{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2022-50285",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-09-15T13:58:00.977Z",
        "datePublished": "2025-09-15T14:21:21.504Z",
        "dateUpdated": "2026-05-23T15:24:08.748Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-23T15:24:08.748Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm,hugetlb: take hugetlb_lock before decrementing h->resv_huge_pages\n\nThe h->*_huge_pages counters are protected by the hugetlb_lock, but\nalloc_huge_page has a corner case where it can decrement the counter\noutside of the lock.\n\nThis could lead to a corrupted value of h->resv_huge_pages, which we have\nobserved on our systems.\n\nTake the hugetlb_lock before decrementing h->resv_huge_pages to avoid a\npotential race."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "mm/hugetlb.c"
                    ],
                    "versions": [
                        {
                            "version": "a88c769548047b21f76fd71e04b6a3300ff17160",
                            "lessThan": "3e50a07b6a5fcd39df1534d3fdaca4292a65efe6",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a88c769548047b21f76fd71e04b6a3300ff17160",
                            "lessThan": "629c986e19fe9481227c7cdfd9a105bbc104d245",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a88c769548047b21f76fd71e04b6a3300ff17160",
                            "lessThan": "2b35432d324898ec41beb27031d2a1a864a4d40e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a88c769548047b21f76fd71e04b6a3300ff17160",
                            "lessThan": "11993652d0b49e27272db0a37aa828d8a3a4b92b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a88c769548047b21f76fd71e04b6a3300ff17160",
                            "lessThan": "568e3812b1778b4c0c229649b59977d88f400ece",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a88c769548047b21f76fd71e04b6a3300ff17160",
                            "lessThan": "112a005d1ded04a4b41b6d01833cc0bda90625cc",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a88c769548047b21f76fd71e04b6a3300ff17160",
                            "lessThan": "c828fab903725279aa9dc6ae3d44bb7e4778f92c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a88c769548047b21f76fd71e04b6a3300ff17160",
                            "lessThan": "12df140f0bdfae5dcfc81800970dd7f6f632e00c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "3f5fae4d1a3189d95b02b4b45e1218df147122bc",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "4.3.6",
                            "lessThan": "4.4",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "mm/hugetlb.c"
                    ],
                    "versions": [
                        {
                            "version": "4.4",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.4",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "4.9.332",
                            "lessThanOrEqual": "4.9.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "4.14.298",
                            "lessThanOrEqual": "4.14.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "4.19.264",
                            "lessThanOrEqual": "4.19.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.4.223",
                            "lessThanOrEqual": "5.4.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.153",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.76",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.0.6",
                            "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": "4.4",
                                    "versionEndExcluding": "4.9.332"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.4",
                                    "versionEndExcluding": "4.14.298"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.4",
                                    "versionEndExcluding": "4.19.264"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.4",
                                    "versionEndExcluding": "5.4.223"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.4",
                                    "versionEndExcluding": "5.10.153"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.4",
                                    "versionEndExcluding": "5.15.76"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.4",
                                    "versionEndExcluding": "6.0.6"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.4",
                                    "versionEndExcluding": "6.1"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.3.6"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/3e50a07b6a5fcd39df1534d3fdaca4292a65efe6"
                },
                {
                    "url": "https://git.kernel.org/stable/c/629c986e19fe9481227c7cdfd9a105bbc104d245"
                },
                {
                    "url": "https://git.kernel.org/stable/c/2b35432d324898ec41beb27031d2a1a864a4d40e"
                },
                {
                    "url": "https://git.kernel.org/stable/c/11993652d0b49e27272db0a37aa828d8a3a4b92b"
                },
                {
                    "url": "https://git.kernel.org/stable/c/568e3812b1778b4c0c229649b59977d88f400ece"
                },
                {
                    "url": "https://git.kernel.org/stable/c/112a005d1ded04a4b41b6d01833cc0bda90625cc"
                },
                {
                    "url": "https://git.kernel.org/stable/c/c828fab903725279aa9dc6ae3d44bb7e4778f92c"
                },
                {
                    "url": "https://git.kernel.org/stable/c/12df140f0bdfae5dcfc81800970dd7f6f632e00c"
                }
            ],
            "title": "mm,hugetlb: take hugetlb_lock before decrementing h->resv_huge_pages",
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        }
    }
}