{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-64347",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-07-19T15:36:31.782Z",
        "datePublished": "2026-07-25T08:50:08.338Z",
        "dateUpdated": "2026-08-17T04:53:52.339Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-17T04:53:52.339Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: composite: fix dead empty check in the USB_DT_OTG handler\n\nThe OTG branch of composite_setup() falls back to the first\nconfiguration when none is selected:\n\n\tif (cdev->config)\n\t\tconfig = cdev->config;\n\telse\n\t\tconfig = list_first_entry(&cdev->configs,\n\t\t\t\t\t  struct usb_configuration, list);\n\tif (!config)\n\t\tgoto done;\n\t...\n\tmemcpy(req->buf, config->descriptors[0], value);\n\nlist_first_entry() never returns NULL. On an empty list it returns\ncontainer_of() of the list head. So the \"if (!config)\" check is dead.\n\nWhen cdev->configs is empty, config points at the head inside struct\nusb_composite_dev. config->descriptors[0] reads whatever sits at that\noffset. The memcpy copies up to w_length bytes of it into the response\nbuffer.\n\ncdev->configs can be empty in two cases. One is a teardown race on\ngadget unbind with a control transfer in flight. The other is a driver\nthat sets is_otg before it adds a config. A reproducer that holds\ncdev->configs empty triggers a KASAN fault in this branch.\n\nUse list_first_entry_or_null() so the existing check does its job."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/usb/gadget/composite.c"
                    ],
                    "versions": [
                        {
                            "version": "53e6242db8d60da0587d36951cc9434d1a1c21dd",
                            "lessThan": "2454264b2ab4cf0055c0bfd39e79f830452bd0db",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "53e6242db8d60da0587d36951cc9434d1a1c21dd",
                            "lessThan": "d3e72cfef2e38bd588055739a8100d14f9773b17",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "53e6242db8d60da0587d36951cc9434d1a1c21dd",
                            "lessThan": "8ac463fe6c0f85bdb1ce8c30e8c9e060802e4483",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "53e6242db8d60da0587d36951cc9434d1a1c21dd",
                            "lessThan": "56add2b9b2e89ec61c0761165d758f73004fdfdf",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "53e6242db8d60da0587d36951cc9434d1a1c21dd",
                            "lessThan": "91b3ecd34b60f950c50c560974945b6596a6f207",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "53e6242db8d60da0587d36951cc9434d1a1c21dd",
                            "lessThan": "01feaf024f29618d5ffa7ab0fd858e0579dcbf7b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "53e6242db8d60da0587d36951cc9434d1a1c21dd",
                            "lessThan": "fcb21bf747640c9d6bd1eda9da85420f076d59c1",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "53e6242db8d60da0587d36951cc9434d1a1c21dd",
                            "lessThan": "f8f680609c2b3ab795ffcd6f21585b6dfc46d395",
                            "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/composite.c"
                    ],
                    "versions": [
                        {
                            "version": "4.3",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.3",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.261",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.212",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.178",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.145",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.96",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.39",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1.4",
                            "lessThanOrEqual": "7.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2",
                            "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": "4.3",
                                    "versionEndExcluding": "5.10.261"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.3",
                                    "versionEndExcluding": "5.15.212"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.3",
                                    "versionEndExcluding": "6.1.178"
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                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.3",
                                    "versionEndExcluding": "6.6.145"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.3",
                                    "versionEndExcluding": "6.12.96"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.3",
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                                },
                                {
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.3",
                                    "versionEndExcluding": "7.1.4"
                                },
                                {
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.3",
                                    "versionEndExcluding": "7.2"
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                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/2454264b2ab4cf0055c0bfd39e79f830452bd0db"
                },
                {
                    "url": "https://git.kernel.org/stable/c/d3e72cfef2e38bd588055739a8100d14f9773b17"
                },
                {
                    "url": "https://git.kernel.org/stable/c/8ac463fe6c0f85bdb1ce8c30e8c9e060802e4483"
                },
                {
                    "url": "https://git.kernel.org/stable/c/56add2b9b2e89ec61c0761165d758f73004fdfdf"
                },
                {
                    "url": "https://git.kernel.org/stable/c/91b3ecd34b60f950c50c560974945b6596a6f207"
                },
                {
                    "url": "https://git.kernel.org/stable/c/01feaf024f29618d5ffa7ab0fd858e0579dcbf7b"
                },
                {
                    "url": "https://git.kernel.org/stable/c/fcb21bf747640c9d6bd1eda9da85420f076d59c1"
                },
                {
                    "url": "https://git.kernel.org/stable/c/f8f680609c2b3ab795ffcd6f21585b6dfc46d395"
                }
            ],
            "title": "usb: gadget: composite: fix dead empty check in the USB_DT_OTG handler",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}