{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2022-49895",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-05-01T14:05:17.243Z",
        "datePublished": "2025-05-01T14:10:37.707Z",
        "dateUpdated": "2026-05-11T19:08:49.162Z"
    },
    "containers": {
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                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T19:08:49.162Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncxl/region: Fix decoder allocation crash\n\nWhen an intermediate port's decoders have been exhausted by existing\nregions, and creating a new region with the port in question in it's\nhierarchical path is attempted, cxl_port_attach_region() fails to find a\nport decoder (as would be expected), and drops into the failure / cleanup\npath.\n\nHowever, during cleanup of the region reference, a sanity check attempts\nto dereference the decoder, which in the above case didn't exist. This\ncauses a NULL pointer dereference BUG.\n\nTo fix this, refactor the decoder allocation and de-allocation into\nhelper routines, and in this 'free' routine, check that the decoder,\n@cxld, is valid before attempting any operations on it."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/cxl/core/region.c"
                    ],
                    "versions": [
                        {
                            "version": "384e624bb211b406db40edc900bb51af8bb267d0",
                            "lessThan": "c6813b5610ac53af73edd87a660d23a0511faa47",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "384e624bb211b406db40edc900bb51af8bb267d0",
                            "lessThan": "71ee71d7adcba648077997a29a91158d20c40b09",
                            "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/cxl/core/region.c"
                    ],
                    "versions": [
                        {
                            "version": "6.0",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.0",
                            "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": "6.0",
                                    "versionEndExcluding": "6.0.8"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.0",
                                    "versionEndExcluding": "6.1"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/c6813b5610ac53af73edd87a660d23a0511faa47"
                },
                {
                    "url": "https://git.kernel.org/stable/c/71ee71d7adcba648077997a29a91158d20c40b09"
                }
            ],
            "title": "cxl/region: Fix decoder allocation crash",
            "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": "2025-10-01T16:02:07.580579Z",
                                "id": "CVE-2022-49895",
                                "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": "2025-10-01T16:02:10.001Z"
                }
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    }
}