{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2022-49902",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-05-01T14:05:17.245Z",
        "datePublished": "2025-05-01T14:10:47.608Z",
        "dateUpdated": "2026-05-11T19:08:56.015Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T19:08:56.015Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nblock: Fix possible memory leak for rq_wb on add_disk failure\n\nkmemleak reported memory leaks in device_add_disk():\n\nkmemleak: 3 new suspected memory leaks\n\nunreferenced object 0xffff88800f420800 (size 512):\n  comm \"modprobe\", pid 4275, jiffies 4295639067 (age 223.512s)\n  hex dump (first 32 bytes):\n    04 00 00 00 08 00 00 00 01 00 00 00 00 00 00 00  ................\n    00 e1 f5 05 00 00 00 00 00 00 00 00 00 00 00 00  ................\n  backtrace:\n    [<00000000d3662699>] kmalloc_trace+0x26/0x60\n    [<00000000edc7aadc>] wbt_init+0x50/0x6f0\n    [<0000000069601d16>] wbt_enable_default+0x157/0x1c0\n    [<0000000028fc393f>] blk_register_queue+0x2a4/0x420\n    [<000000007345a042>] device_add_disk+0x6fd/0xe40\n    [<0000000060e6aab0>] nbd_dev_add+0x828/0xbf0 [nbd]\n    ...\n\nIt is because the memory allocated in wbt_enable_default() is not\nreleased in device_add_disk() error path.\nNormally, these memory are freed in:\n\ndel_gendisk()\n  rq_qos_exit()\n    rqos->ops->exit(rqos);\n      wbt_exit()\n\nSo rq_qos_exit() is called to free the rq_wb memory for wbt_init().\nHowever in the error path of device_add_disk(), only\nblk_unregister_queue() is called and make rq_wb memory leaked.\n\nAdd rq_qos_exit() to the error path to fix it."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "block/genhd.c"
                    ],
                    "versions": [
                        {
                            "version": "83cbce9574462c6b4eed6797bdaf18fae6859ab3",
                            "lessThan": "4e68c5da60cd79950bd56287ae80b39d6261f995",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "83cbce9574462c6b4eed6797bdaf18fae6859ab3",
                            "lessThan": "528677d3b4af985445bd4ac667485ded1ed11220",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "83cbce9574462c6b4eed6797bdaf18fae6859ab3",
                            "lessThan": "fa81cbafbf5764ad5053512152345fab37a1fe18",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "block/genhd.c"
                    ],
                    "versions": [
                        {
                            "version": "5.15",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.15",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.78",
                            "lessThanOrEqual": "5.15.*",
                            "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": "5.15",
                                    "versionEndExcluding": "5.15.78"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.15",
                                    "versionEndExcluding": "6.0.8"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.15",
                                    "versionEndExcluding": "6.1"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/4e68c5da60cd79950bd56287ae80b39d6261f995"
                },
                {
                    "url": "https://git.kernel.org/stable/c/528677d3b4af985445bd4ac667485ded1ed11220"
                },
                {
                    "url": "https://git.kernel.org/stable/c/fa81cbafbf5764ad5053512152345fab37a1fe18"
                }
            ],
            "title": "block: Fix possible memory leak for rq_wb on add_disk failure",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        },
        "adp": [
            {
                "problemTypes": [
                    {
                        "descriptions": [
                            {
                                "type": "CWE",
                                "cweId": "CWE-401",
                                "lang": "en",
                                "description": "CWE-401 Missing Release of Memory after Effective Lifetime"
                            }
                        ]
                    }
                ],
                "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": "2025-10-01T14:59:03.595609Z",
                                "id": "CVE-2022-49902",
                                "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": "2025-10-01T14:59:06.935Z"
                }
            }
        ]
    }
}