Important: kernel-rt security and bug fix update
Summary
ALSA-2023:0854: Important: kernel-rt security and bug fix update. Affects kernel-rt versions < 4.18.0-425.13.1.rt7.223.el8_7. Fixed in 4.18.0-425.13.1.rt7.223.el8_7. How to fix ↓
Check if this vulnerability affects your application
Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.
No signup required · Results in about 60 seconds
Background
The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.
Vulnerability Detail
This update addresses multiple security vulnerabilities:
- CVE-2022-41222: A use-after-free vulnerability in mm/mremap.c
- CVE-2022-43945: A buffer overflow in nfsd by RPC message over TCP with garbage data
- CVE-2022-2873: An out-of-bounds vulnerability in the i2c-ismt driver
These vulnerabilities could potentially lead to various security issues, including arbitrary code execution, denial of service, and information disclosure.
How To Fix
Minimum fixed version
4.18.0-425.13.1.rt7.223.el8_7
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 →
Workaround
There are no known workarounds for these vulnerabilities.
Conclusion
It is highly recommended to update the kernel-rt package to the latest version to mitigate the security vulnerabilities. If you need further assistance or support in addressing these vulnerabilities, please contact DevNack.com.
See every vulnerability recorded for kernel-rt →
FAQ
These vulnerabilities could allow an attacker to execute arbitrary code, cause a denial of service, or disclose sensitive information.
There are no known exploits for these vulnerabilities at the time of this advisory.
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 malicious network traffic.
For more details about these vulnerabilities, including the CVSS scores and acknowledgments, refer to the CVE pages listed in the References section of the advisory.
Related vulnerabilities
Recent vulnerabilities recorded for kernel-rt.
