{
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    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2025-21978",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2024-12-29T08:45:45.798Z",
        "datePublished": "2025-04-01T15:47:08.168Z",
        "dateUpdated": "2026-05-11T21:10:16.302Z"
    },
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            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/hyperv: Fix address space leak when Hyper-V DRM device is removed\n\nWhen a Hyper-V DRM device is probed, the driver allocates MMIO space for\nthe vram, and maps it cacheable. If the device removed, or in the error\npath for device probing, the MMIO space is released but no unmap is done.\nConsequently the kernel address space for the mapping is leaked.\n\nFix this by adding iounmap() calls in the device removal path, and in the\nerror path during device probing."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/gpu/drm/hyperv/hyperv_drm_drv.c"
                    ],
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                            "lessThan": "ad27b4a51495490b815580d9b935e8eee14d1a9c",
                            "status": "affected",
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                            "status": "affected",
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                            "lessThan": "158242b56bf465a73e1edeac0fe828a8acad4499",
                            "status": "affected",
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                            "status": "affected",
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                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/gpu/drm/hyperv/hyperv_drm_drv.c"
                    ],
                    "versions": [
                        {
                            "version": "6.0",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.0",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.132",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.84",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.20",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
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                        },
                        {
                            "version": "6.13.8",
                            "lessThanOrEqual": "6.13.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.14",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
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                    "nodes": [
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                            "negate": false,
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                                    "vulnerable": true,
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                                    "versionStartIncluding": "6.0",
                                    "versionEndExcluding": "6.1.132"
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                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/c40cd24bfb9bfbb315c118ca14ebe6cf52e2dd1e"
                },
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                    "url": "https://git.kernel.org/stable/c/ad27b4a51495490b815580d9b935e8eee14d1a9c"
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                },
                {
                    "url": "https://git.kernel.org/stable/c/aed709355fd05ef747e1af24a1d5d78cd7feb81e"
                }
            ],
            "title": "drm/hyperv: Fix address space leak when Hyper-V DRM device is removed",
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        "adp": [
            {
                "title": "CVE Program Container",
                "references": [
                    {
                        "url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html"
                    }
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                    "dateUpdated": "2025-11-03T19:40:18.321Z"
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