---
id: CVE-2026-97983
title: |-
  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
summary: |-
  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 com…
severity: medium
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 455a2a1af92651764e9eb42cec0d95ac142afc28 <
    135ac58097fa5fc707bf392c5cececf59e4080c0
  - >-
    Linux >= 455a2a1af92651764e9eb42cec0d95ac142afc28 <
    48a4ee65e677559776349128e6a81a6041986c99
  - Linux 7dd28904c42ee3b0728c0692dd3332c2c83e8f33
  - Linux >= 7.1.5 < 7.2
  - Linux 7.2
published: '2026-09-25'
updated: '2026-09-25'
sourceUpdated: '2026-09-25T11:17:26.340'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-97983'
references:
  - url: 'https://git.kernel.org/stable/c/135ac58097fa5fc707bf392c5cececf59e4080c0'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/48a4ee65e677559776349128e6a81a6041986c99'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-97983.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-97983'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2541170'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-97983'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-97983'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-97983.mbox
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
ingestedAt: '2026-09-25T11:06:38.867Z'
epss: 0.00155
epssPercentile: 0.04614
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cvssSource: vendor
cwe:
  - CWE-772
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Vendor advisories

- **Red Hat VEX** · Moderate · updated 2026-09-30 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-97983.json)