RHSA-2023:3470: Important: kernel-rt security and bug fix update
First published: Tue Jun 06 2023(Updated: )
The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.<br>Security Fix(es):<br><li> kernel: net/ulp: use-after-free in listening ULP sockets (CVE-2023-0461)</li> <li> kernel: udmabuf: improper validation of array index leading to local privilege escalation (CVE-2023-2008)</li> <li> kernel: netfilter: use-after-free in nf_tables when processing batch requests can lead to privilege escalation (CVE-2023-32233)</li> 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.<br>Bug Fix(es):<br><li> kernel-rt-debug: BUG: MAX_LOCKDEP_CHAINS too low (BZ#2181286)</li> <li> kernel-rt: update RT source tree to the latest RHEL-9.0.z9 Batch (BZ#2186491)</li> <li> kernel-rt: INFO: task deadline_test:1778 blocked for more than 622 seconds (BZ#2188662)</li>
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel-rt | <5.14.0-70.58.1.rt21.129.el9_0 | 5.14.0-70.58.1.rt21.129.el9_0 |
| redhat/kernel-rt | <5.14.0-70.58.1.rt21.129.el9_0 | 5.14.0-70.58.1.rt21.129.el9_0 |
| redhat/kernel-rt-core | <5.14.0-70.58.1.rt21.129.el9_0 | 5.14.0-70.58.1.rt21.129.el9_0 |
| redhat/kernel-rt-debug | <5.14.0-70.58.1.rt21.129.el9_0 | 5.14.0-70.58.1.rt21.129.el9_0 |
| redhat/kernel-rt-debug-core | <5.14.0-70.58.1.rt21.129.el9_0 | 5.14.0-70.58.1.rt21.129.el9_0 |
| redhat/kernel-rt-debug-debuginfo | <5.14.0-70.58.1.rt21.129.el9_0 | 5.14.0-70.58.1.rt21.129.el9_0 |
| redhat/kernel-rt-debug-devel | <5.14.0-70.58.1.rt21.129.el9_0 | 5.14.0-70.58.1.rt21.129.el9_0 |
| redhat/kernel-rt-debug-modules | <5.14.0-70.58.1.rt21.129.el9_0 | 5.14.0-70.58.1.rt21.129.el9_0 |
| redhat/kernel-rt-debug-modules-extra | <5.14.0-70.58.1.rt21.129.el9_0 | 5.14.0-70.58.1.rt21.129.el9_0 |
| redhat/kernel-rt-debuginfo | <5.14.0-70.58.1.rt21.129.el9_0 | 5.14.0-70.58.1.rt21.129.el9_0 |
| redhat/kernel-rt-devel | <5.14.0-70.58.1.rt21.129.el9_0 | 5.14.0-70.58.1.rt21.129.el9_0 |
| redhat/kernel-rt-modules | <5.14.0-70.58.1.rt21.129.el9_0 | 5.14.0-70.58.1.rt21.129.el9_0 |
| redhat/kernel-rt-modules-extra | <5.14.0-70.58.1.rt21.129.el9_0 | 5.14.0-70.58.1.rt21.129.el9_0 |
| redhat/kernel-rt-debug-kvm | <5.14.0-70.58.1.rt21.129.el9_0 | 5.14.0-70.58.1.rt21.129.el9_0 |
| redhat/kernel-rt-kvm | <5.14.0-70.58.1.rt21.129.el9_0 | 5.14.0-70.58.1.rt21.129.el9_0 |
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Reference Links
Frequently Asked Questions
What is the severity of RHSA-2023:3470?
The severity of RHSA-2023:3470 is critical due to a use-after-free vulnerability in the kernel.
How do I fix RHSA-2023:3470?
To fix RHSA-2023:3470, you should upgrade to the kernel-rt package version 5.14.0-70.58.1.rt21.129.el9_0.
What systems are affected by RHSA-2023:3470?
RHSA-2023:3470 affects systems running the kernel-rt package version prior to 5.14.0-70.58.1.rt21.129.el9_0.
What is the cause of the vulnerability in RHSA-2023:3470?
The vulnerability in RHSA-2023:3470 is caused by a use-after-free error in listening ULP sockets.
Are there any workarounds for the issue reported in RHSA-2023:3470?
There are no official workarounds for the issue reported in RHSA-2023:3470; applying the update is the recommended action.
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