CVE-2025-39825 (GCVE-0-2025-39825)
Vulnerability from cvelistv5
Published
2025-09-16 13:00
Modified
2026-01-02 15:32
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: smb: client: fix race with concurrent opens in rename(2) Besides sending the rename request to the server, the rename process also involves closing any deferred close, waiting for outstanding I/O to complete as well as marking all existing open handles as deleted to prevent them from deferring closes, which increases the race window for potential concurrent opens on the target file. Fix this by unhashing the dentry in advance to prevent any concurrent opens on the target.
References
Impacted products
Vendor Product Version
Linux Linux Version: 78c09634f7dc061a3bd09704cdbebb3762a45cdf
Version: 78c09634f7dc061a3bd09704cdbebb3762a45cdf
Version: 78c09634f7dc061a3bd09704cdbebb3762a45cdf
Version: 78c09634f7dc061a3bd09704cdbebb3762a45cdf
Version: 78c09634f7dc061a3bd09704cdbebb3762a45cdf
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T17:43:46.244Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/smb/client/inode.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "c9e7de284da0be5b44dbe79d71573f9f7f9b144c",
              "status": "affected",
              "version": "78c09634f7dc061a3bd09704cdbebb3762a45cdf",
              "versionType": "git"
            },
            {
              "lessThan": "24b9ed739c8c5b464d983e12cf308982f3ae93c2",
              "status": "affected",
              "version": "78c09634f7dc061a3bd09704cdbebb3762a45cdf",
              "versionType": "git"
            },
            {
              "lessThan": "c9991af5e09924f6f3b3e6996a5e09f9504b4358",
              "status": "affected",
              "version": "78c09634f7dc061a3bd09704cdbebb3762a45cdf",
              "versionType": "git"
            },
            {
              "lessThan": "289f945acb20b9b54fe4d13895e44aa58965ddb2",
              "status": "affected",
              "version": "78c09634f7dc061a3bd09704cdbebb3762a45cdf",
              "versionType": "git"
            },
            {
              "lessThan": "d84291fc7453df7881a970716f8256273aca5747",
              "status": "affected",
              "version": "78c09634f7dc061a3bd09704cdbebb3762a45cdf",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/smb/client/inode.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.13"
            },
            {
              "lessThan": "5.13",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.150",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.104",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.45",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.16.*",
              "status": "unaffected",
              "version": "6.16.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.17",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.150",
                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.104",
                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.45",
                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.16.5",
                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.17",
                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: fix race with concurrent opens in rename(2)\n\nBesides sending the rename request to the server, the rename process\nalso involves closing any deferred close, waiting for outstanding I/O\nto complete as well as marking all existing open handles as deleted to\nprevent them from deferring closes, which increases the race window\nfor potential concurrent opens on the target file.\n\nFix this by unhashing the dentry in advance to prevent any concurrent\nopens on the target."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-01-02T15:32:35.968Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/c9e7de284da0be5b44dbe79d71573f9f7f9b144c"
        },
        {
          "url": "https://git.kernel.org/stable/c/24b9ed739c8c5b464d983e12cf308982f3ae93c2"
        },
        {
          "url": "https://git.kernel.org/stable/c/c9991af5e09924f6f3b3e6996a5e09f9504b4358"
        },
        {
          "url": "https://git.kernel.org/stable/c/289f945acb20b9b54fe4d13895e44aa58965ddb2"
        },
        {
          "url": "https://git.kernel.org/stable/c/d84291fc7453df7881a970716f8256273aca5747"
        }
      ],
      "title": "smb: client: fix race with concurrent opens in rename(2)",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-39825",
    "datePublished": "2025-09-16T13:00:23.897Z",
    "dateReserved": "2025-04-16T07:20:57.140Z",
    "dateUpdated": "2026-01-02T15:32:35.968Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.