What’s Vulnerable › Vulnerabilities

CVE-2022-49638: icmp: Fix data-races around sysctl.

• Severity: medium (CVSS 4.7 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-02-26 · updated 2026-06-17
• Weakness: CWE-362

Description

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.

Affected products

• Linux kernel: from 3.18 before 4.9.324; from 4.10 before 4.14.289; from 4.15 before 4.19.253; from 4.20 before 5.4.207; from 5.5 before 5.10.132; from 5.11 before 5.15.56 — fixed in 4.14.289, 4.19.253, 4.9.324, 5.10.132, 5.15.56, 5.18.13

How to fix

Upgrade to a fixed version: Linux kernel 4.14.289, 4.19.253, 4.9.324, 5.10.132. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/0cba7ca667ceb06934746ddd9833a25847bde81d
• https://git.kernel.org/stable/c/1740e5922fbb705637ae9fa5203db132fc45f9f6
• https://git.kernel.org/stable/c/48d7ee321ea5182c6a70782aa186422a70e67e22
• https://git.kernel.org/stable/c/53ecd09ef2fb35fa69667ae8e414ef6b00fd3bf6
• https://git.kernel.org/stable/c/798c2cf57c63ab39c8aac24d6a3d50f4fa5eeb06
• https://git.kernel.org/stable/c/e088ceb73c24ab4774da391d54a6426f4bfaefce
• https://git.kernel.org/stable/c/e2828e8c605853f71267825c9415437c0a93e4f2
• https://git.kernel.org/stable/c/edeec63b13c252193d626c2a48d7a2f0e7016dc2

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