CVE-2026-97983

In the Linux kernel, the following vulnerability has been resolved:

vduse: return compat ioctl results directly

The compat handler handles VDUSE IOTLB GET FD and VDUSE VQ GET INFO, but then calls the native handler. Their different command sizes make native dispatch return -ENOIOCTLCMD.

For GET FD, this overwrites receive fd()'s return value after the descriptor is installed, leaking one fd per call. Return handled compat results directly and use native dispatch only for other commands.