Linux Kernel CIFS Integer Overflow Vulnerability in acdirmax Mount Option

An integer overflow vulnerability has been identified in the Linux kernel's CIFS (Common Internet File System) implementation. This issue arises when processing the user-provided mount parameter 'acdirmax', which is of type u32. The parameter is intended to have an upper limit, but it is converted from seconds to jiffies without proper validation. This conversion can lead to an integer overflow.

Impact

Exploitation of this vulnerability can cause an integer overflow, which may lead to undefined behavior such as memory corruption or allowing for arbitrary code execution.