github - ghsa-3f3q-q5cj-phc5

GHSA-3F3Q-Q5CJ-PHC5

Vulnerability from github – Published: 2025-09-16 15:32 – Updated: 2025-11-03 18:31

Details

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.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-39825"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-09-16T13:16:01Z",
    "severity": null
  },
  "details": "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.",
  "id": "GHSA-3f3q-q5cj-phc5",
  "modified": "2025-11-03T18:31:41Z",
  "published": "2025-09-16T15:32:35Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-39825"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/24b9ed739c8c5b464d983e12cf308982f3ae93c2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/289f945acb20b9b54fe4d13895e44aa58965ddb2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c9991af5e09924f6f3b3e6996a5e09f9504b4358"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c9e7de284da0be5b44dbe79d71573f9f7f9b144c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d84291fc7453df7881a970716f8256273aca5747"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2025-39825 (GCVE-0-2025-39825)

Vulnerability from cvelistv5 – Published: 2025-09-16 13:00 – Updated: 2025-11-03 17:43

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.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/c9e7de284da0be5b4…
	https://git.kernel.org/stable/c/24b9ed739c8c5b464…
	https://git.kernel.org/stable/c/c9991af5e09924f6f…
	https://git.kernel.org/stable/c/289f945acb20b9b54…
	https://git.kernel.org/stable/c/d84291fc7453df788…

Impacted products

Vendor

Product

Version

Linux

Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < c9e7de284da0be5b44dbe79d71573f9f7f9b144c (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 24b9ed739c8c5b464d983e12cf308982f3ae93c2 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < c9991af5e09924f6f3b3e6996a5e09f9504b4358 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 289f945acb20b9b54fe4d13895e44aa58965ddb2 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < d84291fc7453df7881a970716f8256273aca5747 (git)

Linux

Unaffected: 6.1.150 , ≤ 6.1.* (semver)
Unaffected: 6.6.104 , ≤ 6.6.* (semver)
Unaffected: 6.12.45 , ≤ 6.12.* (semver)
Unaffected: 6.16.5 , ≤ 6.16.* (semver)
Unaffected: 6.17 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-3F3Q-Q5CJ-PHC5

CVE-2025-39825 (GCVE-0-2025-39825)

Tags

Sightings

Nomenclature