Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: ksmbd: smbdirect: validate the dataoffset and datalength fields of the smbdirectdatatransfer structure. If the dataoffset and datalength fields of the smbdirectdatatransfer structure are invalid, an out-of-bounds issue may occur...

ksmbd: smbdirect: validate data_offset and data_length field of smb_direct_data_transfer

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CVE-2025-39943

CVE-2025-39943 affects the Linux kernel’s ksmbd smb_direct_data_transfer path. The vulnerability arises if data_offset or data_length in smb_direct_data_transfer are invalid, enabling an out-of-bounds condition. The cited patch adds validation in recv_done to guard against invalid offsets/lengths...