Linux Kernel exFAT Buffer Handling Vulnerability

A vulnerability in the Linux kernel's exFAT file system implementation has been addressed. The issue arose because buffers marked as new were not properly zeroed before being written. This oversight could lead to uninitialized data in the page cache being inadvertently written. The vulnerability has been resolved by ensuring that new buffers are zeroed before the write operation.

Impact

The vulnerability could have allowed uninitialized data to be written from the page cache, potentially leading to data corruption or unintended data exposure.