github - ghsa-45gw-fx24-h4pv

ghsa-45gw-fx24-h4pv

Vulnerability from github

Published

2025-05-01 15:31

Modified

2025-05-01 15:31

Details

In the Linux kernel, the following vulnerability has been resolved:

ksmbd: Fix dangling pointer in krb_authenticate

krb_authenticate frees sess->user and does not set the pointer to NULL. It calls ksmbd_krb5_authenticate to reinitialise sess->user but that function may return without doing so. If that happens then smb2_sess_setup, which calls krb_authenticate, will be accessing free'd memory when it later uses sess->user.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-37778"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-05-01T14:15:41Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: Fix dangling pointer in krb_authenticate\n\nkrb_authenticate frees sess-\u003euser and does not set the pointer\nto NULL. It calls ksmbd_krb5_authenticate to reinitialise\nsess-\u003euser but that function may return without doing so. If\nthat happens then smb2_sess_setup, which calls krb_authenticate,\nwill be accessing free\u0027d memory when it later uses sess-\u003euser.",
  "id": "GHSA-45gw-fx24-h4pv",
  "modified": "2025-05-01T15:31:44Z",
  "published": "2025-05-01T15:31:44Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-37778"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1db2451de23e98bc864c6a6e52aa0d82c91cb325"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1e440d5b25b7efccb3defe542a73c51005799a5f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6e30c0e10210c714f3d4453dc258d4abcc70364e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d5b554bc8d554ed6ddf443d3db2fad9f665cec10"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e83e39a5f6a01a81411a4558a59a10f87aa88dd6"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

cve-2025-37778

Vulnerability from cvelistv5

Published

2025-05-01 13:07

Modified

2025-05-01 13:07

Severity ?

Summary

ksmbd: Fix dangling pointer in krb_authenticate

References

▼	URL	Tags
	https://git.kernel.org/stable/c/d5b554bc8d554ed6ddf443d3db2fad9f665cec10
	https://git.kernel.org/stable/c/1db2451de23e98bc864c6a6e52aa0d82c91cb325
	https://git.kernel.org/stable/c/6e30c0e10210c714f3d4453dc258d4abcc70364e
	https://git.kernel.org/stable/c/e83e39a5f6a01a81411a4558a59a10f87aa88dd6
	https://git.kernel.org/stable/c/1e440d5b25b7efccb3defe542a73c51005799a5f

Impacted products

▼	Vendor	Product
	Linux	Linux
	Linux	Linux

Show details on NVD website

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/smb/server/smb2pdu.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "d5b554bc8d554ed6ddf443d3db2fad9f665cec10",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
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            },
            {
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              "status": "affected",
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              "versionType": "git"
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            {
              "lessThan": "6e30c0e10210c714f3d4453dc258d4abcc70364e",
              "status": "affected",
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              "versionType": "git"
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              "versionType": "git"
            },
            {
              "lessThan": "1e440d5b25b7efccb3defe542a73c51005799a5f",
              "status": "affected",
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          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.135",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "6.6.88",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.25",
              "versionType": "semver"
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              "lessThanOrEqual": "6.14.*",
              "status": "unaffected",
              "version": "6.14.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.15-rc3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: Fix dangling pointer in krb_authenticate\n\nkrb_authenticate frees sess-\u003euser and does not set the pointer\nto NULL. It calls ksmbd_krb5_authenticate to reinitialise\nsess-\u003euser but that function may return without doing so. If\nthat happens then smb2_sess_setup, which calls krb_authenticate,\nwill be accessing free\u0027d memory when it later uses sess-\u003euser."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-01T13:07:16.472Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/d5b554bc8d554ed6ddf443d3db2fad9f665cec10"
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          "url": "https://git.kernel.org/stable/c/6e30c0e10210c714f3d4453dc258d4abcc70364e"
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        {
          "url": "https://git.kernel.org/stable/c/e83e39a5f6a01a81411a4558a59a10f87aa88dd6"
        },
        {
          "url": "https://git.kernel.org/stable/c/1e440d5b25b7efccb3defe542a73c51005799a5f"
        }
      ],
      "title": "ksmbd: Fix dangling pointer in krb_authenticate",
      "x_generator": {
        "engine": "bippy-1.1.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-37778",
    "datePublished": "2025-05-01T13:07:16.472Z",
    "dateReserved": "2025-04-16T04:51:23.940Z",
    "dateUpdated": "2025-05-01T13:07:16.472Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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