scsi: lpfc: Fix buffer free/clear order in deferred receive path

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2025-39841
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-09-19 16:15:42 UTC
Updated2026-05-12 13:17:14 UTC
DescriptionIn 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.

Risk And Classification

Primary CVSS: v3.1 7.8 HIGH from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Problem Types: CWE-787

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 472e146d1cf3410a898b49834500fa9e33ac41a2 ab34084f42ee06a9028d67c78feafb911d33d111 git Not specified
CNA Linux Linux affected 472e146d1cf3410a898b49834500fa9e33ac41a2 baa39f6ad79d372a6ce0aa639fbb2f1578479f57 git Not specified
CNA Linux Linux affected 472e146d1cf3410a898b49834500fa9e33ac41a2 95b63d15fce5c54a73bbf195e1aacb5a75b128e2 git Not specified
CNA Linux Linux affected 472e146d1cf3410a898b49834500fa9e33ac41a2 55658c7501467ca9ef3bd4453dd920010db8bc13 git Not specified
CNA Linux Linux affected 472e146d1cf3410a898b49834500fa9e33ac41a2 d96cc9a1b57725930c60b607423759d563b4d900 git Not specified
CNA Linux Linux affected 472e146d1cf3410a898b49834500fa9e33ac41a2 367cb5ffd8a8a4c85dc89f55e7fa7cc191425b11 git Not specified
CNA Linux Linux affected 472e146d1cf3410a898b49834500fa9e33ac41a2 897f64b01c1249ac730329b83f4f40bab71e86c7 git Not specified
CNA Linux Linux affected 472e146d1cf3410a898b49834500fa9e33ac41a2 9dba9a45c348e8460da97c450cddf70b2056deb3 git Not specified
CNA Linux Linux affected 5.1 Not specified
CNA Linux Linux unaffected 5.1 semver Not specified
CNA Linux Linux unaffected 5.4.299 5.4.* semver Not specified
CNA Linux Linux unaffected 5.10.243 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.192 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.151 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.105 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.46 6.12.* semver Not specified
CNA Linux Linux unaffected 6.16.6 6.16.* semver Not specified
CNA Linux Linux unaffected 6.17 * original_commit_for_fix Not specified
ADP Siemens RUGGEDCOM RST2428P affected V3.3 custom Not specified
ADP Siemens SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 Family affected V3.3 custom Not specified
ADP Siemens SCALANCE XCH328 affected V3.3 custom Not specified
ADP Siemens SCALANCE XCM324 affected V3.3 custom Not specified
ADP Siemens SCALANCE XCM328 affected V3.3 custom Not specified
ADP Siemens SCALANCE XCM332 affected V3.3 custom Not specified
ADP Siemens SCALANCE XRH334 24 V DC 8xFO CC affected V3.3 custom Not specified
ADP Siemens SCALANCE XRM334 230 V AC 12xFO affected V3.3 custom Not specified
ADP Siemens SCALANCE XRM334 230 V AC 8xFO affected V3.3 custom Not specified
ADP Siemens SCALANCE XRM334 230V AC 2x10G 24xSFP 8xSFP affected V3.3 custom Not specified
ADP Siemens SCALANCE XRM334 24 V DC 12xFO affected V3.3 custom Not specified
ADP Siemens SCALANCE XRM334 24 V DC 8xFO affected V3.3 custom Not specified
ADP Siemens SCALANCE XRM334 24V DC 2x10G 24xSFP 8xSFP affected V3.3 custom Not specified
ADP Siemens SCALANCE XRM334 2x230 V AC 12xFO affected V3.3 custom Not specified
ADP Siemens SCALANCE XRM334 2x230 V AC 8xFO affected V3.3 custom Not specified
ADP Siemens SCALANCE XRM334 2x230V AC 2x10G 24xSFP 8xSFP affected V3.3 custom Not specified
ADP Siemens SIMATIC CN 4100 affected V5.0 custom Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/ab34084f42ee06a9028d67c78feafb911d33d111 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/55658c7501467ca9ef3bd4453dd920010db8bc13 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
lists.debian.org/debian-lts-announce/2025/10/msg00008.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Mailing List, Third Party Advisory
git.kernel.org/stable/c/897f64b01c1249ac730329b83f4f40bab71e86c7 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
cert-portal.siemens.com/productcert/html/ssa-089022.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
git.kernel.org/stable/c/baa39f6ad79d372a6ce0aa639fbb2f1578479f57 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/9dba9a45c348e8460da97c450cddf70b2056deb3 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/367cb5ffd8a8a4c85dc89f55e7fa7cc191425b11 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
cert-portal.siemens.com/productcert/html/ssa-032379.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
git.kernel.org/stable/c/d96cc9a1b57725930c60b607423759d563b4d900 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/95b63d15fce5c54a73bbf195e1aacb5a75b128e2 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
lists.debian.org/debian-lts-announce/2025/10/msg00007.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Mailing List, Third Party Advisory
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