Race condition in Linux kernel - CVE-2026-97523
Published: September 28, 2026
Vulnerability identifier: #VU152681
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-97523
CWE-ID: CWE-362
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to a race condition in the mptcp scheduler when subflow socket states change. A remote attacker can trigger the race condition to cause a denial of service.
Affected software
Linux kernel
How to mitigate CVE-2026-97523
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3