{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-31728",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-03-09T15:48:24.134Z",
        "datePublished": "2026-05-01T14:14:28.231Z",
        "dateUpdated": "2026-05-11T22:14:36.858Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T22:14:36.858Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: u_ether: Fix race between gether_disconnect and eth_stop\n\nA race condition between gether_disconnect() and eth_stop() leads to a\nNULL pointer dereference. Specifically, if eth_stop() is triggered\nconcurrently while gether_disconnect() is tearing down the endpoints,\neth_stop() attempts to access the cleared endpoint descriptor, causing\nthe following NPE:\n\n  Unable to handle kernel NULL pointer dereference\n  Call trace:\n   __dwc3_gadget_ep_enable+0x60/0x788\n   dwc3_gadget_ep_enable+0x70/0xe4\n   usb_ep_enable+0x60/0x15c\n   eth_stop+0xb8/0x108\n\nBecause eth_stop() crashes while holding the dev->lock, the thread\nrunning gether_disconnect() fails to acquire the same lock and spins\nforever, resulting in a hardlockup:\n\n  Core - Debugging Information for Hardlockup core(7)\n  Call trace:\n   queued_spin_lock_slowpath+0x94/0x488\n   _raw_spin_lock+0x64/0x6c\n   gether_disconnect+0x19c/0x1e8\n   ncm_set_alt+0x68/0x1a0\n   composite_setup+0x6a0/0xc50\n\nThe root cause is that the clearing of dev->port_usb in\ngether_disconnect() is delayed until the end of the function.\n\nMove the clearing of dev->port_usb to the very beginning of\ngether_disconnect() while holding dev->lock. This cuts off the link\nimmediately, ensuring eth_stop() will see dev->port_usb as NULL and\nsafely bail out."
                }
            ],
            "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/u_ether.c"
                    ],
                    "versions": [
                        {
                            "version": "2b3d942c4878084a37991a65e66512c02b8fa2ad",
                            "lessThan": "f02980594deef751e42133714aee25228f1494c6",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2b3d942c4878084a37991a65e66512c02b8fa2ad",
                            "lessThan": "e1e7a66584bf0aff3becb73c19fa31527889fc9e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2b3d942c4878084a37991a65e66512c02b8fa2ad",
                            "lessThan": "a259ba0bce3b192c04334499690372a250f7d0b1",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2b3d942c4878084a37991a65e66512c02b8fa2ad",
                            "lessThan": "f6813c2b2ae78def76b69e0f9d72f80e4a1c4aca",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2b3d942c4878084a37991a65e66512c02b8fa2ad",
                            "lessThan": "bbb09bb89ffa571475f66daca9482b974cd29d6a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2b3d942c4878084a37991a65e66512c02b8fa2ad",
                            "lessThan": "6ad77458637b78ec655e3da5f112c862e6690a9d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2b3d942c4878084a37991a65e66512c02b8fa2ad",
                            "lessThan": "8ff689edfeceb5e3ec1623e09af2b2aa0f1098a8",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2b3d942c4878084a37991a65e66512c02b8fa2ad",
                            "lessThan": "e1eabb072c75681f78312c484ccfffb7430f206e",
                            "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/u_ether.c"
                    ],
                    "versions": [
                        {
                            "version": "2.6.27",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "2.6.27",
                            "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": "6.1.169",
                            "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": "2.6.27",
                                    "versionEndExcluding": "5.10.253"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.27",
                                    "versionEndExcluding": "5.15.203"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.27",
                                    "versionEndExcluding": "6.1.169"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.27",
                                    "versionEndExcluding": "6.6.134"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.27",
                                    "versionEndExcluding": "6.12.81"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.27",
                                    "versionEndExcluding": "6.18.22"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.27",
                                    "versionEndExcluding": "6.19.12"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.27",
                                    "versionEndExcluding": "7.0"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/f02980594deef751e42133714aee25228f1494c6"
                },
                {
                    "url": "https://git.kernel.org/stable/c/e1e7a66584bf0aff3becb73c19fa31527889fc9e"
                },
                {
                    "url": "https://git.kernel.org/stable/c/a259ba0bce3b192c04334499690372a250f7d0b1"
                },
                {
                    "url": "https://git.kernel.org/stable/c/f6813c2b2ae78def76b69e0f9d72f80e4a1c4aca"
                },
                {
                    "url": "https://git.kernel.org/stable/c/bbb09bb89ffa571475f66daca9482b974cd29d6a"
                },
                {
                    "url": "https://git.kernel.org/stable/c/6ad77458637b78ec655e3da5f112c862e6690a9d"
                },
                {
                    "url": "https://git.kernel.org/stable/c/8ff689edfeceb5e3ec1623e09af2b2aa0f1098a8"
                },
                {
                    "url": "https://git.kernel.org/stable/c/e1eabb072c75681f78312c484ccfffb7430f206e"
                }
            ],
            "title": "usb: gadget: u_ether: Fix race between gether_disconnect and eth_stop",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}