CVE-2022-49630

tcp: Fix a data-race around sysctl_tcp_ecn_fallback.

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_ecn_fallback.

While reading sysctl_tcp_ecn_fallback, 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	492135557dc090a1abb2cfbe1a412757e3ed68ab to before 8bcf7339f2cf70ea4461df6ea045d1aadfabfa11Affected 492135557dc090a1abb2cfbe1a412757e3ed68ab to before 1ec3d6c2626ee6e1b36b7bd006873a271406ba61Affected 492135557dc090a1abb2cfbe1a412757e3ed68ab to before 12b8d9ca7e678abc48195294494f1815b555d658Affected
LinuxLinux	4.2Affected before 4.2Not affected 5.15.56 through 5.15.Not affected 5.18.13 through 5.18.Not affected 5.19 and laterNot affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.