CVE-2024-26708
kernel: mptcp: really cope with fastopen race
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · April 3, 2024
Updated · June 28, 2026
Description
A vulnerability was found in the subflow_simultaneous_connect() function in the mptcp component in the Linux kernel, where not all possible subflow states are evaluated, leading to a potential race condition. This issue could lead to undefined network behavior.
Statement
This vulnerability is rated as moderate because a race condition could be triggered and this could result in undefined network behavior. However, this undefined behavior would most likely only cause issues for a specific TCP connection/subflow.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-362 · Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')