Important: kernel-rt security and bug fix update
Summary
ALSA-2023:3708: Important: kernel-rt security and bug fix update. Affects kernel-rt versions < 5.14.0-284.18.1.rt14.303.el9_2. Fixed in 5.14.0-284.18.1.rt14.303.el9_2. How to fix ↓
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Background
The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.
Vulnerability Detail
The kernel-rt package is affected by multiple security vulnerabilities:
- CVE-2023-2235: A use-after-free vulnerability in the perf_group_detach function of the Linux Kernel Performance Events.
- CVE-2023-32233: A use-after-free vulnerability in nf_tables when processing batch requests, which can lead to privilege escalation.
- CVE-2023-2002: Unauthorized management command execution in the Bluetooth subsystem.
- CVE-2023-2124: Out-of-bounds access in the XFS subsystem of the Linux kernel.
- CVE-2023-2194: An out-of-bounds write vulnerability in the i2c subsystem.
- CVE-2023-28466: A race condition in do_tls_getsockopt may lead to use-after-free or NULL pointer dereference in the TLS subsystem.
How To Fix
Minimum fixed version
5.14.0-284.18.1.rt14.303.el9_2
This is the first release that contains the fix.
sudo dnf update kernel-rtTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Conclusion
It is important to update the kernel-rt package to address these security vulnerabilities. For further support on vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for kernel-rt →
FAQ
These vulnerabilities can lead to various security issues, including privilege escalation, unauthorized command execution, and potential denial-of-service attacks.
At the time of this advisory, there are no known exploits for these vulnerabilities.
Yes, a system restart is required after applying the update to ensure the new kernel is loaded.
Yes, these vulnerabilities can be exploited remotely if the affected system is exposed to the network.
No specific workarounds are mentioned for these vulnerabilities. It is recommended to apply the provided update.
Related vulnerabilities
Recent vulnerabilities recorded for kernel-rt.
