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CVE-2025-38393 (GCVE-0-2025-38393)

Vulnerability from cvelistv5 – Published: 2025-07-25 12:53 – Updated: 2026-08-05 12:01
VLAI
Title
NFSv4/pNFS: Fix a race to wake on NFS_LAYOUT_DRAIN
Summary
In the Linux kernel, the following vulnerability has been resolved: NFSv4/pNFS: Fix a race to wake on NFS_LAYOUT_DRAIN We found a few different systems hung up in writeback waiting on the same page lock, and one task waiting on the NFS_LAYOUT_DRAIN bit in pnfs_update_layout(), however the pnfs_layout_hdr's plh_outstanding count was zero. It seems most likely that this is another race between the waiter and waker similar to commit ed0172af5d6f ("SUNRPC: Fix a race to wake a sync task"). Fix it up by applying the advised barrier.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 8acc3e228e1c90bd410f73597a4549e0409f22d6 , < 08287df60bac5b008b6bcdb03053988335d3d282 (git)
Affected: ec23a86e060cbe30b62eb2955adc97c92d80cc4c , < 8846fd02c98da8b79e6343a20e6071be6f372180 (git)
Affected: 880265c77ac415090090d1fe72a188fee71cb458 , < e4b13885e7ef1e64e45268feef1e5f0707c47e72 (git)
Affected: 880265c77ac415090090d1fe72a188fee71cb458 , < 8ca65fa71024a1767a59ffbc6a6e2278af84735e (git)
Affected: 880265c77ac415090090d1fe72a188fee71cb458 , < 864a54c1243ed3ca60baa4bc492dede1361f4c83 (git)
Affected: 880265c77ac415090090d1fe72a188fee71cb458 , < 1f4da20080718f258e189a2c5f515385fa393da6 (git)
Affected: 880265c77ac415090090d1fe72a188fee71cb458 , < c01776287414ca43412d1319d2877cbad65444ac (git)
Affected: f133819e24e78f3aaaa00e9fa2b816d5f73fd172 (git)
Affected: 5.10.124 , < 5.10.240 (semver)
Affected: 5.15.49 , < 5.15.187 (semver)
Affected: 5.18.6 , < 5.19 (semver)
guessed Create a notification for this product.
Linux Linux Affected: 5.19
Unaffected: 0 , < 5.19 (semver)
Unaffected: 5.10.240 , ≤ 5.10.* (semver)
Unaffected: 5.15.187 , ≤ 5.15.* (semver)
Unaffected: 6.1.144 , ≤ 6.1.* (semver)
Unaffected: 6.6.97 , ≤ 6.6.* (semver)
Unaffected: 6.12.37 , ≤ 6.12.* (semver)
Unaffected: 6.15.6 , ≤ 6.15.* (semver)
Unaffected: 6.16 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.5 , < * (custom)
guessed Create a notification for this product.
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP Affected: V3.1.5 , < * (custom)
guessed Create a notification for this product.
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.5 , < * (custom)
guessed Create a notification for this product.
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Se soluciona aplicando la barrera recomendada.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"fs/nfs/pnfs.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"8acc3e228e1c90bd410f73597a4549e0409f22d6\",\"lessThan\":\"08287df60bac5b008b6bcdb03053988335d3d282\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"ec23a86e060cbe30b62eb2955adc97c92d80cc4c\",\"lessThan\":\"8846fd02c98da8b79e6343a20e6071be6f372180\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"880265c77ac415090090d1fe72a188fee71cb458\",\"lessThan\":\"e4b13885e7ef1e64e45268feef1e5f0707c47e72\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"880265c77ac415090090d1fe72a188fee71cb458\",\"lessThan\":\"8ca65fa71024a1767a59ffbc6a6e2278af84735e\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"880265c77ac415090090d1fe72a188fee71cb458\",\"lessThan\":\"864a54c1243ed3ca60baa4bc492dede1361f4c83\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"880265c77ac415090090d1fe72a188fee71cb458\",\"lessThan\":\"1f4da20080718f258e189a2c5f515385fa393da6\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"880265c77ac415090090d1fe72a188fee71cb458\",\"lessThan\":\"c01776287414ca43412d1319d2877cbad65444ac\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f133819e24e78f3aaaa00e9fa2b816d5f73fd172\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"5.10.124\",\"lessThan\":\"5.10.240\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"5.15.49\",\"lessThan\":\"5.15.187\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"5.18.6\",\"lessThan\":\"5.19\",\"versionType\":\"semver\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"fs/nfs/pnfs.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.19\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.19\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.240\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.187\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.144\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.97\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.37\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.15.6\",\"lessThanOrEqual\":\"6.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.16\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]},{\"source\":\"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e\",\"affectedData\":[{\"vendor\":\"Siemens\",\"product\":\"SIMATIC 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Party Advisory\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://cert-portal.siemens.com/productcert/html/ssa-082556.html\",\"source\":\"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-07-30T09:12:29+00:00",
      "cve": "CVE-2025-38393",
      "id": "CVE-2025-38393",
      "initial_release_date": "2025-07-25T00:00:00+00:00",
      "product_status:fixed": "441",
      "product_status:known_affected": "128",
      "product_status:known_not_affected": "28",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: NFSv4/pNFS: Fix a race to wake on NFS_LAYOUT_DRAIN",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-38393.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-05T23:37:25Z",
      "cve": "CVE-2025-38393",
      "id": "CVE-2025-38393",
      "initial_release_date": "2025-07-28T23:23:51Z",
      "product_status:first_fixed": "2",
      "product_status:known_affected": "537",
      "product_status:known_not_affected": "299",
      "product_status:recommended": "519",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2025-38393",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2025-38393.json",
      "version": "45"
    }
  }
}



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Tags
Taxonomy of the tags.





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.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.