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

Vulnerability from cvelistv5 – Published: 2026-09-17 16:11 – Updated: 2026-10-19 09:06
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
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7033 records in the last 180 days details
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)
guessed Create a notification for this product.
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 , ≤ * (original_commit_for_fix)
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        "metrics": {},
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      "cve": "CVE-2026-93136",
      "id": "CVE-2026-93136",
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      "product_status:known_affected": "76",
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      "source": "Red Hat CSAF VEX",
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      "title": "kernel: bus: mhi: ep: Fix device refcount leak in the error path of MHI device creation",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-93136.json",
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      "cve": "CVE-2026-93136",
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}



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