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

Type: advisorySource: Official CVE List1 source record

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.

Announced Source revision 1
Original source ↗

CVE-2026-45956

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-45956

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322",
        "lessThan": "2987642c5213508c6c9e718324c0d5289a92c474",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322",
        "lessThan": "65d1213baffa363f2eb1117b1dc7acc573b890f8",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322",
        "lessThan": "875fa28690e93ed5296c31d3344556c6bb867234",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322",
        "lessThan": "21ca24ba51a2c28bcc4df9d7e5a40b0eb66ab76d",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322",
        "lessThan": "e1aed617eb80b49eac2f8c7bb7a0990f641dd59b",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322",
        "lessThan": "b5fc86d753dd4c281a943b92f0eef02d31af03d7",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322",
        "lessThan": "a540f767642f75240a6c35f6a65b69e44cfcea9d",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322",
        "lessThan": "d3968a0d85b211e197f2f4f06268a7031079e0d0",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/gpu/drm/exynos/exynos_drm_drv.h",
      "drivers/gpu/drm/exynos/exynos_drm_vidi.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "4.3"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "4.3",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.253",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.203",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.167",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.130",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.114",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.14",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "6.19.4",
        "versionType": "semver",
        "lessThanOrEqual": "6.19.*"
      },
      {
        "status": "unaffected",
        "version": "7.0",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/gpu/drm/exynos/exynos_drm_drv.h",
      "drivers/gpu/drm/exynos/exynos_drm_vidi.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-45956

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#46316 · Revision 1
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Publisher date
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