Use of Uninitialized Variable in Linux kernel - CVE-2026-97568
Published: September 28, 2026
Vulnerability identifier: #VU152640
CSH Severity: Low
CVSS v4: 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]
CVE-ID: CVE-2026-97568
CWE-ID: CWE-457
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
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.
Affected software
Linux kernel
How to mitigate CVE-2026-97568
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3