CVE-2026-63810

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description An issue exists in the bdev pseudo-filesystem, an internal kernel filesystem that should not be accessible to userspace. A kernel NULL pointer dereference occurs when userspace attempts to mount this filesystem and access files. This happens because the move mount() system call utilizes pointers from the inode operations structure, which are set to 0 for the bdev pseudo-filesystem via inode->i op = &empty iops;.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.