CVE-2025-39841 (GCVE-0-2025-39841)

Vulnerability from cvelistv5 – Published: 2025-09-19 15:26 – Updated: 2026-05-12 12:07
VLAI
Title
scsi: lpfc: Fix buffer free/clear order in deferred receive path
Summary
In the Linux kernel, the following vulnerability has been resolved: scsi: lpfc: Fix buffer free/clear order in deferred receive path Fix a use-after-free window by correcting the buffer release sequence in the deferred receive path. The code freed the RQ buffer first and only then cleared the context pointer under the lock. Concurrent paths (e.g., ABTS and the repost path) also inspect and release the same pointer under the lock, so the old order could lead to double-free/UAF. Note that the repost path already uses the correct pattern: detach the pointer under the lock, then free it after dropping the lock. The deferred path should do the same.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 472e146d1cf3410a898b49834500fa9e33ac41a2 , < ab34084f42ee06a9028d67c78feafb911d33d111 (git)
Affected: 472e146d1cf3410a898b49834500fa9e33ac41a2 , < baa39f6ad79d372a6ce0aa639fbb2f1578479f57 (git)
Affected: 472e146d1cf3410a898b49834500fa9e33ac41a2 , < 95b63d15fce5c54a73bbf195e1aacb5a75b128e2 (git)
Affected: 472e146d1cf3410a898b49834500fa9e33ac41a2 , < 55658c7501467ca9ef3bd4453dd920010db8bc13 (git)
Affected: 472e146d1cf3410a898b49834500fa9e33ac41a2 , < d96cc9a1b57725930c60b607423759d563b4d900 (git)
Affected: 472e146d1cf3410a898b49834500fa9e33ac41a2 , < 367cb5ffd8a8a4c85dc89f55e7fa7cc191425b11 (git)
Affected: 472e146d1cf3410a898b49834500fa9e33ac41a2 , < 897f64b01c1249ac730329b83f4f40bab71e86c7 (git)
Affected: 472e146d1cf3410a898b49834500fa9e33ac41a2 , < 9dba9a45c348e8460da97c450cddf70b2056deb3 (git)
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Linux Linux Affected: 5.1
Unaffected: 0 , < 5.1 (semver)
Unaffected: 5.4.299 , ≤ 5.4.* (semver)
Unaffected: 5.10.243 , ≤ 5.10.* (semver)
Unaffected: 5.15.192 , ≤ 5.15.* (semver)
Unaffected: 6.1.151 , ≤ 6.1.* (semver)
Unaffected: 6.6.105 , ≤ 6.6.* (semver)
Unaffected: 6.12.46 , ≤ 6.12.* (semver)
Unaffected: 6.16.6 , ≤ 6.16.* (semver)
Unaffected: 6.17 , ≤ * (original_commit_for_fix)
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Siemens RUGGEDCOM RST2428P Affected: 0 , < V3.3 (custom)
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Siemens SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family Affected: 0 , < V3.3 (custom)
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Siemens SCALANCE XCH328 Affected: 0 , < V3.3 (custom)
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Siemens SCALANCE XCM324 Affected: 0 , < V3.3 (custom)
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Siemens SCALANCE XCM328 Affected: 0 , < V3.3 (custom)
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Siemens SCALANCE XCM332 Affected: 0 , < V3.3 (custom)
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Siemens SCALANCE XRH334 (24 V DC, 8xFO, CC) Affected: 0 , < V3.3 (custom)
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Siemens SCALANCE XRM334 (230 V AC, 12xFO) Affected: 0 , < V3.3 (custom)
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Siemens SCALANCE XRM334 (230 V AC, 8xFO) Affected: 0 , < V3.3 (custom)
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Siemens SCALANCE XRM334 (230V AC, 2x10G, 24xSFP, 8xSFP+) Affected: 0 , < V3.3 (custom)
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Siemens SCALANCE XRM334 (24 V DC, 12xFO) Affected: 0 , < V3.3 (custom)
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Siemens SCALANCE XRM334 (24 V DC, 8xFO) Affected: 0 , < V3.3 (custom)
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Siemens SCALANCE XRM334 (24V DC, 2x10G, 24xSFP, 8xSFP+) Affected: 0 , < V3.3 (custom)
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Siemens SCALANCE XRM334 (2x230 V AC, 12xFO) Affected: 0 , < V3.3 (custom)
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Siemens SCALANCE XRM334 (2x230 V AC, 8xFO) Affected: 0 , < V3.3 (custom)
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Siemens SCALANCE XRM334 (2x230V AC, 2x10G, 24xSFP, 8xSFP+) Affected: 0 , < V3.3 (custom)
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Siemens SIMATIC CN 4100 Affected: 0 , < V5.0 (custom)
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The\\ndeferred path should do the same.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-787\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.1\",\"versionEndExcluding\":\"5.4.299\",\"matchCriteriaId\":\"B2628624-A7FD-440D-B999-D756AED08034\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.243\",\"matchCriteriaId\":\"6DE4B49A-F1A3-4F0C-96D3-68676CE6BB4C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.192\",\"matchCriteriaId\":\"8A911BD7-361F-45C0-A4A6-33FCBA0F6117\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.151\",\"matchCriteriaId\":\"BC2D0B88-F133-4143-B91D-0A439AA143C0\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.105\",\"matchCriteriaId\":\"B9364B0C-6B18-422E-8254-73EF0E856875\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.12.46\",\"matchCriteriaId\":\"F7E2B332-E920-4CAC-B400-288602DB6F16\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.13\",\"versionEndExcluding\":\"6.16.6\",\"matchCriteriaId\":\"548F104C-0F08-438B-9C97-64C903F0C678\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"327D22EF-390B-454C-BD31-2ED23C998A1C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.17:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"C730CD9A-D969-4A8E-9522-162AAF7C0EE9\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.17:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"39982C4B-716E-4B2F-8196-FA301F47807D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.17:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"340BEEA9-D70D-4290-B502-FBB1032353B1\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"FA6FEEC2-9F11-4643-8827-749718254FED\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/367cb5ffd8a8a4c85dc89f55e7fa7cc191425b11\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/55658c7501467ca9ef3bd4453dd920010db8bc13\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/897f64b01c1249ac730329b83f4f40bab71e86c7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/95b63d15fce5c54a73bbf195e1aacb5a75b128e2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/9dba9a45c348e8460da97c450cddf70b2056deb3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/ab34084f42ee06a9028d67c78feafb911d33d111\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/baa39f6ad79d372a6ce0aa639fbb2f1578479f57\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/d96cc9a1b57725930c60b607423759d563b4d900\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"https://cert-portal.siemens.com/productcert/html/ssa-032379.html\",\"source\":\"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e\"},{\"url\":\"https://cert-portal.siemens.com/productcert/html/ssa-089022.html\",\"source\":\"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e\"}]}}"
  }
}


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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.