In the Linux kernel, the following vulnerability has been resolved:
scsi: mvsas: Fix use-after-free bugs in mvs_work_queue
During the detaching of Marvell's SAS/SATA controller, the original code
calls cancel_delayed_work() in mvs_free() to cancel the delayed work
item mwq->work_q. However, if mwq->work_q is already running, the
cancel_delayed_work() may fail to cancel it. This can lead to
use-after-free scenarios where mvs_free() frees the mvs_info while
mvs_work_queue() is still executing and attempts to access the
already-freed mvs_info.
A typical race condition is illustrated below:
CPU 0 (remove) | CPU 1 (delayed work callback)
mvs_pci_remove() |
mvs_free() | mvs_work_queue()
cancel_delayed_work() |
kfree(mvi) |
| mvi-> // UAF
Replace cancel_delayed_work() with cancel_delayed_work_sync() to ensure
that the delayed work item is properly canceled and any executing
delayed work item completes before the mvs_info is deallocated.
This bug was found by static analysis.
Metrics
Affected Vendors & Products
References
History
Wed, 29 Oct 2025 13:45:00 +0000
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Tue, 21 Oct 2025 00:30:00 +0000
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| Weaknesses | CWE-416 | |
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| Metrics |
threat_severity
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cvssV3_1
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Mon, 20 Oct 2025 13:30:00 +0000
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Linux
Linux linux Kernel |
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| Vendors & Products |
Linux
Linux linux Kernel |
Sun, 19 Oct 2025 15:00:00 +0000
Sat, 18 Oct 2025 08:15:00 +0000
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| Description | In the Linux kernel, the following vulnerability has been resolved: scsi: mvsas: Fix use-after-free bugs in mvs_work_queue During the detaching of Marvell's SAS/SATA controller, the original code calls cancel_delayed_work() in mvs_free() to cancel the delayed work item mwq->work_q. However, if mwq->work_q is already running, the cancel_delayed_work() may fail to cancel it. This can lead to use-after-free scenarios where mvs_free() frees the mvs_info while mvs_work_queue() is still executing and attempts to access the already-freed mvs_info. A typical race condition is illustrated below: CPU 0 (remove) | CPU 1 (delayed work callback) mvs_pci_remove() | mvs_free() | mvs_work_queue() cancel_delayed_work() | kfree(mvi) | | mvi-> // UAF Replace cancel_delayed_work() with cancel_delayed_work_sync() to ensure that the delayed work item is properly canceled and any executing delayed work item completes before the mvs_info is deallocated. This bug was found by static analysis. | |
| Title | scsi: mvsas: Fix use-after-free bugs in mvs_work_queue | |
| References |
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Status: PUBLISHED
Assigner: Linux
Published: 2025-10-18T08:03:21.935Z
Updated: 2025-10-29T13:19:19.990Z
Reserved: 2025-04-16T07:20:57.151Z
Link: CVE-2025-40001
No data.
Status : Awaiting Analysis
Published: 2025-10-18T08:15:34.130
Modified: 2025-10-29T14:15:52.370
Link: CVE-2025-40001