{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2022-50756",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-12-24T13:02:21.545Z",
        "datePublished": "2025-12-24T13:05:49.635Z",
        "dateUpdated": "2026-05-11T19:24:54.737Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T19:24:54.737Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvme-pci: fix mempool alloc size\n\nConvert the max size to bytes to match the units of the divisor that\ncalculates the worst-case number of PRP entries.\n\nThe result is used to determine how many PRP Lists are required. The\ncode was previously rounding this to 1 list, but we can require 2 in the\nworst case. In that scenario, the driver would corrupt memory beyond the\nsize provided by the mempool.\n\nWhile unlikely to occur (you'd need a 4MB in exactly 127 phys segments\non a queue that doesn't support SGLs), this memory corruption has been\nobserved by kfence."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/nvme/host/pci.c"
                    ],
                    "versions": [
                        {
                            "version": "943e942e6266f22babee5efeb00f8f672fbff5bd",
                            "lessThan": "dfb6d54893d544151e7f480bc44cfe7823f5ad23",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "943e942e6266f22babee5efeb00f8f672fbff5bd",
                            "lessThan": "9141144b37f30e3e7fa024bcfa0a13011e546ba9",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "943e942e6266f22babee5efeb00f8f672fbff5bd",
                            "lessThan": "e1777b4286e526c58b4ee699344b0ad85aaf83a0",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "943e942e6266f22babee5efeb00f8f672fbff5bd",
                            "lessThan": "b1814724e0d7162bdf4799f2d565381bc2251c63",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "943e942e6266f22babee5efeb00f8f672fbff5bd",
                            "lessThan": "c89a529e823d51dd23c7ec0c047c7a454a428541",
                            "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/nvme/host/pci.c"
                    ],
                    "versions": [
                        {
                            "version": "4.18",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.18",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.163",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.87",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.0.17",
                            "lessThanOrEqual": "6.0.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.3",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.2",
                            "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": "4.18",
                                    "versionEndExcluding": "5.10.163"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.18",
                                    "versionEndExcluding": "5.15.87"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.18",
                                    "versionEndExcluding": "6.0.17"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.18",
                                    "versionEndExcluding": "6.1.3"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.18",
                                    "versionEndExcluding": "6.2"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/dfb6d54893d544151e7f480bc44cfe7823f5ad23"
                },
                {
                    "url": "https://git.kernel.org/stable/c/9141144b37f30e3e7fa024bcfa0a13011e546ba9"
                },
                {
                    "url": "https://git.kernel.org/stable/c/e1777b4286e526c58b4ee699344b0ad85aaf83a0"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b1814724e0d7162bdf4799f2d565381bc2251c63"
                },
                {
                    "url": "https://git.kernel.org/stable/c/c89a529e823d51dd23c7ec0c047c7a454a428541"
                }
            ],
            "title": "nvme-pci: fix mempool alloc size",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}