SB20260928369 - Use of Uninitialized Variable in Linux kernel mptcp
Published: September 28, 2026 Updated: September 30, 2026
Security Bulletin ID
SB20260928369
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Use of Uninitialized Variable (CVE-ID: CVE-2026-97568)
CWE-ID: CWE-457 - Use of Uninitialized Variable
CVSSv4: 0 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to cause incorrect handling of MPTCP backup state.
The vulnerability exists due to use of an uninitialized variable in MPTCP syncookie state handling when copying MPTCP subflow information. A remote attacker can trigger copying of MPTCP subflow information to cause incorrect handling of MPTCP backup state.
Remediation
Install update from vendor's website.