What’s Vulnerable › Vulnerabilities

CVE-2022-49599: tcp: Fix data-races around sysctl_tcp_l3mdev_accept.

• 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: tcp: Fix data-races around sysctl_tcp_l3mdev_accept. While reading sysctl_tcp_l3mdev_accept, it can be changed concurrently. Thus, we need to add READ_ONCE() to its readers.

Affected products

• Linux kernel: from 4.5 before 5.10.137; from 5.11 before 5.15.58; from 5.16 before 5.18.15; 5.19-rc1, 5.19-rc2, 5.19-rc3, 5.19-rc4, 5.19-rc5, 5.19-rc6 (+1) — fixed in 5.10.137, 5.15.58, 5.18.15

How to fix

Upgrade to a fixed version: Linux kernel 5.10.137, 5.15.58, 5.18.15. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/08a75f10679470552a3a443f9aefd1399604d31d
• https://git.kernel.org/stable/c/1d9c81833dec46ccb52a1d0db970fefb7c4fa071
• https://git.kernel.org/stable/c/7d38d86b818104cf88961f3aebea34da89364a8e
• https://git.kernel.org/stable/c/9ba9cd43b5776c27d25e5a32dde9e80bdeb1c6a1

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