Kernel Filesystem Vulnerability in Linux Kernel by Linux Vendor

CVE-2026-63810

What is CVE-2026-63810?

A vulnerability exists in the Linux kernel related to the bdev pseudo-filesystem, which is intended to remain inaccessible to userspace. This flaw allows unauthorized mounting attempts of the bdev pseudo-filesystem, potentially leading to system instability and crashes. The kernel's move_mount() system call fails when accessing these files due to constant pointer values, hence resolving the issue by unregistering the bdev filesystem effectively mitigates any risk of exploitation.

References