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.

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History

Fri, 25 Sep 2026 14:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-200

Fri, 25 Sep 2026 10:30:00 +0000

Type Values Removed Values Added
Description 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.
Title vduse: return compat ioctl results directly
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-09-25T10:23:18.940Z

Reserved: 2026-09-25T10:18:58.208Z

Link: CVE-2026-97983

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-25T11:17:26.340

Modified: 2026-09-25T11:17:26.340

Link: CVE-2026-97983

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-25T14:30:14Z

Weaknesses