{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2022-49434",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-02-26T02:08:31.570Z",
        "datePublished": "2025-02-26T02:12:51.068Z",
        "dateUpdated": "2026-05-11T18:59:44.724Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T18:59:44.724Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nPCI: Avoid pci_dev_lock() AB/BA deadlock with sriov_numvfs_store()\n\nThe sysfs sriov_numvfs_store() path acquires the device lock before the\nconfig space access lock:\n\n  sriov_numvfs_store\n    device_lock                 # A (1) acquire device lock\n    sriov_configure\n      vfio_pci_sriov_configure  # (for example)\n        vfio_pci_core_sriov_configure\n          pci_disable_sriov\n            sriov_disable\n              pci_cfg_access_lock\n                pci_wait_cfg    # B (4) wait for dev->block_cfg_access == 0\n\nPreviously, pci_dev_lock() acquired the config space access lock before the\ndevice lock:\n\n  pci_dev_lock\n    pci_cfg_access_lock\n      dev->block_cfg_access = 1 # B (2) set dev->block_cfg_access = 1\n    device_lock                 # A (3) wait for device lock\n\nAny path that uses pci_dev_lock(), e.g., pci_reset_function(), may\ndeadlock with sriov_numvfs_store() if the operations occur in the sequence\n(1) (2) (3) (4).\n\nAvoid the deadlock by reversing the order in pci_dev_lock() so it acquires\nthe device lock before the config space access lock, the same as the\nsriov_numvfs_store() path.\n\n[bhelgaas: combined and adapted commit log from Jay Zhou's independent\nsubsequent posting:\nhttps://lore.kernel.org/r/20220404062539.1710-1-jianjay.zhou@huawei.com]"
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/pci/pci.c"
                    ],
                    "versions": [
                        {
                            "version": "17530e71e0166a37f8e20a9b7bcf1d50ae3cff8e",
                            "lessThan": "c3c6dc1853b8bf3c718f96fd8480a6eb09ba4831",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "17530e71e0166a37f8e20a9b7bcf1d50ae3cff8e",
                            "lessThan": "aed6d4d519210c28817948f34c53b6e058e0456c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "17530e71e0166a37f8e20a9b7bcf1d50ae3cff8e",
                            "lessThan": "c9a81f9ed6ae3554621d6a50220b1bc74b67d81e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "17530e71e0166a37f8e20a9b7bcf1d50ae3cff8e",
                            "lessThan": "eff3587b9c01439b738298475e555c028ac9f55e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "17530e71e0166a37f8e20a9b7bcf1d50ae3cff8e",
                            "lessThan": "2cdd5284035322795b0964f899eefba254cfe483",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "17530e71e0166a37f8e20a9b7bcf1d50ae3cff8e",
                            "lessThan": "ea047f51172aa68841adef7f52d375002438b8f0",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "17530e71e0166a37f8e20a9b7bcf1d50ae3cff8e",
                            "lessThan": "59ea6b3ae51df7cd6bfd84c9c0030609b9315622",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "17530e71e0166a37f8e20a9b7bcf1d50ae3cff8e",
                            "lessThan": "a91ee0e9fca9d7501286cfbced9b30a33e52740a",
                            "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/pci/pci.c"
                    ],
                    "versions": [
                        {
                            "version": "4.13",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.13",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "4.14.283",
                            "lessThanOrEqual": "4.14.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "4.19.247",
                            "lessThanOrEqual": "4.19.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.4.198",
                            "lessThanOrEqual": "5.4.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.121",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.46",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.17.14",
                            "lessThanOrEqual": "5.17.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.18.3",
                            "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": "4.13",
                                    "versionEndExcluding": "4.14.283"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.13",
                                    "versionEndExcluding": "4.19.247"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.13",
                                    "versionEndExcluding": "5.4.198"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.13",
                                    "versionEndExcluding": "5.10.121"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.13",
                                    "versionEndExcluding": "5.15.46"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.13",
                                    "versionEndExcluding": "5.17.14"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.13",
                                    "versionEndExcluding": "5.18.3"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.13",
                                    "versionEndExcluding": "5.19"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/c3c6dc1853b8bf3c718f96fd8480a6eb09ba4831"
                },
                {
                    "url": "https://git.kernel.org/stable/c/aed6d4d519210c28817948f34c53b6e058e0456c"
                },
                {
                    "url": "https://git.kernel.org/stable/c/c9a81f9ed6ae3554621d6a50220b1bc74b67d81e"
                },
                {
                    "url": "https://git.kernel.org/stable/c/eff3587b9c01439b738298475e555c028ac9f55e"
                },
                {
                    "url": "https://git.kernel.org/stable/c/2cdd5284035322795b0964f899eefba254cfe483"
                },
                {
                    "url": "https://git.kernel.org/stable/c/ea047f51172aa68841adef7f52d375002438b8f0"
                },
                {
                    "url": "https://git.kernel.org/stable/c/59ea6b3ae51df7cd6bfd84c9c0030609b9315622"
                },
                {
                    "url": "https://git.kernel.org/stable/c/a91ee0e9fca9d7501286cfbced9b30a33e52740a"
                }
            ],
            "title": "PCI: Avoid pci_dev_lock() AB/BA deadlock with sriov_numvfs_store()",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}