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GHSA-4W2P-3V8X-M8HH

Vulnerability from github – Published: 2026-09-17 18:32 – Updated: 2026-09-17 18:32

Details

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().

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{
  "affected": [],
  "aliases": [
    "CVE-2026-93136"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-17T17:18:08Z",
    "severity": null
  },
  "details": "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": "GHSA-4w2p-3v8x-m8hh",
  "modified": "2026-09-17T18:32:11Z",
  "published": "2026-09-17T18:32:11Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-93136"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4fae8fd4adc7f4765463ddeb1a5fad23936432f6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/51ddb831a36102fd0ea25f354935e49abce9f0a1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5587e7871ce994bb079f97fe7e430d99627e5292"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6f12862600bb70e599a614d706a095ea5f8f9858"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8acc3813ab5015af73eeb74c9032443162f122d1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8f3f64faee335eb678fd7dca7b95dfe3d0b271fd"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

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

Vulnerability from cvelistv5 – Published: 2026-09-17 16:11 – Updated: 2026-09-17 16:11

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

Linux mitre root

References

6 references

URL	Tags
https://git.kernel.org/stable/c/8acc3813ab5015af7…
https://git.kernel.org/stable/c/51ddb831a36102fd0…
https://git.kernel.org/stable/c/4fae8fd4adc7f4765…
https://git.kernel.org/stable/c/5587e7871ce994bb0…
https://git.kernel.org/stable/c/8f3f64faee335eb67…
https://git.kernel.org/stable/c/6f12862600bb70e59…

Impacted products

2 products

Vendor	Product	Version
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)
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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              "versionType": "semver"
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        }
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          "url": "https://git.kernel.org/stable/c/6f12862600bb70e599a614d706a095ea5f8f9858"
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    "dateReserved": "2026-09-17T16:02:15.087Z",
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}

Sightings

Author	Source	Type	Date	Other

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.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
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.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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