{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2022-50058",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-06-18T10:57:27.404Z",
        "datePublished": "2025-06-18T11:02:06.988Z",
        "dateUpdated": "2026-05-11T19:12:02.846Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T19:12:02.846Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvdpa_sim_blk: set number of address spaces and virtqueue groups\n\nCommit bda324fd037a (\"vdpasim: control virtqueue support\") added two\nnew fields (nas, ngroups) to vdpasim_dev_attr, but we forgot to\ninitialize them for vdpa_sim_blk.\n\nWhen creating a new vdpa_sim_blk device this causes the kernel\nto panic in this way:\n    $ vdpa dev add mgmtdev vdpasim_blk name blk0\n    BUG: kernel NULL pointer dereference, address: 0000000000000030\n    ...\n    RIP: 0010:vhost_iotlb_add_range_ctx+0x41/0x220 [vhost_iotlb]\n    ...\n    Call Trace:\n     <TASK>\n     vhost_iotlb_add_range+0x11/0x800 [vhost_iotlb]\n     vdpasim_map_range+0x91/0xd0 [vdpa_sim]\n     vdpasim_alloc_coherent+0x56/0x90 [vdpa_sim]\n     ...\n\nThis happens because vdpasim->iommu[0] is not initialized when\ndev_attr.nas is 0.\n\nLet's fix this issue by initializing both (nas, ngroups) to 1 for\nvdpa_sim_blk."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/vdpa/vdpa_sim/vdpa_sim_blk.c"
                    ],
                    "versions": [
                        {
                            "version": "bda324fd037a6b0d44da5699574ce741ca161bc4",
                            "lessThan": "a291c7d289fac2cb13fb2614a9a251afbbd86ce9",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "bda324fd037a6b0d44da5699574ce741ca161bc4",
                            "lessThan": "19cd4a5471b8eaa4bd161b0fdb4567f2fc88d809",
                            "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/vdpa/vdpa_sim/vdpa_sim_blk.c"
                    ],
                    "versions": [
                        {
                            "version": "5.19",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.19",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.19.4",
                            "lessThanOrEqual": "5.19.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.0",
                            "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": "5.19",
                                    "versionEndExcluding": "5.19.4"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.19",
                                    "versionEndExcluding": "6.0"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/a291c7d289fac2cb13fb2614a9a251afbbd86ce9"
                },
                {
                    "url": "https://git.kernel.org/stable/c/19cd4a5471b8eaa4bd161b0fdb4567f2fc88d809"
                }
            ],
            "title": "vdpa_sim_blk: set number of address spaces and virtqueue groups",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}