{
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    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2025-37924",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-04-16T04:51:23.969Z",
        "datePublished": "2025-05-20T15:21:52.681Z",
        "dateUpdated": "2026-08-05T11:58:25.065Z"
    },
    "containers": {
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            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-05T11:58:25.065Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: fix use-after-free in kerberos authentication\n\nSetting sess->user = NULL was introduced to fix the dangling pointer\ncreated by ksmbd_free_user. However, it is possible another thread could\nbe operating on the session and make use of sess->user after it has been\npassed to ksmbd_free_user but before sess->user is set to NULL."
                }
            ],
            "metrics": [
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                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                        "baseScore": 9.8,
                        "baseSeverity": "CRITICAL"
                    },
                    "scenarios": [
                        {
                            "lang": "en",
                            "value": "ksmbd kerberos authentication UAF. sess->user freed by one thread while another thread still accesses it during concurrent session setup. Attacker opens two connections to same session and sends concurrent SESSION_SETUP requests, controlling both sides of the race. Network-reachable, pre-authentication."
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/smb/server/auth.c",
                        "fs/smb/server/smb2pdu.c"
                    ],
                    "versions": [
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                            "version": "0626e6641f6b467447c81dd7678a69c66f7746cf",
                            "lessThan": "e34a33d5d7e87399af0a138bb32f6a3e95dd83d2",
                            "status": "affected",
                            "versionType": "git"
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                            "lessThan": "b447463562238428503cfba1c913261047772f90",
                            "status": "affected",
                            "versionType": "git"
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                            "version": "0626e6641f6b467447c81dd7678a69c66f7746cf",
                            "lessThan": "e18c616718018dfc440e4a2d2b94e28fe91b1861",
                            "status": "affected",
                            "versionType": "git"
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                            "lessThan": "28c756738af44a404a91b77830d017bb0c525890",
                            "status": "affected",
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                            "lessThan": "e86e9134e1d1c90a960dd57f59ce574d27b9a124",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/smb/server/auth.c",
                        "fs/smb/server/smb2pdu.c"
                    ],
                    "versions": [
                        {
                            "version": "5.15",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.15",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.138",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.90",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.28",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.14.6",
                            "lessThanOrEqual": "6.14.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.15",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
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                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                                    "versionEndExcluding": "6.1.138"
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            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/e34a33d5d7e87399af0a138bb32f6a3e95dd83d2"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b447463562238428503cfba1c913261047772f90"
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                {
                    "url": "https://git.kernel.org/stable/c/28c756738af44a404a91b77830d017bb0c525890"
                },
                {
                    "url": "https://git.kernel.org/stable/c/e86e9134e1d1c90a960dd57f59ce574d27b9a124"
                }
            ],
            "title": "ksmbd: fix use-after-free in kerberos authentication",
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        "adp": [
            {
                "title": "CVE Program Container",
                "references": [
                    {
                        "url": "https://lists.debian.org/debian-lts-announce/2025/08/msg00010.html"
                    }
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