CVE-2022-49594: tcp: Fix a data-race around sysctl_tcp_mtu_probe_floor.

CVE-2022-49594 PUBLISHED CVSS 4.7 MEDIUM

tcp: Fix a data-race around sysctl_tcp_mtu_probe_floor.

Reported by linux · Published February 26, 2025

In the Linux kernel, the following vulnerability has been resolved: tcp: Fix a data-race around sysctl_tcp_mtu_probe_floor. While reading sysctl_tcp_mtu_probe_floor, it can be changed concurrently. Thus, we need to add READ_ONCE() to its reader.

Fixed versions

Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.

Package	Ecosystem	Fixed in
linux_kernel	linux	5.18.15, 5.15.58, 5.10.134, 5.4.208

Risk scores

CVSS 3.1

4.7

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

Vendor	Product	Versions
Linux	Linux	c04b79b6cfd714144f6a2cf359603d82ee631e62, c04b79b6cfd714144f6a2cf359603d82ee631e62, c04b79b6cfd714144f6a2cf359603d82ee631e62
Linux	Linux	5.4, 0, 5.4.208
Linux	Linux	*, 5.15.58, 5.19
linux	linux_kernel	5.4, 5.4, 5.4

Timeline

Feb 26, 2025 CVE Published
Feb 27, 2025 EPSS Score (30 in total, the first dated here)
May 23, 2026 Coalition ESS Score
Jun 2, 2026 Security Advisory

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vulnetix vdb fixes CVE-2022-49594

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References

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