CVE-2025-40084 — ksmbd: transport_ipc: validate payload size before reading handle
In the Linux kernel, the following vulnerability has been resolved: ksmbd: transport_ipc: validate payload size before reading handle handle_response() dereferences the payloa…
Published: 2025-10-29 · CVSS: 7.1 · CVSS 3.1
In the Linux kernel, the following vulnerability has been resolved: ksmbd: transport_ipc: validate payload size before reading handle handle_response() dereferences the payload as a 4-byte handle without verifying that the declared payload size is at least 4 bytes. A malformed or truncated message from ksmbd.mountd can lead to a 4-byte read past the declared payload size. Validate the size before dereferencing. This is a minimal fix to guard the initial handle read.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7