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CVE-2025-40001— scsi: mvsas: Fix use-after-free bugs in mvs_work_queue

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于mvs_work_queue中未正确取消延迟工作项，可能导致释放后重用。

AI Predicted 7.8 Difficulty: Hard EPSS 0.26% · P17

Possible ATT&CK Techniques 1 AI

T1211 · Exploitation for Stealth

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 20b09c2992fefbe78f8cede7b404fb143a413c52< a6f68f219d4d4b92d7c781708d4afc4cc42961ec affected
20b09c2992fefbe78f8cede7b404fb143a413c52< aacd1777d4a795c387a20b9ca776e2c1225d05d7 affected
20b09c2992fefbe78f8cede7b404fb143a413c52< 6ba7e73cafd155a5d3abf560d315f0bab2b9d89f affected
20b09c2992fefbe78f8cede7b404fb143a413c52< c2c35cb2a31844f84f21ab364b38b4309d756d42 affected
20b09c2992fefbe78f8cede7b404fb143a413c52< 3c90f583d679c81a5a607a6ae0051251b6dee35b affected
20b09c2992fefbe78f8cede7b404fb143a413c52< 00d3af40b158ebf7c7db2b3bbb1598a54bf28127 affected
20b09c2992fefbe78f8cede7b404fb143a413c52< feb946d2fc9dc754bf3d594d42cd228860ff8647 affected
20b09c2992fefbe78f8cede7b404fb143a413c52< 60cd16a3b7439ccb699d0bf533799eeb894fd217 affected
… +10 more rows
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I. Basic Information for CVE-2025-40001

Vulnerability Information
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Vulnerability Title
scsi: mvsas: Fix use-after-free bugs in mvs_work_queue
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于mvs_work_queue中未正确取消延迟工作项，可能导致释放后重用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 20b09c2992fefbe78f8cede7b404fb143a413c52 ~ a6f68f219d4d4b92d7c781708d4afc4cc42961ec -
Linux Linux 2.6.31 -

II. Public POCs for CVE-2025-40001

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III. Intelligence Information for CVE-2025-40001

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Patches & Fixes for CVE-2025-40001 (4)

Same Patch Batch · Linux · 2025-10-18 · 3 CVEs total

CVE-2025-40003 net: mscc: ocelot: Fix use-after-free caused by cyclic delayed work
CVE-2025-40002 thunderbolt: Fix use-after-free in tb_dp_dprx_work

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-40001

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