Security News > 2021 > January > Windows 10 NTFS corruption bug gets unofficial temporary fix

Developers have released an unofficial fix for a Windows bug that could lead to the corruption of an NTFS volume by merely viewing a specially crafted file.

Earlier this month, BleepingComputer reported that a Windows 10 bug was discovered by security researcher Jonas Lykkegaard that allows non-privileged users to mark an NTFS volume as dirty.

Once the volume is marked as dirty, Windows would display an error stating that the drive was corrupted and prompt the user to reboot the computer to run chkdsk and fix the corruption.

BleepingComputer later learned that this bug also affected older versions of Windows, including Windows XP. To make matters worse, BleepingComputer created a specially crafted file that would automatically trigger the bug when you attempt to access it in Windows.

OSR, a software development company specializing in Windows internals, has released an open-source filter driver that prevents the NTFS bug from being abused while waiting for an official fix from Microsoft.

As illustrated below, if the bug is not fixed and you uninstall the driver, the bug can instantly be used to mark a drive as corrupted.

News URL

https://www.bleepingcomputer.com/news/microsoft/windows-10-ntfs-corruption-bug-gets-unofficial-temporary-fix/