ghsa-3fr6-pgc4-qmrv
Vulnerability from github
Published
2025-09-05 18:31
Modified
2025-09-08 09:31
Details
In the Linux kernel, the following vulnerability has been resolved:
NFS: Fix a race when updating an existing write
After nfs_lock_and_join_requests() tests for whether the request is still attached to the mapping, nothing prevents a call to nfs_inode_remove_request() from succeeding until we actually lock the page group. The reason is that whoever called nfs_inode_remove_request() doesn't necessarily have a lock on the page group head.
So in order to avoid races, let's take the page group lock earlier in nfs_lock_and_join_requests(), and hold it across the removal of the request in nfs_inode_remove_request().
{
"affected": [],
"aliases": [
"CVE-2025-39697"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-09-05T18:15:46Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nNFS: Fix a race when updating an existing write\n\nAfter nfs_lock_and_join_requests() tests for whether the request is\nstill attached to the mapping, nothing prevents a call to\nnfs_inode_remove_request() from succeeding until we actually lock the\npage group.\nThe reason is that whoever called nfs_inode_remove_request() doesn\u0027t\nnecessarily have a lock on the page group head.\n\nSo in order to avoid races, let\u0027s take the page group lock earlier in\nnfs_lock_and_join_requests(), and hold it across the removal of the\nrequest in nfs_inode_remove_request().",
"id": "GHSA-3fr6-pgc4-qmrv",
"modified": "2025-09-08T09:31:09Z",
"published": "2025-09-05T18:31:27Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-39697"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/0ff42a32784e0f2cb46a46da8e9f473538c13e1b"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/181feb41f0b268e6288bf9a7b984624d7fe2031d"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/202a3432d21ac060629a760fff3b0a39859da3ea"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/76d2e3890fb169168c73f2e4f8375c7cc24a765e"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/92278ae36935a54e65fef9f8ea8efe7e80481ace"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/c32e3c71aaa1c1ba05da88605e2ddd493c58794f"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f230d40147cc37eb3aef4d50e2e2c06ea73d9a77"
}
],
"schema_version": "1.4.0",
"severity": []
}
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