CVE-2026-97568 in Linux

Résumé

par MITRE • 25/09/2026

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.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

• Responsable: Linux
• Réserver: 24/09/2026
• Divulgation: 25/09/2026
• Modérer: accepté
• Entrée: VDB-410040
• CPE: prêt
• CWE: CWE-662 (confirmé)
• CVSS: 10.0 (VulDB)
• EPSS: 0.00000
• KEV: non
• Activités: très faible
• Secteur: Lawfirm, Police, ...

Sources

• MITRE: https://www.cve.org/CVERecord?id=CVE-2026-97568
• NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-97568
• CVE Details: https://www.cvedetails.com/cve/CVE-2026-97568/