ghsa-c3j4-c39c-w5r2
Vulnerability from github
Published
2025-09-05 18:31
Modified
2025-09-05 18:31
VLAI Severity ?
Details
In the Linux kernel, the following vulnerability has been resolved:
smb/server: avoid deadlock when linking with ReplaceIfExists
If smb2_create_link() is called with ReplaceIfExists set and the name does exist then a deadlock will happen.
ksmbd_vfs_kern_path_locked() will return with success and the parent directory will be locked. ksmbd_vfs_remove_file() will then remove the file. ksmbd_vfs_link() will then be called while the parent is still locked. It will try to lock the same parent and will deadlock.
This patch moves the ksmbd_vfs_kern_path_unlock() call to before ksmbd_vfs_link() and then simplifies the code, removing the file_present flag variable.
{
"affected": [],
"aliases": [
"CVE-2025-38711"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-09-04T16:15:40Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb/server: avoid deadlock when linking with ReplaceIfExists\n\nIf smb2_create_link() is called with ReplaceIfExists set and the name\ndoes exist then a deadlock will happen.\n\nksmbd_vfs_kern_path_locked() will return with success and the parent\ndirectory will be locked. ksmbd_vfs_remove_file() will then remove the\nfile. ksmbd_vfs_link() will then be called while the parent is still\nlocked. It will try to lock the same parent and will deadlock.\n\nThis patch moves the ksmbd_vfs_kern_path_unlock() call to *before*\nksmbd_vfs_link() and then simplifies the code, removing the file_present\nflag variable.",
"id": "GHSA-c3j4-c39c-w5r2",
"modified": "2025-09-05T18:31:17Z",
"published": "2025-09-05T18:31:16Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-38711"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/1e858a7a51c7b8b009d8f246de7ceb7743b44a71"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/814cfdb6358d9b84fcbec9918c8f938cc096a43a"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/9d5012ffe14120f978ee34aef4df3d6cb026b7c4"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/a726fef6d7d4cfc365d3434e3916dbfe78991a33"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/a7dddd62578c2eb6cb28b8835556a121b5157323"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/ac98d54630d5b52e3f684d872f0d82c06c418ea9"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d5fc1400a34b4ea5e8f2ce296ea12bf8c8421694"
}
],
"schema_version": "1.4.0",
"severity": []
}
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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.
- 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.
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