{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2022-49755",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-03-27T16:39:17.988Z",
        "datePublished": "2025-03-27T16:43:02.950Z",
        "dateUpdated": "2026-05-11T19:06:09.292Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T19:06:09.292Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: f_fs: Prevent race during ffs_ep0_queue_wait\n\nWhile performing fast composition switch, there is a possibility that the\nprocess of ffs_ep0_write/ffs_ep0_read get into a race condition\ndue to ep0req being freed up from functionfs_unbind.\n\nConsider the scenario that the ffs_ep0_write calls the ffs_ep0_queue_wait\nby taking a lock &ffs->ev.waitq.lock. However, the functionfs_unbind isn't\nbounded so it can go ahead and mark the ep0req to NULL, and since there\nis no NULL check in ffs_ep0_queue_wait we will end up in use-after-free.\n\nFix this by making a serialized execution between the two functions using\na mutex_lock(ffs->mutex)."
                }
            ],
            "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_fs.c"
                    ],
                    "versions": [
                        {
                            "version": "ddf8abd2599491cbad959c700b90ba72a5dce8d0",
                            "lessThan": "facf353c9e8d7885b686d9a4b173d4e0af6441d2",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ddf8abd2599491cbad959c700b90ba72a5dce8d0",
                            "lessThan": "e9036e951f93fb8d7b5e9d6e2c7f94a4da312ae4",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ddf8abd2599491cbad959c700b90ba72a5dce8d0",
                            "lessThan": "a8d40942df074f4ebcb9bd3413596d92f323b064",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ddf8abd2599491cbad959c700b90ba72a5dce8d0",
                            "lessThan": "6dd9ea05534f323668db94fcc2726c7a84547e78",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ddf8abd2599491cbad959c700b90ba72a5dce8d0",
                            "lessThan": "ae8e136bcaae96163b5821984de1036efc9abb1a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ddf8abd2599491cbad959c700b90ba72a5dce8d0",
                            "lessThan": "6aee197b7fbcd61596a78b47d553f2f99111f217",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ddf8abd2599491cbad959c700b90ba72a5dce8d0",
                            "lessThan": "6a19da111057f69214b97c62fb0ac59023970850",
                            "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/f_fs.c"
                    ],
                    "versions": [
                        {
                            "version": "2.6.35",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "2.6.35",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "4.14.305",
                            "lessThanOrEqual": "4.14.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "4.19.272",
                            "lessThanOrEqual": "4.19.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.4.231",
                            "lessThanOrEqual": "5.4.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.166",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.91",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.9",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.2",
                            "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": "2.6.35",
                                    "versionEndExcluding": "4.14.305"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.35",
                                    "versionEndExcluding": "4.19.272"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.35",
                                    "versionEndExcluding": "5.4.231"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.35",
                                    "versionEndExcluding": "5.10.166"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.35",
                                    "versionEndExcluding": "5.15.91"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.35",
                                    "versionEndExcluding": "6.1.9"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.35",
                                    "versionEndExcluding": "6.2"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/facf353c9e8d7885b686d9a4b173d4e0af6441d2"
                },
                {
                    "url": "https://git.kernel.org/stable/c/e9036e951f93fb8d7b5e9d6e2c7f94a4da312ae4"
                },
                {
                    "url": "https://git.kernel.org/stable/c/a8d40942df074f4ebcb9bd3413596d92f323b064"
                },
                {
                    "url": "https://git.kernel.org/stable/c/6dd9ea05534f323668db94fcc2726c7a84547e78"
                },
                {
                    "url": "https://git.kernel.org/stable/c/ae8e136bcaae96163b5821984de1036efc9abb1a"
                },
                {
                    "url": "https://git.kernel.org/stable/c/6aee197b7fbcd61596a78b47d553f2f99111f217"
                },
                {
                    "url": "https://git.kernel.org/stable/c/6a19da111057f69214b97c62fb0ac59023970850"
                }
            ],
            "title": "usb: gadget: f_fs: Prevent race during ffs_ep0_queue_wait",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "cvssV3_1": {
                            "scope": "UNCHANGED",
                            "version": "3.1",
                            "baseScore": 7.8,
                            "attackVector": "LOCAL",
                            "baseSeverity": "HIGH",
                            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                            "integrityImpact": "HIGH",
                            "userInteraction": "NONE",
                            "attackComplexity": "LOW",
                            "availabilityImpact": "HIGH",
                            "privilegesRequired": "LOW",
                            "confidentialityImpact": "HIGH"
                        }
                    },
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "id": "CVE-2022-49755",
                                "role": "CISA Coordinator",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "total"
                                    }
                                ],
                                "version": "2.0.3",
                                "timestamp": "2025-03-28T15:22:31.876200Z"
                            }
                        }
                    }
                ],
                "problemTypes": [
                    {
                        "descriptions": [
                            {
                                "lang": "en",
                                "type": "CWE",
                                "cweId": "CWE-416",
                                "description": "CWE-416 Use After Free"
                            }
                        ]
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2025-03-28T15:31:59.379Z"
                }
            }
        ]
    }
}