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FKIE_CVE-2026-93136

Vulnerability from fkie_nvd - Published: 2026-09-17 17:18 - Updated: 2026-09-17 17:18
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: bus: mhi: ep: Fix device refcount leak in the error path of MHI device creation mhi_ep_create_device() takes one device reference for the UL channel and another for the DL channel after allocating the transfer device. These references are normally released by mhi_ep_destroy_device() before the device itself is removed. If dev_set_name() or device_add() fails, the error path currently drops only one reference. The remaining channel references keep the device from being released and leave the channels associated with a device that was never registered. Route both failures through a common unwind path that drops the DL channel reference, the UL channel reference, and the initial reference from device_initialize().
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4fae8fd4adc7f4765463ddeb1a5fad23936432f6
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/51ddb831a36102fd0ea25f354935e49abce9f0a1
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5587e7871ce994bb079f97fe7e430d99627e5292
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6f12862600bb70e599a614d706a095ea5f8f9858
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8acc3813ab5015af73eeb74c9032443162f122d1
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8f3f64faee335eb678fd7dca7b95dfe3d0b271fd
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/bus/mhi/ep/main.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "8acc3813ab5015af73eeb74c9032443162f122d1",
              "status": "affected",
              "version": "297c77a0f27312b9a04696018c4cbd47926ca92b",
              "versionType": "git"
            },
            {
              "lessThan": "51ddb831a36102fd0ea25f354935e49abce9f0a1",
              "status": "affected",
              "version": "297c77a0f27312b9a04696018c4cbd47926ca92b",
              "versionType": "git"
            },
            {
              "lessThan": "4fae8fd4adc7f4765463ddeb1a5fad23936432f6",
              "status": "affected",
              "version": "297c77a0f27312b9a04696018c4cbd47926ca92b",
              "versionType": "git"
            },
            {
              "lessThan": "5587e7871ce994bb079f97fe7e430d99627e5292",
              "status": "affected",
              "version": "297c77a0f27312b9a04696018c4cbd47926ca92b",
              "versionType": "git"
            },
            {
              "lessThan": "8f3f64faee335eb678fd7dca7b95dfe3d0b271fd",
              "status": "affected",
              "version": "297c77a0f27312b9a04696018c4cbd47926ca92b",
              "versionType": "git"
            },
            {
              "lessThan": "6f12862600bb70e599a614d706a095ea5f8f9858",
              "status": "affected",
              "version": "297c77a0f27312b9a04696018c4cbd47926ca92b",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/bus/mhi/ep/main.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.19"
            },
            {
              "lessThan": "5.19",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.188",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.52",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "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\nbus: mhi: ep: Fix device refcount leak in the error path of MHI device creation\n\nmhi_ep_create_device() takes one device reference for the UL channel and\nanother for the DL channel after allocating the transfer device. These\nreferences are normally released by mhi_ep_destroy_device() before the\ndevice itself is removed.\n\nIf dev_set_name() or device_add() fails, the error path currently drops\nonly one reference. The remaining channel references keep the device\nfrom being released and leave the channels associated with a device that\nwas never registered.\n\nRoute both failures through a common unwind path that drops the DL\nchannel reference, the UL channel reference, and the initial reference\nfrom device_initialize()."
    }
  ],
  "id": "CVE-2026-93136",
  "lastModified": "2026-09-17T17:18:08.480",
  "metrics": {},
  "published": "2026-09-17T17:18:08.480",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/4fae8fd4adc7f4765463ddeb1a5fad23936432f6"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/51ddb831a36102fd0ea25f354935e49abce9f0a1"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/5587e7871ce994bb079f97fe7e430d99627e5292"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6f12862600bb70e599a614d706a095ea5f8f9858"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/8acc3813ab5015af73eeb74c9032443162f122d1"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/8f3f64faee335eb678fd7dca7b95dfe3d0b271fd"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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