CVE-2026-97568

Updated on 25 Sep 2026

Severity

4.5 Medium severity

Details

CVSS score
4.5

Overview

About vulnerability

In the Linux kernel, the following vulnerability has been resolved:

mptcp: syncookies: remember the request backup flag

Instead of using an uninitialised bit when copying the info in subflow_ulp_clone().

To fix this, no need to extend the join_entry structure: backup is coming from struct mptcp_subflow_request_sock, only one bit. Do the same here by using one bit for both.

Details

Affected product:
Debian 11 ELS
Affected packages:
linux @ 5.10.271

Fixes

KernelCare state

Live-patch status from KernelCare for each operating system.

Operating system Status Covered kernels
Debian 12 Planned —
Debian 13 Planned —