{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2022-49398",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-02-26T02:08:31.563Z",
        "datePublished": "2025-02-26T02:12:27.141Z",
        "dateUpdated": "2026-05-23T15:22:06.437Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-23T15:22:06.437Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: dwc3: gadget: Replace list_for_each_entry_safe() if using giveback\n\nThe list_for_each_entry_safe() macro saves the current item (n) and\nthe item after (n+1), so that n can be safely removed without\ncorrupting the list.  However, when traversing the list and removing\nitems using gadget giveback, the DWC3 lock is briefly released,\nallowing other routines to execute.  There is a situation where, while\nitems are being removed from the cancelled_list using\ndwc3_gadget_ep_cleanup_cancelled_requests(), the pullup disable\nroutine is running in parallel (due to UDC unbind).  As the cleanup\nroutine removes n, and the pullup disable removes n+1, once the\ncleanup retakes the DWC3 lock, it references a request who was already\nremoved/handled.  With list debug enabled, this leads to a panic.\nEnsure all instances of the macro are replaced where gadget giveback\nis used.\n\nExample call stack:\n\nThread#1:\n__dwc3_gadget_ep_set_halt() - CLEAR HALT\n  -> dwc3_gadget_ep_cleanup_cancelled_requests()\n    ->list_for_each_entry_safe()\n    ->dwc3_gadget_giveback(n)\n      ->dwc3_gadget_del_and_unmap_request()- n deleted[cancelled_list]\n      ->spin_unlock\n      ->Thread#2 executes\n      ...\n    ->dwc3_gadget_giveback(n+1)\n      ->Already removed!\n\nThread#2:\ndwc3_gadget_pullup()\n  ->waiting for dwc3 spin_lock\n  ...\n  ->Thread#1 released lock\n  ->dwc3_stop_active_transfers()\n    ->dwc3_remove_requests()\n      ->fetches n+1 item from cancelled_list (n removed by Thread#1)\n      ->dwc3_gadget_giveback()\n        ->dwc3_gadget_del_and_unmap_request()- n+1 deleted[cancelled_list]\n        ->spin_unlock"
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/usb/dwc3/gadget.c"
                    ],
                    "versions": [
                        {
                            "version": "d4f1afe5e896c18ae01099a85dab5e1a198bd2a8",
                            "lessThan": "1c6e5dc3b639c96e6839a8d1b8e951923fdfd34a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "d4f1afe5e896c18ae01099a85dab5e1a198bd2a8",
                            "lessThan": "2424307cdf421ac72075a1384eae4e4199ab6457",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "d4f1afe5e896c18ae01099a85dab5e1a198bd2a8",
                            "lessThan": "26a7e6832afe9d9a991cfd9015177f083cf959cc",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "d4f1afe5e896c18ae01099a85dab5e1a198bd2a8",
                            "lessThan": "bf594d1d0c1d7b895954018043536ffd327844f9",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "d7ff2e3ff0e09d57b43014fe26b13bb3c9677254",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "4.19.57",
                            "lessThan": "4.20",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/usb/dwc3/gadget.c"
                    ],
                    "versions": [
                        {
                            "version": "5.0",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.0",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.47",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.17.15",
                            "lessThanOrEqual": "5.17.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.18.4",
                            "lessThanOrEqual": "5.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.19",
                            "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": "5.0",
                                    "versionEndExcluding": "5.15.47"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.0",
                                    "versionEndExcluding": "5.17.15"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.0",
                                    "versionEndExcluding": "5.18.4"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.0",
                                    "versionEndExcluding": "5.19"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.19.57"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/1c6e5dc3b639c96e6839a8d1b8e951923fdfd34a"
                },
                {
                    "url": "https://git.kernel.org/stable/c/2424307cdf421ac72075a1384eae4e4199ab6457"
                },
                {
                    "url": "https://git.kernel.org/stable/c/26a7e6832afe9d9a991cfd9015177f083cf959cc"
                },
                {
                    "url": "https://git.kernel.org/stable/c/bf594d1d0c1d7b895954018043536ffd327844f9"
                }
            ],
            "title": "usb: dwc3: gadget: Replace list_for_each_entry_safe() if using giveback",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}