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CVE-2026-45956

📛 CVE Title

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

⬇ Download JSON ⚠ View as Threat

Description

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.

Overview

State
PUBLISHED
Assigner (CNA)
Linux
CVSS severity
high
CVSS score
CVSS 7.8 / 10 7.8 7.8 / 10
CVSS vector
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Effective score
7.8 / 10 HIGH source: CNA overview
MSRC score
7.1 / 10 HIGH MS rating: Important
CWE(s)
—
Reserved
2026-05-13
Published
2026-05-27 12:18 UTC
Last updated
2026-05-30 10:41 UTC
Source
https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/45xxx/CVE-2026-45956.json
Linked Threat
CVE-2026-45956 — CVE-2026-45956

NVD triage scoring NVD CVE 2.0

Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.

NVD published
2026-05-27 14:17:12 UTC
NVD last modified
2026-06-17 10:52:47 UTC
NVD CVSS v3.1
CVSS 7.8 / 10 7.8 7.8 / 10 HIGH source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
NVD CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Exploitability subscore
1.8 / 10
Impact subscore
5.9 / 10
EPSS score
0.0013 (probability of exploitation in next 30 days)
EPSS percentile
2.64% vs all CVEs — higher = more likely to be exploited, as of 2026-08-01

NVD-assigned CWE(s): CWE-416 (differs from the CNA list above)

NVD / KEV / EPSS data refreshed 2026-08-01 17:12 UTC. Re-run the 🛰 Backfill from NVD button above to refresh.

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID
EUVD-2026-32240
Assigner
Linux
Published
May 27, 2026, 12:18:11 PM
Updated
Jun 5, 2026, 6:06:12 AM
EUVD base score (CVSS 3.1)
7.8 / 10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EUVD-reported EPSS
0.1300
Vendors
Linux
Products
Linux (patch: 7.0)
Linux (patch: 0)
Linux (cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 <d3968a0d85b211e197f2f4f06268a7031079e0d0)
Linux (patch: 5.10.253)
Linux (cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 <65d1213baffa363f2eb1117b1dc7acc573b890f8)
Linux (patch: 6.19.4)
Linux (patch: 6.18.14)
Linux (patch: 6.1.167)
Linux (patch: 6.6.130)
Linux (cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 <2987642c5213508c6c9e718324c0d5289a92c474)
Linux (cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 <21ca24ba51a2c28bcc4df9d7e5a40b0eb66ab76d)
Linux (4.3)
Linux (cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 <b5fc86d753dd4c281a943b92f0eef02d31af03d7)
Linux (patch: 5.15.203)
Linux (cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 <a540f767642f75240a6c35f6a65b69e44cfcea9d)
Linux (cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 <875fa28690e93ed5296c31d3344556c6bb867234)
Aliases
GHSA-pwfh-32f2-c83x

ENISA description: 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.

EUVD references (7)

Microsoft Security Response Center MSRC

Microsoft's vendor-authoritative record from the Security Update Guide — its own CVSS score, impact, severity rating, exploit assessment, and KB-article fixes. Refreshed 2026-08-12 01:09 UTC (source: CVRF).

MS severity
Important
MS CVSS base score
7.1 / 10 (temporal 7.1)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Release
2026-May

Affected products (2)
VendorProductVersionsPlatforms
Linux Linux cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 (affected), cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 (affected), cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 (affected), cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 (affected), cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 (affected), cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 (affected), cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 (affected) —
Linux Linux 4.3 (affected), 0 (unaffected), 5.10.253 (unaffected), 5.15.203 (unaffected), 6.1.167 (unaffected), 6.6.130 (unaffected), 6.18.14 (unaffected), 6.19.4 (unaffected), 7.0 (unaffected) —

Affected products — CPE 2.3 (1) NVD

NVD's normalized CPE 2.3 matchers, used by vendor tools (vulnerability scanners, asset managers) for automated detection. Compare with the CNA's free-text "Affected products" section above.

  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Vendor references (7)

References embedded in the original CVE record by the assigning CNA.

Web references (11)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

NVD-tagged references (7)

Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.

Remediations (20)

Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.

AI Forensic Analysis

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Raw JSON

The full cvelistV5 record. Download as CVE-2026-45956.json.

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/exynos/exynos_drm_drv.h",
            "drivers/gpu/drm/exynos/exynos_drm_vidi.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
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              "status": "affected",
              "version": "cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322",
              "versionType": "git"
            },
            {
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              "versionType": "git"
            },
            {
              "lessThan": "875fa28690e93ed5296c31d3344556c6bb867234",
              "status": "affected",
              "version": "cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322",
              "versionType": "git"
            },
            {
              "lessThan": "21ca24ba51a2c28bcc4df9d7e5a40b0eb66ab76d",
              "status": "affected",
              "version": "cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322",
              "versionType": "git"
            },
            {
              "lessThan": "b5fc86d753dd4c281a943b92f0eef02d31af03d7",
              "status": "affected",
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              "versionType": "git"
            },
            {
              "lessThan": "a540f767642f75240a6c35f6a65b69e44cfcea9d",
              "status": "affected",
              "version": "cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322",
              "versionType": "git"
            },
            {
              "lessThan": "d3968a0d85b211e197f2f4f06268a7031079e0d0",
              "status": "affected",
              "version": "cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/exynos/exynos_drm_drv.h",
            "drivers/gpu/drm/exynos/exynos_drm_vidi.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.3"
            },
            {
              "lessThan": "4.3",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.253",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.203",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.167",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.130",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.14",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.253",
                  "versionStartIncluding": "4.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.203",
                  "versionStartIncluding": "4.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.167",
                  "versionStartIncluding": "4.3",
                  "vulnerable": true
                },
                {
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                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.14",
                  "versionStartIncluding": "4.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0",
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                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/exynos: vidi: use priv->vidi_dev for ctx lookup in vidi_connection_ioctl()\n\nvidi_connection_ioctl() retrieves the driver_data from drm_dev->dev to\nobtain a struct vidi_context pointer. However, drm_dev->dev 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->vidi_dev during bind/unbind, and then read this\nexynos_drm_private->vidi_dev within ioctl() to obtain the correct\nstruct vidi_context pointer."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-30T10:41:50.860Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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        {
          "url": "https://git.kernel.org/stable/c/a540f767642f75240a6c35f6a65b69e44cfcea9d"
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        {
          "url": "https://git.kernel.org/stable/c/d3968a0d85b211e197f2f4f06268a7031079e0d0"
        }
      ],
      "title": "drm/exynos: vidi: use priv->vidi_dev for ctx lookup in vidi_connection_ioctl()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-45956",
    "datePublished": "2026-05-27T12:18:11.972Z",
    "dateReserved": "2026-05-13T15:03:33.088Z",
    "dateUpdated": "2026-05-30T10:41:50.860Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}