el8_4.s390x.rpm
kernel-zfcpdump-4.18.0-305.97.1.el8_4.s390x.rpm
kernel-zfcpdump-core-4.18.0-305.97.1.el8_4.s390x.rpm
kernel-zfcpdump-debuginfo-4.18.0-305.97.1.el8_4.s390x.rpm
kernel-zfcpdump-devel-4.18.0-305.97.1.el8_4.s390x.rpm
kernel-zfcpdump-modules-4.18.0-305.97.1.el8_4.s390x.rpm
kernel-zfcpdump-modules-extra-4.18.0-305.97.1.el8_4.s390x.rpm
perf-4.18.0-305.97.1.el8_4.s390x.rpm
perf-debuginfo-4.18.0-305.97.1.el8_4.s390x.rpm
python3-perf-4.18.0-305.97.1.el8_4.s390x.rpm
python3-perf-debuginfo-4.18.0-305.97.1.el8_4.s390x.rpm

Red Hat Enterprise Linux BaseOS TUS (v.8.4):

Source:
kernel-4.18.0-305.97.1.el8_4.src.rpm

noarch:
kernel-abi-stablelists-4.18.0-305.97.1.el8_4.noarch.rpm
kernel-doc-4.18.0-305.97.1.el8_4.noarch.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/

References:

https://access.redhat.com/security/cve/CVE-2023-1281
https://access.redhat.com/security/cve/CVE-2023-32233
https://access.redhat.com/security/updates/classification/#important

Contact:

The Red Hat security contact is [email protected]. More contact
details at https://access.redhat.com/security/team/contact/

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Red Hat Security Advisory 2023-3351-01

Red Hat Security Advisory 2023-3351-01 - This is a kernel live patch module which is automatically loaded by the RPM post-install script to modify the code of a running kernel. Issues addressed include privilege escalation and use-after-free vulnerabilities.

1 year ago

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Red Hat Security Advisory 2023-3350-01

Red Hat Security Advisory 2023-3350-01 - The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Issues addressed include privilege escalation and use-after-free vulnerabilities.

1 year ago

Packet Storm

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Ubuntu Security Notice USN-6134-1

Ubuntu Security Notice 6134-1 - It was discovered that the Traffic-Control Index implementation in the Linux kernel did not properly perform filter deactivation in some situations. A local attacker could possibly use this to gain elevated privileges. Please note that with the fix for this CVE, kernel support for the TCINDEX classifier has been removed. It was discovered that the Traffic-Control Index implementation in the Linux kernel contained a use-after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code.

1 year ago

Packet Storm

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Ubuntu Security Notice USN-6131-1

Ubuntu Security Notice 6131-1 - Patryk Sondej and Piotr Krysiuk discovered that a race condition existed in the netfilter subsystem of the Linux kernel when processing batch requests, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Gwangun Jung discovered that the Quick Fair Queueing scheduler implementation in the Linux kernel contained an out-of-bounds write vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code.

1 year ago

Packet Storm

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Ubuntu Security Notice USN-6093-1

Ubuntu Security Notice 6093-1 - It was discovered that the Traffic-Control Index implementation in the Linux kernel did not properly perform filter deactivation in some situations. A local attacker could possibly use this to gain elevated privileges. Please note that with the fix for this CVE, kernel support for the TCINDEX classifier has been removed. It was discovered that the Traffic-Control Index implementation in the Linux kernel contained a use-after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code.

1 year ago

Packet Storm

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CVE-2023-32233: netfilter: nf_tables: deactivate anonymous set from preparation phase · torvalds/linux@c1592a8

In the Linux kernel through 6.3.1, a use-after-free in Netfilter nf_tables when processing batch requests can be abused to perform arbitrary read and write operations on kernel memory. Unprivileged local users can obtain root privileges. This occurs because anonymous sets are mishandled.

1 year ago

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Ubuntu Security Notice USN-6057-1

Ubuntu Security Notice 6057-1 - It was discovered that the Traffic-Control Index implementation in the Linux kernel contained a use-after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. It was discovered that the OverlayFS implementation in the Linux kernel did not properly handle copy up operation in some conditions. A local attacker could possibly use this to gain elevated privileges.

1 year ago

Packet Storm

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Ubuntu Security Notice USN-5977-1

Ubuntu Security Notice 5977-1 - It was discovered that the network queuing discipline implementation in the Linux kernel contained a use-after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. It was discovered that the KVM VMX implementation in the Linux kernel did not properly handle indirect branch prediction isolation between L1 and L2 VMs. An attacker in a guest VM could use this to expose sensitive information from the host OS or other guest VMs.

1 year ago

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CVE-2023-1281

Use After Free vulnerability in Linux kernel traffic control index filter (tcindex) allows Privilege Escalation. The imperfect hash area can be updated while packets are traversing, which will cause a use-after-free when 'tcf_exts_exec()' is called with the destroyed tcf_ext. A local attacker user can use this vulnerability to elevate its privileges to root. This issue affects Linux Kernel: from 4.14 before git commit ee059170b1f7e94e55fa6cadee544e176a6e59c2.

1 year ago

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