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25/09/2025
Zero-Day Initiative

ZDI-25-916: Linux Kernel ksmbd smb2_sess_setup Preauth_HashValue Race Condition Remote Code Execution Vulnerability

by Deepanshu Jha
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Linux Kernel. Authentication is required to exploit this vulnerability. The ZDI has assigned a CVSS rating of 8.5. The following CVEs are assigned: CVE-2025-38561.
  • Next ZDI-25-917: Linux Kernel ksmbd generate_key context.iov_base Null Pointer Dereference Denial-of-Service Vulnerability
  • Previous ZDI-25-915: Linux Kernel io_uring Futex Request Use-After-Free Local Privilege Escalation Vulnerability

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