CVE-2022-49639: cipso: Fix data-races around sysctl.
First published: Wed Feb 26 2025(Updated: )
In the Linux kernel, the following vulnerability has been resolved: cipso: Fix data-races around sysctl. While reading cipso sysctl variables, they can be changed concurrently. So, we need to add READ_ONCE() to avoid data-races.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | >=2.6.19<4.9.324 | |
| Linux Kernel | >=4.10<4.14.289 | |
| Linux Kernel | >=4.15<4.19.253 | |
| Linux Kernel | >=4.20<5.4.207 | |
| Linux Kernel | >=5.5<5.10.132 | |
| Linux Kernel | >=5.11<5.15.56 | |
| Linux Kernel | >=5.16<5.18.13 | |
| Linux Kernel | =5.19-rc1 | |
| Linux Kernel | =5.19-rc2 | |
| Linux Kernel | =5.19-rc3 | |
| Linux Kernel | =5.19-rc4 | |
| Linux Kernel | =5.19-rc5 | |
| Linux Kernel | =5.19-rc6 |
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Reference Links
- https://git.kernel.org/stable/c/2764f82bbc158d106693ae3ced3675cf4b963b35
- https://git.kernel.org/stable/c/c321e99d2725d11f7e6a4ebd9ce752259f0bae81
- https://git.kernel.org/stable/c/ca26ca5e2f3eeb3e6fe699cd6effa3b4b2aa8698
- https://git.kernel.org/stable/c/0e41a0f73ccb9be112a80bde3804a771633caaef
- https://git.kernel.org/stable/c/fe2a35fa2c4f9c8ce5ef970eb927031387f9446a
- https://git.kernel.org/stable/c/07b0caf8aeb9b82e6ecc6c292a3e47c7fcdb1148
- https://git.kernel.org/stable/c/59e26906b89cc35bb54476498772b45cbc32323f
- https://git.kernel.org/stable/c/dd44f04b9214adb68ef5684ae87a81ba03632250
Frequently Asked Questions
What is the severity of CVE-2022-49639?
CVE-2022-49639 has a medium severity due to potential data races affecting system stability.
How do I fix CVE-2022-49639?
To mitigate CVE-2022-49639, ensure that your Linux kernel is updated to a version that includes the fix for the identified data races.
What systems are affected by CVE-2022-49639?
CVE-2022-49639 affects various versions of the Linux kernel, specifically versions between 2.6.19 and 5.19-rc6.
Can CVE-2022-49639 be exploited remotely?
CVE-2022-49639 does not appear to involve remote exploitation, but it may lead to local stability issues.
Is there a patch available for CVE-2022-49639?
Yes, security patches for CVE-2022-49639 are available in the latest Linux kernel releases.
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