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CVE-2026-97568

Unknown

Last modified

CVE-2026-97568 is a vulnerability of currently unknown severity. 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..

Description

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.

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= efd340bf3d7779a3a8ec954d8ec0fb8a10f24982, < 61178d0b85b4b1b53e78b06e89d018d22d102f88; >= efd340bf3d7779a3a8ec954d8ec0fb8a10f24982, < 00b2bd518911e0daab00f4749cce68c191ccebb4; >= efd340bf3d7779a3a8ec954d8ec0fb8a10f24982, < 06d649f9cd03a9f8e768a658b20acf8d2c8022e0; >= efd340bf3d7779a3a8ec954d8ec0fb8a10f24982, < b76c0e28b392620dfbaf92cdeedbf115820b44cb; 1008f2bcbc8e461c1df3aebba30ac4f616ebe570; 6f01f41b6a492ddf2da7609967cfaf57e7ca48a7; 09176f80995105c62939728fbad5c437d61e7ff4; 8ed3e34c766e8264d5d2e0436f86c51604d6a8a7; 73e2baa301ee3f62ff971e68877adeb37f98cc67; >= 5.10.224, < 5.11; >= 5.15.165, < 5.16; >= 6.1.104, < 6.2; >= 6.6.45, < 6.7; >= 6.10.4, < 6.11
LinuxLinux6.11

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-97568?
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.
How severe is CVE-2026-97568?
Severity scoring for CVE-2026-97568 is pending analysis.
How do I fix CVE-2026-97568?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST