CVE-2026-43343
Estado: AnalizadaMedia (5.5)—
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.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Puntuación base: 5.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.16%
- Percentil entre todas las CVEs puntuadas: 5
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (1)
CWE
- NVD-CWE-Other
Referencias
- https://git.kernel.org/stable/c/23e4851ce348a329d974e84e828155dda9f52122
- https://git.kernel.org/stable/c/3d436670b47415da042452618fb5d8e317ab095f
- https://git.kernel.org/stable/c/3f5bfc550a40d7493b1cf09540ed6b412b3b82be
- https://git.kernel.org/stable/c/75776a055b656873319c3830fed471daef3ceb23
- https://git.kernel.org/stable/c/a932b171554714b1bca313b853c7aa9f2930f9aa
- https://git.kernel.org/stable/c/caa27923aacd8a5869207842f2ab1657c6c0c7bc
- https://git.kernel.org/stable/c/cc8ec610cd14c093a19371691a7ce1ee5421e829
- https://git.kernel.org/stable/c/d7d702407b61e96286a15b6e715572f541a8d41c
JSON original (NVD)
Mostrar
{
"id": "CVE-2026-43343",
"cveTags": [],
"metrics": {
"cvssMetricV31": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 5.5,
"attackVector": "LOCAL",
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"integrityImpact": "NONE",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "LOW",
"confidentialityImpact": "NONE"
},
"impactScore": 3.6,
"exploitabilityScore": 1.8
}
]
},
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "02832e56f88a981474ee4c7c141f46fc1b4454f4",
"lessThan": "a932b171554714b1bca313b853c7aa9f2930f9aa",
"versionType": "git"
},
{
"status": "affected",
"version": "02832e56f88a981474ee4c7c141f46fc1b4454f4",
"lessThan": "d7d702407b61e96286a15b6e715572f541a8d41c",
"versionType": "git"
},
{
"status": "affected",
"version": "02832e56f88a981474ee4c7c141f46fc1b4454f4",
"lessThan": "3f5bfc550a40d7493b1cf09540ed6b412b3b82be",
"versionType": "git"
},
{
"status": "affected",
"version": "02832e56f88a981474ee4c7c141f46fc1b4454f4",
"lessThan": "75776a055b656873319c3830fed471daef3ceb23",
"versionType": "git"
},
{
"status": "affected",
"version": "02832e56f88a981474ee4c7c141f46fc1b4454f4",
"lessThan": "cc8ec610cd14c093a19371691a7ce1ee5421e829",
"versionType": "git"
},
{
"status": "affected",
"version": "02832e56f88a981474ee4c7c141f46fc1b4454f4",
"lessThan": "3d436670b47415da042452618fb5d8e317ab095f",
"versionType": "git"
},
{
"status": "affected",
"version": "02832e56f88a981474ee4c7c141f46fc1b4454f4",
"lessThan": "23e4851ce348a329d974e84e828155dda9f52122",
"versionType": "git"
},
{
"status": "affected",
"version": "02832e56f88a981474ee4c7c141f46fc1b4454f4",
"lessThan": "caa27923aacd8a5869207842f2ab1657c6c0c7bc",
"versionType": "git"
}
],
"programFiles": [
"drivers/usb/gadget/function/f_subset.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3.11"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "3.11",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.253",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.203",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.168",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.134",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.81",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.22",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "6.19.12",
"versionType": "semver",
"lessThanOrEqual": "6.19.*"
},
{
"status": "unaffected",
"version": "7.0",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/usb/gadget/function/f_subset.c"
],
"defaultStatus": "affected"
}
]
}
],
"published": "2026-05-08T14:16:44.300",
"references": [
{
"url": "https://git.kernel.org/stable/c/23e4851ce348a329d974e84e828155dda9f52122",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/3d436670b47415da042452618fb5d8e317ab095f",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/3f5bfc550a40d7493b1cf09540ed6b412b3b82be",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/75776a055b656873319c3830fed471daef3ceb23",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/a932b171554714b1bca313b853c7aa9f2930f9aa",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/caa27923aacd8a5869207842f2ab1657c6c0c7bc",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/cc8ec610cd14c093a19371691a7ce1ee5421e829",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/d7d702407b61e96286a15b6e715572f541a8d41c",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"vulnStatus": "Analyzed",
"weaknesses": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "NVD-CWE-Other"
}
]
}
],
"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."
}
],
"lastModified": "2026-06-17T10:49:25.280",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "7F1F33AF-738B-4269-B6DC-69C6F80BAFB7",
"versionEndExcluding": "5.10.253",
"versionStartIncluding": "3.11"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "20DDB3E9-AABF-4107-ADB0-5362AA067045",
"versionEndExcluding": "5.15.203",
"versionStartIncluding": "5.11"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "E2DDDCA1-6DAB-4018-B920-8F045DDD8D3B",
"versionEndExcluding": "6.1.168",
"versionStartIncluding": "5.16"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "F56F925B-BAF8-4F4B-B62F-1496AF19A307",
"versionEndExcluding": "6.6.134",
"versionStartIncluding": "6.2"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "6EF80433-B33B-43C5-8E64-0FA7B8DCE1BC",
"versionEndExcluding": "6.12.81",
"versionStartIncluding": "6.7"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "C9DF8BCE-36D3-475D-9D21-19E4F02F9029",
"versionEndExcluding": "6.18.22",
"versionStartIncluding": "6.13"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "0A2B9540-02D5-41B4-B16A-82AF66FD4F36",
"versionEndExcluding": "6.19.12",
"versionStartIncluding": "6.19"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "F253B622-8837-4245-BCE5-A7BF8FC76A16"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "4AE85AD8-4641-4E7C-A2F4-305E2CD9EE64"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "F666C8D8-6538-46D4-B318-87610DE64C34"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "02259FDA-961B-47BC-AE7F-93D7EC6E90C2"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "58A9FEFF-C040-420D-8F0A-BFDAAA1DF258"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "1D2315C0-D46F-4F85-9754-F9E5E11374A6"
}
],
"operator": "OR"
}
]
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}