CVE-2026-43343 (GCVE-0-2026-43343)

Vulnerability from cvelistv5 – Published: 2026-05-08 13:37 – Updated: 2026-05-08 13:37
VLAI?
Title
usb: gadget: f_subset: Fix unbalanced refcnt in geth_free
Summary
In the Linux kernel, the following vulnerability has been resolved: usb: gadget: f_subset: Fix unbalanced refcnt in geth_free geth_alloc() increments the reference count, but geth_free() fails to decrement it. This prevents the configuration of attributes via configfs after unlinking the function. Decrement the reference count in geth_free() to ensure proper cleanup.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 02832e56f88a981474ee4c7c141f46fc1b4454f4 , < a932b171554714b1bca313b853c7aa9f2930f9aa (git)
Affected: 02832e56f88a981474ee4c7c141f46fc1b4454f4 , < d7d702407b61e96286a15b6e715572f541a8d41c (git)
Affected: 02832e56f88a981474ee4c7c141f46fc1b4454f4 , < 3f5bfc550a40d7493b1cf09540ed6b412b3b82be (git)
Affected: 02832e56f88a981474ee4c7c141f46fc1b4454f4 , < 75776a055b656873319c3830fed471daef3ceb23 (git)
Affected: 02832e56f88a981474ee4c7c141f46fc1b4454f4 , < cc8ec610cd14c093a19371691a7ce1ee5421e829 (git)
Affected: 02832e56f88a981474ee4c7c141f46fc1b4454f4 , < 3d436670b47415da042452618fb5d8e317ab095f (git)
Affected: 02832e56f88a981474ee4c7c141f46fc1b4454f4 , < 23e4851ce348a329d974e84e828155dda9f52122 (git)
Affected: 02832e56f88a981474ee4c7c141f46fc1b4454f4 , < caa27923aacd8a5869207842f2ab1657c6c0c7bc (git)
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    Linux Linux Affected: 3.11
Unaffected: 0 , < 3.11 (semver)
Unaffected: 5.10.253 , ≤ 5.10.* (semver)
Unaffected: 5.15.203 , ≤ 5.15.* (semver)
Unaffected: 6.1.168 , ≤ 6.1.* (semver)
Unaffected: 6.6.134 , ≤ 6.6.* (semver)
Unaffected: 6.12.81 , ≤ 6.12.* (semver)
Unaffected: 6.18.22 , ≤ 6.18.* (semver)
Unaffected: 6.19.12 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
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{
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          "product": "Linux",
          "programFiles": [
            "drivers/usb/gadget/function/f_subset.c"
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: f_subset: Fix unbalanced refcnt in geth_free\n\ngeth_alloc() increments the reference count, but geth_free() fails to\ndecrement it. This prevents the configuration of attributes via configfs\nafter unlinking the function.\n\nDecrement the reference count in geth_free() to ensure proper cleanup."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-08T13:37:20.663Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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    "dateReserved": "2026-05-01T14:12:56.003Z",
    "dateUpdated": "2026-05-08T13:37:20.663Z",
    "state": "PUBLISHED"
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  }
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.