CVE-2022-49638: icmp: Fix data-races around sysctl.
First published: Wed Feb 26 2025(Updated: )
In the Linux kernel, the following vulnerability has been resolved: icmp: Fix data-races around sysctl. While reading icmp 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 | ||
| Linux Kernel | >=3.18<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/1740e5922fbb705637ae9fa5203db132fc45f9f6
- https://git.kernel.org/stable/c/53ecd09ef2fb35fa69667ae8e414ef6b00fd3bf6
- https://git.kernel.org/stable/c/edeec63b13c252193d626c2a48d7a2f0e7016dc2
- https://git.kernel.org/stable/c/0cba7ca667ceb06934746ddd9833a25847bde81d
- https://git.kernel.org/stable/c/e088ceb73c24ab4774da391d54a6426f4bfaefce
- https://git.kernel.org/stable/c/e2828e8c605853f71267825c9415437c0a93e4f2
- https://git.kernel.org/stable/c/798c2cf57c63ab39c8aac24d6a3d50f4fa5eeb06
- https://git.kernel.org/stable/c/48d7ee321ea5182c6a70782aa186422a70e67e22
Frequently Asked Questions
What is the severity of CVE-2022-49638?
CVE-2022-49638 is a medium severity vulnerability related to data races in the Linux kernel's ICMP sysctl variables.
How do I fix CVE-2022-49638?
To fix CVE-2022-49638, ensure you update your Linux kernel to a version that includes the patch addressing this vulnerability.
What versions of the Linux kernel are affected by CVE-2022-49638?
CVE-2022-49638 affects various versions of the Linux kernel between 3.18 and 5.19-rc6.
What types of systems are impacted by CVE-2022-49638?
CVE-2022-49638 impacts any systems running affected versions of the Linux kernel that utilize ICMP networking.
Is there a known exploit for CVE-2022-49638?
As of this time, there is no public information indicating that CVE-2022-49638 has been actively exploited in the wild.
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