CVE-2022-49594

tcp: Fix a data-race around sysctl_tcp_mtu_probe_floor.

State: Published
Severity: 4.7 Medium
Published: Feb 26, 2025
Updated: May 11, 2026
Reserved: Feb 26, 2025

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	4.7 Medium	CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H	CISA-ADP

Weaknesses

CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Affected Products

Product	Versions
LinuxLinux	c04b79b6cfd714144f6a2cf359603d82ee631e62 to before 033963b220633ed1602d458e7e4ac06afa9fefb2Affected c04b79b6cfd714144f6a2cf359603d82ee631e62 to before d5bece4df6090395f891110ef52a6f82d16685dbAffected c04b79b6cfd714144f6a2cf359603d82ee631e62 to before cc36c37f5fe066c4708e623ead96dc8f57224bf5Affected c04b79b6cfd714144f6a2cf359603d82ee631e62 to before e2ecbf3f0aa88277d43908c53b99399d55729ff9Affected c04b79b6cfd714144f6a2cf359603d82ee631e62 to before 8e92d4423615a5257d0d871fc067aa561f597debAffected
LinuxLinux	5.4Affected before 5.4Not affected 5.4.208 through 5.4.Not affected 5.10.134 through 5.10.Not affected 5.15.58 through 5.15.Not affected 5.18.15 through 5.18.Not affected 5.19 and laterNot affected

Product

Versions

LinuxLinux

c04b79b6cfd714144f6a2cf359603d82ee631e62 to before 033963b220633ed1602d458e7e4ac06afa9fefb2Affected
c04b79b6cfd714144f6a2cf359603d82ee631e62 to before d5bece4df6090395f891110ef52a6f82d16685dbAffected
c04b79b6cfd714144f6a2cf359603d82ee631e62 to before cc36c37f5fe066c4708e623ead96dc8f57224bf5Affected
c04b79b6cfd714144f6a2cf359603d82ee631e62 to before e2ecbf3f0aa88277d43908c53b99399d55729ff9Affected
c04b79b6cfd714144f6a2cf359603d82ee631e62 to before 8e92d4423615a5257d0d871fc067aa561f597debAffected

LinuxLinux

5.4Affected
before 5.4Not affected
5.4.208 through 5.4.*Not affected
5.10.134 through 5.10.*Not affected
5.15.58 through 5.15.*Not affected
5.18.15 through 5.18.*Not affected
5.19 and laterNot affected

References

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