CVE-2026-43343

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This prevents the configuration of attributes via configfs\nafter unlinking the function.\n\nDecrement the reference count in geth_free() to ensure proper cleanup."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/usb/gadget/function/f_subset.c"], "versions": [{"version": "02832e56f88a981474ee4c7c141f46fc1b4454f4", "lessThan": "a932b171554714b1bca313b853c7aa9f2930f9aa", "status": "affected", "versionType": "git"}, {"version": "02832e56f88a981474ee4c7c141f46fc1b4454f4", "lessThan": "d7d702407b61e96286a15b6e715572f541a8d41c", "status": "affected", "versionType": "git"}, {"version": "02832e56f88a981474ee4c7c141f46fc1b4454f4", "lessThan": "3f5bfc550a40d7493b1cf09540ed6b412b3b82be", "status": "affected", "versionType": "git"}, {"version": "02832e56f88a981474ee4c7c141f46fc1b4454f4", "lessThan": "75776a055b656873319c3830fed471daef3ceb23", "status": "affected", "versionType": "git"}, {"version": "02832e56f88a981474ee4c7c141f46fc1b4454f4", "lessThan": "cc8ec610cd14c093a19371691a7ce1ee5421e829", "status": "affected", "versionType": "git"}, {"version": "02832e56f88a981474ee4c7c141f46fc1b4454f4", "lessThan": "3d436670b47415da042452618fb5d8e317ab095f", "status": "affected", "versionType": "git"}, {"version": "02832e56f88a981474ee4c7c141f46fc1b4454f4", "lessThan": "23e4851ce348a329d974e84e828155dda9f52122", "status": "affected", "versionType": "git"}, {"version": "02832e56f88a981474ee4c7c141f46fc1b4454f4", "lessThan": "caa27923aacd8a5869207842f2ab1657c6c0c7bc", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/usb/gadget/function/f_subset.c"], "versions": [{"version": "3.11", "status": "affected"}, {"version": "0", "lessThan": "3.11", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.253", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.203", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.168", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.134", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.81", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.22", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19.12", "lessThanOrEqual": "6.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.11", "versionEndExcluding": "5.10.253"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.11", "versionEndExcluding": "5.15.203"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.11", "versionEndExcluding": "6.1.168"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.11", "versionEndExcluding": "6.6.134"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.11", "versionEndExcluding": "6.12.81"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.11", "versionEndExcluding": "6.18.22"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.11", "versionEndExcluding": "6.19.12"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.11", "versionEndExcluding": "7.0"}]}]}], "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"}}}}

{}

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This prevents the configuration of attributes via configfs\nafter unlinking the function.\n\nDecrement the reference count in geth_free() to ensure proper cleanup."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nusb: gadget: f_subset: Correcci\u00f3n del recuento de referencias desequilibrado en geth_free\n\ngeth_alloc() incrementa el recuento de referencias, pero geth_free() falla al decrementarlo. Esto impide la configuraci\u00f3n de atributos a trav\u00e9s de configfs despu\u00e9s de desvincular la funci\u00f3n.\n\nDecrementa el recuento de referencias en geth_free() para asegurar una limpieza adecuada."}], "id": "CVE-2026-43343", "lastModified": "2026-11-11T20:10:00.273", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2026-05-08T14:16:44.300", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/23e4851ce348a329d974e84e828155dda9f52122"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/3d436670b47415da042452618fb5d8e317ab095f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/3f5bfc550a40d7493b1cf09540ed6b412b3b82be"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/75776a055b656873319c3830fed471daef3ceb23"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a932b171554714b1bca313b853c7aa9f2930f9aa"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/caa27923aacd8a5869207842f2ab1657c6c0c7bc"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/cc8ec610cd14c093a19371691a7ce1ee5421e829"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d7d702407b61e96286a15b6e715572f541a8d41c"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-Other"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: usb: gadget: f_subset: Fix unbalanced refcnt in geth_free", "id": "2468064", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2468064"}, "csaw": false, "cwe": "CWE-911", "details": ["A flaw was found in the `usb: gadget: f_subset` module of the Linux kernel. The `geth_free()` function fails to decrement a reference count that was incremented by `geth_alloc()`. This unbalanced reference count can lead to a resource leak, preventing the configuration of attributes through the configfs interface after a function has been unlinked. This can result in a denial of service for specific USB gadget configurations."], "name": "CVE-2026-43343", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-05-08T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-43343\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-43343\nhttps://lore.kernel.org/linux-cve-announce/2026050825-CVE-2026-43343-637d@gregkh/T"]}

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