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CVE-2026-93136 (GCVE-0-2026-93136)

Vulnerability from cvelistv5 – Published: 2026-09-17 16:11 – Updated: 2026-09-17 16:11
VLAI
Title
bus: mhi: ep: Fix device refcount leak in the error path of MHI device creation
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().
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 297c77a0f27312b9a04696018c4cbd47926ca92b , < 8acc3813ab5015af73eeb74c9032443162f122d1 (git)
Affected: 297c77a0f27312b9a04696018c4cbd47926ca92b , < 51ddb831a36102fd0ea25f354935e49abce9f0a1 (git)
Affected: 297c77a0f27312b9a04696018c4cbd47926ca92b , < 4fae8fd4adc7f4765463ddeb1a5fad23936432f6 (git)
Affected: 297c77a0f27312b9a04696018c4cbd47926ca92b , < 5587e7871ce994bb079f97fe7e430d99627e5292 (git)
Affected: 297c77a0f27312b9a04696018c4cbd47926ca92b , < 8f3f64faee335eb678fd7dca7b95dfe3d0b271fd (git)
Affected: 297c77a0f27312b9a04696018c4cbd47926ca92b , < 6f12862600bb70e599a614d706a095ea5f8f9858 (git)
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Linux Linux Affected: 5.19
Unaffected: 0 , < 5.19 (semver)
Unaffected: 6.1.188 , ≤ 6.1.* (semver)
Unaffected: 6.6.157 , ≤ 6.6.* (semver)
Unaffected: 6.12.110 , ≤ 6.12.* (semver)
Unaffected: 6.18.52 , ≤ 6.18.* (semver)
Unaffected: 7.2.6 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)
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{
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          "product": "Linux",
          "programFiles": [
            "drivers/bus/mhi/ep/main.c"
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              "versionType": "semver"
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              "status": "unaffected",
              "version": "6.18.52",
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              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
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              "cpeMatch": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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              "operator": "OR"
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      "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()."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-17T16:11:37.459Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/8acc3813ab5015af73eeb74c9032443162f122d1"
        },
        {
          "url": "https://git.kernel.org/stable/c/51ddb831a36102fd0ea25f354935e49abce9f0a1"
        },
        {
          "url": "https://git.kernel.org/stable/c/4fae8fd4adc7f4765463ddeb1a5fad23936432f6"
        },
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        },
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          "url": "https://git.kernel.org/stable/c/8f3f64faee335eb678fd7dca7b95dfe3d0b271fd"
        },
        {
          "url": "https://git.kernel.org/stable/c/6f12862600bb70e599a614d706a095ea5f8f9858"
        }
      ],
      "title": "bus: mhi: ep: Fix device refcount leak in the error path of MHI device creation",
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-93136",
    "datePublished": "2026-09-17T16:11:37.459Z",
    "dateReserved": "2026-09-17T16:02:15.087Z",
    "dateUpdated": "2026-09-17T16:11:37.459Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
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  }
}



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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.
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  • 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.


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Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.