CVE-2025-37924 (GCVE-0-2025-37924)
Vulnerability from cvelistv5
Published
2025-05-20 15:21
Modified
2025-05-26 05:23
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in kerberos authentication Setting sess->user = NULL was introduced to fix the dangling pointer created by ksmbd_free_user. However, it is possible another thread could be operating on the session and make use of sess->user after it has been passed to ksmbd_free_user but before sess->user is set to NULL.
References
Impacted products
Vendor Product Version
Linux Linux Version: 0626e6641f6b467447c81dd7678a69c66f7746cf
Version: 0626e6641f6b467447c81dd7678a69c66f7746cf
Version: 0626e6641f6b467447c81dd7678a69c66f7746cf
Version: 0626e6641f6b467447c81dd7678a69c66f7746cf
Version: 0626e6641f6b467447c81dd7678a69c66f7746cf
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/smb/server/auth.c",
            "fs/smb/server/smb2pdu.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
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          "product": "Linux",
          "programFiles": [
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            "fs/smb/server/smb2pdu.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.15"
            },
            {
              "lessThan": "5.15",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
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              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.138",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "6.6.90",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.28",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "6.14.*",
              "status": "unaffected",
              "version": "6.14.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.15",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
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              "cpeMatch": [
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                  "vulnerable": true
                },
                {
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              ],
              "negate": false,
              "operator": "OR"
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          ]
        }
      ],
      "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-\u003euser = 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-\u003euser after it has been\npassed to ksmbd_free_user but before sess-\u003euser is set to NULL."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-26T05:23:49.532Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/e34a33d5d7e87399af0a138bb32f6a3e95dd83d2"
        },
        {
          "url": "https://git.kernel.org/stable/c/b447463562238428503cfba1c913261047772f90"
        },
        {
          "url": "https://git.kernel.org/stable/c/e18c616718018dfc440e4a2d2b94e28fe91b1861"
        },
        {
          "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",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-37924",
    "datePublished": "2025-05-20T15:21:52.681Z",
    "dateReserved": "2025-04-16T04:51:23.969Z",
    "dateUpdated": "2025-05-26T05:23:49.532Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-37924\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-05-20T16:15:29.037\",\"lastModified\":\"2025-05-21T20:25:16.407\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"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-\u003euser = 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-\u003euser after it has been\\npassed to ksmbd_free_user but before sess-\u003euser is set to NULL.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ksmbd: correcci\u00f3n del use-after-free en la autenticaci\u00f3n Kerberos. Se introdujo la configuraci\u00f3n sess-\u0026gt;user = NULL para corregir el puntero colgante creado por ksmbd_free_user. Sin embargo, es posible que otro hilo est\u00e9 operando en la sesi\u00f3n y utilice sess-\u0026gt;user despu\u00e9s de que se haya pasado a ksmbd_free_user, pero antes de que sess-\u0026gt;user se establezca en NULL.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/28c756738af44a404a91b77830d017bb0c525890\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b447463562238428503cfba1c913261047772f90\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e18c616718018dfc440e4a2d2b94e28fe91b1861\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e34a33d5d7e87399af0a138bb32f6a3e95dd83d2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e86e9134e1d1c90a960dd57f59ce574d27b9a124\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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