Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: sysctl: Fix data-races in proc_dou8vec_minmax(). A sysctl variable is accessed concurrently, and there is always a chance of data-race. So, all readers and writers need some basic protection to avoid load/store-tearing. This patch changes proc_dou8vec_minmax() to use READ_ONCE() and WRITE_ONCE() internally to fix data-races on the sysctl side. For now, proc_dou8vec_minmax() itself is tolerant to a data-race, but we still need to add annotations on the other subsystem's side.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.13, < 5.15.56 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/5f776daef0b5354615ec4b4234cd9539ca05f273Patch
- https://git.kernel.org/stable/c/7dee5d7747a69aa2be41f04c6a7ecfe3ac8cdf18Patch
- https://git.kernel.org/stable/c/e58b02e445463065b4078bf621561da75197853fPatch
- https://git.kernel.org/stable/c/f177b382c33900d0e5a9766493c11a1074076f78Patch
FAQ
What is CVE-2022-49634?
CVE-2022-49634 is a vulnerability with a CVSS score of 4.7 (MEDIUM). In the Linux kernel, the following vulnerability has been resolved: sysctl: Fix data-races in proc_dou8vec_minmax(). A sysctl variable is accessed concurrently, and there is always a chance of data-...
How severe is CVE-2022-49634?
CVE-2022-49634 has been rated MEDIUM with a CVSS base score of 4.7/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-49634?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.