Time-of-check Time-of-use (TOCTOU) Race Condition in Linux kernel - CVE-2026-98130
Published: September 28, 2026
Vulnerability identifier: #VU152314
CSH Severity: High
CVSS v4: 9.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-98130
CWE-ID: CWE-367
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to trigger a use-after-free.
The vulnerability exists due to a time-of-check to time-of-use race condition in the SCTP_CMD_TIMER_START handler when processing SCTP timer start commands. A remote attacker can trigger the race condition to trigger a use-after-free.
Affected software
Linux kernel
How to mitigate CVE-2026-98130
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3