---
id: CVE-2026-45956
title: 'drm/exynos: vidi: use priv->vidi_dev for ctx lookup in vidi_connection_ioctl()'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  drm/exynos: vidi: use priv->vidi_dev for ctx lookup in vidi_connection_ioctl()

  vidi_connection_ioctl() retrieves the driver_data from drm_dev->dev to
  obtain a struct v…
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cvssSource: cna
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 <
    2987642c5213508c6c9e718324c0d5289a92c474
  - >-
    Linux >= cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 <
    65d1213baffa363f2eb1117b1dc7acc573b890f8
  - >-
    Linux >= cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 <
    875fa28690e93ed5296c31d3344556c6bb867234
  - >-
    Linux >= cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 <
    21ca24ba51a2c28bcc4df9d7e5a40b0eb66ab76d
  - >-
    Linux >= cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 <
    e1aed617eb80b49eac2f8c7bb7a0990f641dd59b
  - >-
    Linux >= cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 <
    b5fc86d753dd4c281a943b92f0eef02d31af03d7
  - >-
    Linux >= cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 <
    a540f767642f75240a6c35f6a65b69e44cfcea9d
  - >-
    Linux >= cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 <
    d3968a0d85b211e197f2f4f06268a7031079e0d0
  - Linux 4.3
published: '2026-05-27'
updated: '2026-10-21'
sourceUpdated: '2026-10-21T12:41:06.321Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-45956'
references:
  - url: 'https://git.kernel.org/stable/c/2987642c5213508c6c9e718324c0d5289a92c474'
  - url: 'https://git.kernel.org/stable/c/65d1213baffa363f2eb1117b1dc7acc573b890f8'
  - url: 'https://git.kernel.org/stable/c/875fa28690e93ed5296c31d3344556c6bb867234'
  - url: 'https://git.kernel.org/stable/c/21ca24ba51a2c28bcc4df9d7e5a40b0eb66ab76d'
  - url: 'https://git.kernel.org/stable/c/e1aed617eb80b49eac2f8c7bb7a0990f641dd59b'
  - url: 'https://git.kernel.org/stable/c/b5fc86d753dd4c281a943b92f0eef02d31af03d7'
  - url: 'https://git.kernel.org/stable/c/a540f767642f75240a6c35f6a65b69e44cfcea9d'
  - url: 'https://git.kernel.org/stable/c/d3968a0d85b211e197f2f4f06268a7031079e0d0'
tags:
  - cve.org
epss: 0.00171
epssPercentile: 0.06102
ingestedAt: '2026-10-21T12:48:53.632Z'
---

## Overview

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

drm/exynos: vidi: use priv->vidi_dev for ctx lookup in vidi_connection_ioctl()

vidi_connection_ioctl() retrieves the driver_data from drm_dev->dev to
obtain a struct vidi_context pointer. However, drm_dev->dev is the
exynos-drm master device, and the driver_data contained therein is not
the vidi component device, but a completely different device.

This can lead to various bugs, ranging from null pointer dereferences and
garbage value accesses to, in unlucky cases, out-of-bounds errors,
use-after-free errors, and more.

To resolve this issue, we need to store/delete the vidi device pointer in
exynos_drm_private->vidi_dev during bind/unbind, and then read this
exynos_drm_private->vidi_dev within ioctl() to obtain the correct
struct vidi_context pointer.

## Affected

- `Linux >= cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 < 2987642c5213508c6c9e718324c0d5289a92c474`
- `Linux >= cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 < 65d1213baffa363f2eb1117b1dc7acc573b890f8`
- `Linux >= cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 < 875fa28690e93ed5296c31d3344556c6bb867234`
- `Linux >= cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 < 21ca24ba51a2c28bcc4df9d7e5a40b0eb66ab76d`
- `Linux >= cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 < e1aed617eb80b49eac2f8c7bb7a0990f641dd59b`
- `Linux >= cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 < b5fc86d753dd4c281a943b92f0eef02d31af03d7`
- `Linux >= cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 < a540f767642f75240a6c35f6a65b69e44cfcea9d`
- `Linux >= cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 < d3968a0d85b211e197f2f4f06268a7031079e0d0`
- `Linux 4.3`

## Remediation

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