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.
Metrics
Affected Vendors & Products
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History
Mon, 22 Sep 2025 10:15:00 +0000
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Linux
Linux linux Kernel |
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Vendors & Products |
Linux
Linux linux Kernel |
Sat, 20 Sep 2025 00:15:00 +0000
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threat_severity
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cvssV3_1
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Fri, 19 Sep 2025 15:30:00 +0000
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Description | 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. | |
Title | scsi: lpfc: Fix buffer free/clear order in deferred receive path | |
References |
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Status: PUBLISHED
Assigner: Linux
Published:
Updated: 2025-09-29T06:00:48.116Z
Reserved: 2025-04-16T07:20:57.141Z
Link: CVE-2025-39841

No data.

Status : Awaiting Analysis
Published: 2025-09-19T16:15:42.813
Modified: 2025-09-22T21:23:01.543
Link: CVE-2025-39841


Updated: 2025-09-22T10:06:18Z