{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-64346",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-07-19T15:36:31.782Z",
        "datePublished": "2026-07-25T08:50:07.680Z",
        "dateUpdated": "2026-08-17T04:53:51.249Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-17T04:53:51.249Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: udc: Fix use-after-free in gadget_match_driver\n\nThe udc structure acts as the management structure for the gadget,\nbut their lifecycles are decoupled. A race condition exists where\nusb_del_gadget() frees the udc memory (e.g., via mode-switch work)\nwhile gadget_match_driver() concurrently accesses the freed udc memory\n(e.g., via configfs), causing a Use-After-Free (UAF) that triggers a\nNULL pointer dereference when the freed memory is zeroed:\n\n[39430.908615][ T1171] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000\n[39430.911397][ T1171] pc : __pi_strcmp+0x20/0x140\n[39430.911441][ T1171] lr : gadget_match_driver+0x34/0x60\n...\n[39430.911890][ T1171]  usb_gadget_register_driver_owner+0x50/0xf8\n[39430.911910][ T1171]  gadget_dev_desc_UDC_store+0xf4/0x140\n[39430.931308][ T1171]  configfs_write_iter+0xec/0x134\n\n[39430.957058][ T1171] Workqueue: events_freezable __dwc3_set_mode\n[39430.957287][ T1171]  dwc3_gadget_exit+0x34/0x8c\n[39430.957304][ T1171]  __dwc3_set_mode+0xc0/0x664\n\nFix this by ensuring the udc structure remains allocated until the\ngadget is released. To achieve this, introduce a new\nusb_gadget_release() routine to the core. When the gadget is added,\nusb_add_gadget() stores the gadget's release routine in the udc\nstructure and takes a reference to the udc. When the gadget is\nreleased, usb_gadget_release() drops the reference to the udc and\nthen calls the gadget's release routine."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/usb/gadget/udc/core.c"
                    ],
                    "versions": [
                        {
                            "version": "fc274c1e997314bf47f6a62c79b5d7e554ed59c4",
                            "lessThan": "50eeb8e8a4f389efc91b93cff14a683e714ec194",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "fc274c1e997314bf47f6a62c79b5d7e554ed59c4",
                            "lessThan": "7a5214dae906d9f58e07bc4995e8181ee74439f4",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "fc274c1e997314bf47f6a62c79b5d7e554ed59c4",
                            "lessThan": "d026f71df141c9b064ff32a78af5391a31ef75c2",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "fc274c1e997314bf47f6a62c79b5d7e554ed59c4",
                            "lessThan": "b52476a83d9e12df00765359d728a875b128bef1",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "fc274c1e997314bf47f6a62c79b5d7e554ed59c4",
                            "lessThan": "54fa390aae393eb130f307a85562e3001cc39a52",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "fc274c1e997314bf47f6a62c79b5d7e554ed59c4",
                            "lessThan": "67e511d2989eb1c8c588b599ce2fcc6bb8e6f7ea",
                            "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/udc/core.c"
                    ],
                    "versions": [
                        {
                            "version": "5.19",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.19",
                            "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": "5.19",
                                    "versionEndExcluding": "6.1.178"
                                },
                                {
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                                    "versionEndExcluding": "6.6.145"
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.19",
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                                    "versionStartIncluding": "5.19",
                                    "versionEndExcluding": "7.2"
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            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/50eeb8e8a4f389efc91b93cff14a683e714ec194"
                },
                {
                    "url": "https://git.kernel.org/stable/c/7a5214dae906d9f58e07bc4995e8181ee74439f4"
                },
                {
                    "url": "https://git.kernel.org/stable/c/d026f71df141c9b064ff32a78af5391a31ef75c2"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b52476a83d9e12df00765359d728a875b128bef1"
                },
                {
                    "url": "https://git.kernel.org/stable/c/54fa390aae393eb130f307a85562e3001cc39a52"
                },
                {
                    "url": "https://git.kernel.org/stable/c/67e511d2989eb1c8c588b599ce2fcc6bb8e6f7ea"
                }
            ],
            "title": "usb: gadget: udc: Fix use-after-free in gadget_match_driver",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}