Important: kernel-rt security and bug fix update
Summary
ALSA-2022:6582: Important: kernel-rt security and bug fix update. Affects kernel-rt versions < 5.14.0-70.26.1.rt21.98.el9_0. Fixed in 5.14.0-70.26.1.rt21.98.el9_0. 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
This update addresses two security vulnerabilities:
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CVE-2022-34918: A heap overflow vulnerability in nft_set_elem_init() function in the kernel could allow an attacker to execute arbitrary code or cause a denial of service by sending specially crafted packets.
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CVE-2022-2078: A buffer overflow vulnerability in nft_set_desc_concat_parse() function in the kernel could allow an attacker to execute arbitrary code or cause a denial of service by sending specially crafted packets.
How To Fix
Minimum fixed version
5.14.0-70.26.1.rt21.98.el9_0
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 recommended to update the kernel-rt packages to address these security vulnerabilities. For further assistance or support on vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for kernel-rt →
FAQ
These vulnerabilities could allow an attacker to execute arbitrary code or cause a denial of service on a system running the affected kernel-rt packages.
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 by sending specially crafted packets to the affected system.
More details about these vulnerabilities, including the CVSS score and acknowledgments, can be found on the CVE pages: CVE-2022-34918 and CVE-2022-2078.
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