CyberRota Analysis
AI-GeneratedThe vulnerability affects the Linux kernel's SMB2 client implementation, allowing it to improperly handle overlapping data areas in SMB2 responses. This flaw can lead to potential data corruption or unauthorized access, posing a critical risk to systems utilizing SMB for file sharing. Organizations running Linux systems that rely on SMB2 should prioritize patching to mitigate this significant security threat.
Original NVD Description
In the Linux kernel, the following vulnerability has been resolved: smb: client: reject overlapping data areas in SMB2 responses Commit 53b7c271f06b ("smb: client: restrict implied bcc[0] exemption to responses without data area") restricted the implied bcc[0] length exception to responses without a data area. However, the overlap handling in __smb2_calc_size() clears data_length, which can make an invalid response appear to have no data area and so qualify for the exception. Track data area overlap separately and reject such responses before applying the length compatibility exceptions.
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