CVE-2026-43343 (GCVE-0-2026-43343)
Vulnerability from cvelistv5
Published
2026-05-08 13:37
Modified
2026-05-11 22:22
Severity ?
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.
References
Impacted products
Vendor Product Version
Linux Linux Version: 02832e56f88a981474ee4c7c141f46fc1b4454f4
Version: 02832e56f88a981474ee4c7c141f46fc1b4454f4
Version: 02832e56f88a981474ee4c7c141f46fc1b4454f4
Version: 02832e56f88a981474ee4c7c141f46fc1b4454f4
Version: 02832e56f88a981474ee4c7c141f46fc1b4454f4
Version: 02832e56f88a981474ee4c7c141f46fc1b4454f4
Version: 02832e56f88a981474ee4c7c141f46fc1b4454f4
Version: 02832e56f88a981474ee4c7c141f46fc1b4454f4
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/usb/gadget/function/f_subset.c"
          ],
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          "vendor": "Linux",
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          "programFiles": [
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.11"
            },
            {
              "lessThan": "3.11",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.253",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.203",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.168",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.134",
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            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.81",
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            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.22",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.12",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "versionStartIncluding": "3.11",
                  "vulnerable": true
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                {
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                  "versionEndExcluding": "5.15.203",
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                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "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": "2026-05-11T22:22:44.192Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/a932b171554714b1bca313b853c7aa9f2930f9aa"
        },
        {
          "url": "https://git.kernel.org/stable/c/d7d702407b61e96286a15b6e715572f541a8d41c"
        },
        {
          "url": "https://git.kernel.org/stable/c/3f5bfc550a40d7493b1cf09540ed6b412b3b82be"
        },
        {
          "url": "https://git.kernel.org/stable/c/75776a055b656873319c3830fed471daef3ceb23"
        },
        {
          "url": "https://git.kernel.org/stable/c/cc8ec610cd14c093a19371691a7ce1ee5421e829"
        },
        {
          "url": "https://git.kernel.org/stable/c/3d436670b47415da042452618fb5d8e317ab095f"
        },
        {
          "url": "https://git.kernel.org/stable/c/23e4851ce348a329d974e84e828155dda9f52122"
        },
        {
          "url": "https://git.kernel.org/stable/c/caa27923aacd8a5869207842f2ab1657c6c0c7bc"
        }
      ],
      "title": "usb: gadget: f_subset: Fix unbalanced refcnt in geth_free",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-43343",
    "datePublished": "2026-05-08T13:37:20.663Z",
    "dateReserved": "2026-05-01T14:12:56.003Z",
    "dateUpdated": "2026-05-11T22:22:44.192Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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