{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-90021",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-11T19:38:34.781Z",
        "datePublished": "2026-09-16T10:33:25.560Z",
        "dateUpdated": "2026-10-21T12:49:27.661Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-21T12:49:27.661Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: f_midi: initialize work in f_midi_alloc()\n\nf_midi_alloc initializes free_ref to 1 and it can only be incremented\nwhen a sound card is registered via f_midi_register_card().\nf_midi_register_card() is only called in f_midi_bind() which actually\nperforms INIT_WORK. If f_midi_bind() is never run, work is not\ninitialized and the if condition in f_midi_free becomes true,\nthis results in a warning later in __flush_work as work->func = 0.\nFix this by moving INIT_WORK from f_midi_bind() to f_midi_alloc()."
                }
            ],
            "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_midi.c"
                    ],
                    "versions": [
                        {
                            "version": "8653d71ce3763aedcf3d2331f59beda3fecd79e4",
                            "lessThan": "13e9f5a91360952b9b5bbc2367fc29d4a4ff2824",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8653d71ce3763aedcf3d2331f59beda3fecd79e4",
                            "lessThan": "3d8b11255e632170f32f1925bfcaf96331f36317",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8653d71ce3763aedcf3d2331f59beda3fecd79e4",
                            "lessThan": "02ac76f27db23ef652358458c272d9d2d6f51167",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8653d71ce3763aedcf3d2331f59beda3fecd79e4",
                            "lessThan": "858576de6b2f5166b08dae803f0fd0766dcb3002",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8653d71ce3763aedcf3d2331f59beda3fecd79e4",
                            "lessThan": "7e07d3e4c389217d7d7171d80edf2e23ac70f1ea",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "89019ab7a64fcdf98a2ba7799e5c6aff58d4a05d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "3635523e9b96213969693c320302d536774d8e9b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "5.4.291",
                            "lessThan": "5.5",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.235",
                            "lessThan": "5.11",
                            "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/gadget/function/f_midi.c"
                    ],
                    "versions": [
                        {
                            "version": "5.12",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.12",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.160",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.110",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.51",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.5",
                            "lessThanOrEqual": "7.2.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.3",
                            "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": "5.12",
                                    "versionEndExcluding": "6.6.160"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.12",
                                    "versionEndExcluding": "6.12.110"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.12",
                                    "versionEndExcluding": "6.18.51"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.12",
                                    "versionEndExcluding": "7.2.5"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.12",
                                    "versionEndExcluding": "7.3"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.4.291"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.10.235"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/13e9f5a91360952b9b5bbc2367fc29d4a4ff2824"
                },
                {
                    "url": "https://git.kernel.org/stable/c/3d8b11255e632170f32f1925bfcaf96331f36317"
                },
                {
                    "url": "https://git.kernel.org/stable/c/02ac76f27db23ef652358458c272d9d2d6f51167"
                },
                {
                    "url": "https://git.kernel.org/stable/c/858576de6b2f5166b08dae803f0fd0766dcb3002"
                },
                {
                    "url": "https://git.kernel.org/stable/c/7e07d3e4c389217d7d7171d80edf2e23ac70f1ea"
                }
            ],
            "title": "usb: gadget: f_midi: initialize work in f_midi_alloc()",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}