{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2022-49930",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-05-01T14:05:17.254Z",
        "datePublished": "2025-05-01T14:11:07.408Z",
        "dateUpdated": "2026-05-11T19:09:27.810Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T19:09:27.810Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/hns: Fix NULL pointer problem in free_mr_init()\n\nLock grab occurs in a concurrent scenario, resulting in stepping on a NULL\npointer.  It should be init mutex_init() first before use the lock.\n\n  Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000\n  Call trace:\n   __mutex_lock.constprop.0+0xd0/0x5c0\n   __mutex_lock_slowpath+0x1c/0x2c\n   mutex_lock+0x44/0x50\n   free_mr_send_cmd_to_hw+0x7c/0x1c0 [hns_roce_hw_v2]\n   hns_roce_v2_dereg_mr+0x30/0x40 [hns_roce_hw_v2]\n   hns_roce_dereg_mr+0x4c/0x130 [hns_roce_hw_v2]\n   ib_dereg_mr_user+0x54/0x124\n   uverbs_free_mr+0x24/0x30\n   destroy_hw_idr_uobject+0x38/0x74\n   uverbs_destroy_uobject+0x48/0x1c4\n   uobj_destroy+0x74/0xcc\n   ib_uverbs_cmd_verbs+0x368/0xbb0\n   ib_uverbs_ioctl+0xec/0x1a4\n   __arm64_sys_ioctl+0xb4/0x100\n   invoke_syscall+0x50/0x120\n   el0_svc_common.constprop.0+0x58/0x190\n   do_el0_svc+0x30/0x90\n   el0_svc+0x2c/0xb4\n   el0t_64_sync_handler+0x1a4/0x1b0\n   el0t_64_sync+0x19c/0x1a0"
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/infiniband/hw/hns/hns_roce_hw_v2.c"
                    ],
                    "versions": [
                        {
                            "version": "70f92521584f1d1e8268311ee84413307b0fdea8",
                            "lessThan": "0e23e85d86b78e734dd6654f1b69fbaeb5534c81",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "70f92521584f1d1e8268311ee84413307b0fdea8",
                            "lessThan": "12bcaf87d8b66d8cd812479c8a6349dcb245375c",
                            "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/infiniband/hw/hns/hns_roce_hw_v2.c"
                    ],
                    "versions": [
                        {
                            "version": "5.18",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.18",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.0.8",
                            "lessThanOrEqual": "6.0.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1",
                            "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": "5.18",
                                    "versionEndExcluding": "6.0.8"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.18",
                                    "versionEndExcluding": "6.1"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/0e23e85d86b78e734dd6654f1b69fbaeb5534c81"
                },
                {
                    "url": "https://git.kernel.org/stable/c/12bcaf87d8b66d8cd812479c8a6349dcb245375c"
                }
            ],
            "title": "RDMA/hns: Fix NULL pointer problem in free_mr_init()",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        },
        "adp": [
            {
                "problemTypes": [
                    {
                        "descriptions": [
                            {
                                "type": "CWE",
                                "cweId": "CWE-476",
                                "lang": "en",
                                "description": "CWE-476 NULL Pointer Dereference"
                            }
                        ]
                    }
                ],
                "metrics": [
                    {
                        "cvssV3_1": {
                            "scope": "UNCHANGED",
                            "version": "3.1",
                            "baseScore": 5.5,
                            "attackVector": "LOCAL",
                            "baseSeverity": "MEDIUM",
                            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                            "integrityImpact": "NONE",
                            "userInteraction": "NONE",
                            "attackComplexity": "LOW",
                            "availabilityImpact": "HIGH",
                            "privilegesRequired": "LOW",
                            "confidentialityImpact": "NONE"
                        }
                    },
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2025-10-01T14:56:04.025070Z",
                                "id": "CVE-2022-49930",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2025-10-01T14:56:06.644Z"
                }
            }
        ]
    }
}