{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2025-39951",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-04-16T07:20:57.148Z",
        "datePublished": "2025-10-04T07:31:11.684Z",
        "dateUpdated": "2026-07-30T05:58:46.858Z"
    },
    "containers": {
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            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-07-30T05:58:46.858Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\num: virtio_uml: Fix use-after-free after put_device in probe\n\nWhen register_virtio_device() fails in virtio_uml_probe(),\nthe code sets vu_dev->registered = 1 even though\nthe device was not successfully registered.\nThis can lead to use-after-free or other issues."
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                        "baseScore": 7.8,
                        "baseSeverity": "HIGH"
                    }
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "arch/um/drivers/virtio_uml.c"
                    ],
                    "versions": [
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                            "version": "04e5b1fb01834a602acaae2276b67a783a8c6159",
                            "lessThan": "14c231959a16ca41bfdcaede72483362a8c645d7",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "04e5b1fb01834a602acaae2276b67a783a8c6159",
                            "lessThan": "5e94e44c9cb30d7a383d8ac227f24a8c9326b770",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "04e5b1fb01834a602acaae2276b67a783a8c6159",
                            "lessThan": "aaf900a83508c8cd5cdf765e7749f9076196ec7f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "04e5b1fb01834a602acaae2276b67a783a8c6159",
                            "lessThan": "4f364023ddcfe83f7073b973a9cb98584b7f2a46",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "04e5b1fb01834a602acaae2276b67a783a8c6159",
                            "lessThan": "00e98b5a69034b251bb36dc6e7123d7648e218e4",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "04e5b1fb01834a602acaae2276b67a783a8c6159",
                            "lessThan": "c2ff91255e0157b356cff115d8dc3eeb5162edf2",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "04e5b1fb01834a602acaae2276b67a783a8c6159",
                            "lessThan": "7ebf70cf181651fe3f2e44e95e7e5073d594c9c0",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "arch/um/drivers/virtio_uml.c"
                    ],
                    "versions": [
                        {
                            "version": "5.5",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.5",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.245",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.194",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.154",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.108",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.49",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.16.9",
                            "lessThanOrEqual": "6.16.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.17",
                            "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": "5.5",
                                    "versionEndExcluding": "5.10.245"
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                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                                    "versionEndExcluding": "5.15.194"
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            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/14c231959a16ca41bfdcaede72483362a8c645d7"
                },
                {
                    "url": "https://git.kernel.org/stable/c/5e94e44c9cb30d7a383d8ac227f24a8c9326b770"
                },
                {
                    "url": "https://git.kernel.org/stable/c/aaf900a83508c8cd5cdf765e7749f9076196ec7f"
                },
                {
                    "url": "https://git.kernel.org/stable/c/4f364023ddcfe83f7073b973a9cb98584b7f2a46"
                },
                {
                    "url": "https://git.kernel.org/stable/c/00e98b5a69034b251bb36dc6e7123d7648e218e4"
                },
                {
                    "url": "https://git.kernel.org/stable/c/c2ff91255e0157b356cff115d8dc3eeb5162edf2"
                },
                {
                    "url": "https://git.kernel.org/stable/c/7ebf70cf181651fe3f2e44e95e7e5073d594c9c0"
                }
            ],
            "title": "um: virtio_uml: Fix use-after-free after put_device in probe",
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}