SB2026092858 - Time-of-check Time-of-use (TOCTOU) Race Condition in Linux kernel sctp
Published: September 28, 2026 Updated: September 30, 2026
Security Bulletin ID
SB2026092858
CSH Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Time-of-check Time-of-use (TOCTOU) Race Condition (CVE-ID: CVE-2026-98130)
CWE-ID: CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
CVSSv4: 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]
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.
Remediation
Install update from vendor's website.