Vulnerability-Lookup

GHSA-PWFH-32F2-C83X

Vulnerability from github – Published: 2026-05-27 15:33 – Updated: 2026-05-27 15:33

Details

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.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-45956"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-27T14:17:12Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/exynos: vidi: use priv-\u003evidi_dev for ctx lookup in vidi_connection_ioctl()\n\nvidi_connection_ioctl() retrieves the driver_data from drm_dev-\u003edev to\nobtain a struct vidi_context pointer. However, drm_dev-\u003edev is the\nexynos-drm master device, and the driver_data contained therein is not\nthe vidi component device, but a completely different device.\n\nThis can lead to various bugs, ranging from null pointer dereferences and\ngarbage value accesses to, in unlucky cases, out-of-bounds errors,\nuse-after-free errors, and more.\n\nTo resolve this issue, we need to store/delete the vidi device pointer in\nexynos_drm_private-\u003evidi_dev during bind/unbind, and then read this\nexynos_drm_private-\u003evidi_dev within ioctl() to obtain the correct\nstruct vidi_context pointer.",
  "id": "GHSA-pwfh-32f2-c83x",
  "modified": "2026-05-27T15:33:18Z",
  "published": "2026-05-27T15:33:18Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-45956"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/21ca24ba51a2c28bcc4df9d7e5a40b0eb66ab76d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2987642c5213508c6c9e718324c0d5289a92c474"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/65d1213baffa363f2eb1117b1dc7acc573b890f8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/875fa28690e93ed5296c31d3344556c6bb867234"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a540f767642f75240a6c35f6a65b69e44cfcea9d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b5fc86d753dd4c281a943b92f0eef02d31af03d7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d3968a0d85b211e197f2f4f06268a7031079e0d0"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-45956 (GCVE-0-2026-45956)

Vulnerability from cvelistv5 – Published: 2026-05-27 12:18 – Updated: 2026-05-27 12:18

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 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.

Severity

No CVSS data available.

Assigner

Linux

References

7 references

URL	Tags
https://git.kernel.org/stable/c/2987642c5213508c6…
https://git.kernel.org/stable/c/65d1213baffa363f2…
https://git.kernel.org/stable/c/875fa28690e93ed52…
https://git.kernel.org/stable/c/21ca24ba51a2c28bc…
https://git.kernel.org/stable/c/b5fc86d753dd4c281…
https://git.kernel.org/stable/c/a540f767642f75240…
https://git.kernel.org/stable/c/d3968a0d85b211e19…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 2987642c5213508c6c9e718324c0d5289a92c474 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 65d1213baffa363f2eb1117b1dc7acc573b890f8 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 875fa28690e93ed5296c31d3344556c6bb867234 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 21ca24ba51a2c28bcc4df9d7e5a40b0eb66ab76d (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < b5fc86d753dd4c281a943b92f0eef02d31af03d7 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < a540f767642f75240a6c35f6a65b69e44cfcea9d (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < d3968a0d85b211e197f2f4f06268a7031079e0d0 (git) Affected: 0 , < 5.10.253 (semver) Affected: 0 , < 5.15.203 (semver) Affected: 0 , < 6.1.167 (semver) Affected: 0 , < 6.6.130 (semver) Affected: 0 , < 6.18.14 (semver) Affected: 0 , < 6.19.4 (semver)
Linux	Linux	Unaffected: 5.10.253 , ≤ 5.10.* (semver) Unaffected: 5.15.203 , ≤ 5.15.* (semver) Unaffected: 6.1.167 , ≤ 6.1.* (semver) Unaffected: 6.6.130 , ≤ 6.6.* (semver) Unaffected: 6.18.14 , ≤ 6.18.* (semver) Unaffected: 6.19.4 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

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              "versionType": "semver"
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              "status": "affected",
              "version": "0",
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            {
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              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        },
        {
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          "product": "Linux",
          "programFiles": [
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          ],
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          "vendor": "Linux",
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            {
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              "status": "unaffected",
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              "status": "unaffected",
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              "versionType": "semver"
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              "status": "unaffected",
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              "versionType": "semver"
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      "title": "drm/exynos: vidi: use priv-\u003evidi_dev for ctx lookup in vidi_connection_ioctl()",
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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-PWFH-32F2-C83X

CVE-2026-45956 (GCVE-0-2026-45956)

Tags

Sightings

Nomenclature