CVE-2025-39697 (GCVE-0-2025-39697)

Vulnerability from cvelistv5 – Published: 2025-09-05 17:21 – Updated: 2026-06-11 18:44
VLAI
Title
NFS: Fix a race when updating an existing write
Summary
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().
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: bd37d6fce184836bd5e7cd90ce40116a4fadaf2a , < 0ff42a32784e0f2cb46a46da8e9f473538c13e1b (git)
Affected: bd37d6fce184836bd5e7cd90ce40116a4fadaf2a , < f230d40147cc37eb3aef4d50e2e2c06ea73d9a77 (git)
Affected: bd37d6fce184836bd5e7cd90ce40116a4fadaf2a , < c32e3c71aaa1c1ba05da88605e2ddd493c58794f (git)
Affected: bd37d6fce184836bd5e7cd90ce40116a4fadaf2a , < 181feb41f0b268e6288bf9a7b984624d7fe2031d (git)
Affected: bd37d6fce184836bd5e7cd90ce40116a4fadaf2a , < 92278ae36935a54e65fef9f8ea8efe7e80481ace (git)
Affected: bd37d6fce184836bd5e7cd90ce40116a4fadaf2a , < 202a3432d21ac060629a760fff3b0a39859da3ea (git)
Affected: bd37d6fce184836bd5e7cd90ce40116a4fadaf2a , < 76d2e3890fb169168c73f2e4f8375c7cc24a765e (git)
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Linux Linux Affected: 4.14
Unaffected: 0 , < 4.14 (semver)
Unaffected: 5.10.242 , ≤ 5.10.* (semver)
Unaffected: 5.15.191 , ≤ 5.15.* (semver)
Unaffected: 6.1.150 , ≤ 6.1.* (semver)
Unaffected: 6.6.104 , ≤ 6.6.* (semver)
Unaffected: 6.12.44 , ≤ 6.12.* (semver)
Unaffected: 6.16.4 , ≤ 6.16.* (semver)
Unaffected: 6.17 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Siemens SIMATIC CN 4100 Affected: 0 , < V5.0 (custom)
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Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.5 , < * (custom)
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Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP Affected: V3.1.5 , < * (custom)
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Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.5 , < * (custom)
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Show details on NVD website
To clipboard 

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\"version\": \"bd37d6fce184836bd5e7cd90ce40116a4fadaf2a\", \"lessThan\": \"0ff42a32784e0f2cb46a46da8e9f473538c13e1b\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"bd37d6fce184836bd5e7cd90ce40116a4fadaf2a\", \"lessThan\": \"f230d40147cc37eb3aef4d50e2e2c06ea73d9a77\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"bd37d6fce184836bd5e7cd90ce40116a4fadaf2a\", \"lessThan\": \"c32e3c71aaa1c1ba05da88605e2ddd493c58794f\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"bd37d6fce184836bd5e7cd90ce40116a4fadaf2a\", \"lessThan\": \"181feb41f0b268e6288bf9a7b984624d7fe2031d\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"bd37d6fce184836bd5e7cd90ce40116a4fadaf2a\", \"lessThan\": \"92278ae36935a54e65fef9f8ea8efe7e80481ace\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"bd37d6fce184836bd5e7cd90ce40116a4fadaf2a\", \"lessThan\": \"202a3432d21ac060629a760fff3b0a39859da3ea\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"bd37d6fce184836bd5e7cd90ce40116a4fadaf2a\", \"lessThan\": \"76d2e3890fb169168c73f2e4f8375c7cc24a765e\", \"versionType\": \"git\"}], \"programFiles\": [\"fs/nfs/pagelist.c\", \"fs/nfs/write.c\", \"include/linux/nfs_page.h\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"4.14\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"4.14\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.10.242\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.191\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.150\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.104\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.12.44\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.12.*\"}, {\"status\": \"unaffected\", \"version\": \"6.16.4\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.16.*\"}, {\"status\": \"unaffected\", \"version\": \"6.17\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"fs/nfs/pagelist.c\", \"fs/nfs/write.c\", \"include/linux/nfs_page.h\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/0ff42a32784e0f2cb46a46da8e9f473538c13e1b\"}, {\"url\": \"https://git.kernel.org/stable/c/f230d40147cc37eb3aef4d50e2e2c06ea73d9a77\"}, {\"url\": \"https://git.kernel.org/stable/c/c32e3c71aaa1c1ba05da88605e2ddd493c58794f\"}, {\"url\": \"https://git.kernel.org/stable/c/181feb41f0b268e6288bf9a7b984624d7fe2031d\"}, {\"url\": \"https://git.kernel.org/stable/c/92278ae36935a54e65fef9f8ea8efe7e80481ace\"}, {\"url\": \"https://git.kernel.org/stable/c/202a3432d21ac060629a760fff3b0a39859da3ea\"}, {\"url\": \"https://git.kernel.org/stable/c/76d2e3890fb169168c73f2e4f8375c7cc24a765e\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"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().\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.242\", \"versionStartIncluding\": \"4.14\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.191\", \"versionStartIncluding\": \"4.14\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.150\", \"versionStartIncluding\": \"4.14\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.104\", \"versionStartIncluding\": \"4.14\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12.44\", \"versionStartIncluding\": \"4.14\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.16.4\", \"versionStartIncluding\": \"4.14\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.17\", \"versionStartIncluding\": \"4.14\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-11T21:34:30.640Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2025-39697\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-06-11T18:44:22.767Z\", \"dateReserved\": \"2025-04-16T07:20:57.115Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-09-05T17:21:03.178Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

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.