A vulnerability has been reported in the Linux Kernel, which can be exploited by malicious people to cause a DoS (Denial of Service).
The vulnerability is caused due to a signedness error within the "CIFSFindNext()" function (fs/cifs/cifssmb.c), which can be exploited to e.g. crash a client by sending specially crafted CIFS messages.
Successful exploitation requires that a malicious server is used.
Solution: Fixed in version 22.214.171.124 and 126.96.36.199.
Provided and/or discovered by: Red Hat credits Darren Lavender.
Original Advisory: https://patchwork.kernel.org/patch/1088082/
Red Hat Bug #732869:
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Subject: Linux Kernel "CIFSFindNext()" Signedness Error Denial of Service Vulnerability
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