FKIE_CVE-2026-98782

Vulnerability from fkie_nvd - Published: 2026-10-18 16:17 - Updated: 2026-10-21 13:21
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/mediatek: Fix ovl adaptor platform device leak mtk_drm_probe() creates an OVL adaptor platform device with platform_device_register_data() when the display pipeline requires the OVL adaptor. If a later initialization step fails, the probe error path releases the DRM resources without unregistering the already registered OVL adaptor device. The normal remove path likewise leaves the device registered after the DRM driver is unbound. Keep track of whether the OVL adaptor was successfully registered and unregister it on probe failure. Also recover the platform device from the stored DDP component device and unregister it during normal removal. The issue was identified by a static analysis tool I developed and confirmed by manual review.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/03fb1c657028cb9f189b400f3adb46e3ba676aa5
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/048739be3e9cacae5301b68245668002fe6f0ce5
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3d85bd738aba61df14dfaf8fe638e2172d8427bf
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/629458b7e49559593823e351535294db17331be7
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8e3a350075b556f2fed4517705935bfee4529fb6
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/mediatek/mtk_drm_drv.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "03fb1c657028cb9f189b400f3adb46e3ba676aa5",
              "status": "affected",
              "version": "0d9eee9118b77e51eeafc5bf4d008fac97035d56",
              "versionType": "git"
            },
            {
              "lessThan": "3d85bd738aba61df14dfaf8fe638e2172d8427bf",
              "status": "affected",
              "version": "0d9eee9118b77e51eeafc5bf4d008fac97035d56",
              "versionType": "git"
            },
            {
              "lessThan": "629458b7e49559593823e351535294db17331be7",
              "status": "affected",
              "version": "0d9eee9118b77e51eeafc5bf4d008fac97035d56",
              "versionType": "git"
            },
            {
              "lessThan": "8e3a350075b556f2fed4517705935bfee4529fb6",
              "status": "affected",
              "version": "0d9eee9118b77e51eeafc5bf4d008fac97035d56",
              "versionType": "git"
            },
            {
              "lessThan": "048739be3e9cacae5301b68245668002fe6f0ce5",
              "status": "affected",
              "version": "0d9eee9118b77e51eeafc5bf4d008fac97035d56",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/mediatek/mtk_drm_drv.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.4"
            },
            {
              "lessThan": "6.4",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.160",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.113",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.56",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/mediatek: Fix ovl adaptor platform device leak\n\nmtk_drm_probe() creates an OVL adaptor platform device with\nplatform_device_register_data() when the display pipeline requires the\nOVL adaptor.\n\nIf a later initialization step fails, the probe error path releases\nthe DRM resources without unregistering the already registered OVL\nadaptor device. The normal remove path likewise leaves the device\nregistered after the DRM driver is unbound.\n\nKeep track of whether the OVL adaptor was successfully registered and\nunregister it on probe failure. Also recover the platform device from\nthe stored DDP component device and unregister it during normal\nremoval.\n\nThe issue was identified by a static analysis tool I developed and\nconfirmed by manual review."
    }
  ],
  "id": "CVE-2026-98782",
  "lastModified": "2026-10-21T13:21:46.290",
  "metrics": {},
  "published": "2026-10-18T16:17:32.163",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/03fb1c657028cb9f189b400f3adb46e3ba676aa5"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/048739be3e9cacae5301b68245668002fe6f0ce5"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/3d85bd738aba61df14dfaf8fe638e2172d8427bf"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/629458b7e49559593823e351535294db17331be7"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/8e3a350075b556f2fed4517705935bfee4529fb6"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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