Vulnerability-Lookup

GHSA-2H6G-JF6M-CH5Q

Vulnerability from github – Published: 2026-05-08 15:31 – Updated: 2026-05-18 15:30

Details

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

5.5 (Medium)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2026-43343"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-08T14:16:44Z",
    "severity": "MODERATE"
  },
  "details": "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.",
  "id": "GHSA-2h6g-jf6m-ch5q",
  "modified": "2026-05-18T15:30:32Z",
  "published": "2026-05-08T15:31:24Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43343"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/23e4851ce348a329d974e84e828155dda9f52122"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3d436670b47415da042452618fb5d8e317ab095f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3f5bfc550a40d7493b1cf09540ed6b412b3b82be"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/75776a055b656873319c3830fed471daef3ceb23"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a932b171554714b1bca313b853c7aa9f2930f9aa"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/caa27923aacd8a5869207842f2ab1657c6c0c7bc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cc8ec610cd14c093a19371691a7ce1ee5421e829"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d7d702407b61e96286a15b6e715572f541a8d41c"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

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

Vulnerability from cvelistv5 – Published: 2026-05-08 13:37 – Updated: 2026-05-11 22:22

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

Linux

References

8 references

URL	Tags
https://git.kernel.org/stable/c/a932b171554714b1b…
https://git.kernel.org/stable/c/d7d702407b61e9628…
https://git.kernel.org/stable/c/3f5bfc550a40d7493…
https://git.kernel.org/stable/c/75776a055b6568733…
https://git.kernel.org/stable/c/cc8ec610cd14c093a…
https://git.kernel.org/stable/c/3d436670b47415da0…
https://git.kernel.org/stable/c/23e4851ce348a329d…
https://git.kernel.org/stable/c/caa27923aacd8a586…

Impacted products

2 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)
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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          "programFiles": [
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      "cpeApplicability": [
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          "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."
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    "datePublished": "2026-05-08T13:37:20.663Z",
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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.

Action not permitted

GHSA-2H6G-JF6M-CH5Q

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

Tags

Sightings

Nomenclature