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

Q: What is the severity of CVE-2025-40001?

CVE-2025-40001 is classified as a medium severity vulnerability due to the potential for use-after-free exploits.

Q: How do I fix CVE-2025-40001?

To fix CVE-2025-40001, update your Linux kernel to the latest patched version that addresses this vulnerability.

Q: What systems are affected by CVE-2025-40001?

CVE-2025-40001 affects the Linux kernel when using Marvell's SAS/SATA controller.

Q: What type of vulnerability is CVE-2025-40001?

CVE-2025-40001 is a use-after-free vulnerability found in the SCSI subsystem of the Linux kernel.

Q: Is CVE-2025-40001 actively exploited?

As of now, there are no confirmed reports of active exploitation of CVE-2025-40001.

Published Oct 18, 2025

Updated

In the Linux kernel, the following vulnerability has been resolved:

scsi: mvsas: Fix use-after-free bugs in mvsworkqueue

During the detaching of Marvell's SAS/SATA controller, the original code calls canceldelayedwork() in mvsfree() to cancel the delayed work item mwq->workq. However, if mwq->workq is already running, the canceldelayedwork() may fail to cancel it. This can lead to use-after-free scenarios where mvsfree() frees the mvsinfo while mvsworkqueue() is still executing and attempts to access the already-freed mvsinfo.

A typical race condition is illustrated below:

Replace canceldelayedwork() with canceldelayedworksync() to ensure that the delayed work item is properly canceled and any executing delayed work item completes before the mvsinfo is deallocated.

This bug was found by static analysis.

Affected Software

243 affected componentsFixes available

Linux Linux kernel

Microsoft azl3 kernel 6.6.96.2-2

Microsoft azl3 kernel 6.6.104.2-4

Microsoft azl3 kernel 6.6.112.1-2

Patch available

ubuntu/linux*

ubuntu/linux-aws*

ubuntu/linux-azure*

ubuntu/linux-lts-xenial*

ubuntu/linux*

ubuntu/linux-aws*

ubuntu/linux-aws-hwe*

ubuntu/linux-azure*

ubuntu/linux-gcp*

ubuntu/linux-hwe*

ubuntu/linux-hwe-edge*

ubuntu/linux-kvm*

ubuntu/linux-oracle*

ubuntu/linux-fips*

ubuntu/linux*

ubuntu/linux-aws*

ubuntu/linux-aws-5.0*

ubuntu/linux-aws-5.3*

ubuntu/linux-aws-5.4*

ubuntu/linux-azure*

ubuntu/linux-azure-4.15*

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ubuntu/linux-oem*

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ubuntu/linux-oracle-5.0*

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ubuntu/linux-raspi-5.4*

ubuntu/linux-aws-fips*

ubuntu/linux-azure-fips*

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ubuntu/linux-gcp-fips*

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ubuntu/linux-azure-fips*

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ubuntu/linux-ibm-5.15<5.15.0-1094.97~20.04.1

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ubuntu/linux-intel-iotg-5.15<5.15.0-1095.101~20.04.1

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ubuntu/linux-iot*

ubuntu/linux-kvm*

ubuntu/linux-lowlatency-hwe-5.15<5.15.0-170.180~20.04.1

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ubuntu/linux-nvidia-tegra-5.15<5.15.0-1052.52~20.04.2

5.15.0-1052.52~20.04.2

ubuntu/linux-oem-5.10*

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ubuntu/linux-oem-5.6*

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ubuntu/linux-azure<5.15.0-1109.118

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ubuntu/linux-azure-5.19*

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ubuntu/linux-azure-fde<5.15.0-1109.118.1

5.15.0-1109.118.1

ubuntu/linux-azure-fde-5.19*

ubuntu/linux-azure-fde-6.2*

ubuntu/linux-azure-fde-6.8<6.8.0-1058.65~22.04.1

6.8.0-1058.65~22.04.1

ubuntu/linux-gcp<5.15.0-1100.109

5.15.0-1100.109

ubuntu/linux-gcp-5.19*

ubuntu/linux-gcp-6.2*

ubuntu/linux-gcp-6.5*

ubuntu/linux-gcp-6.8<6.8.0-1052.55~22.04.1

6.8.0-1052.55~22.04.1

ubuntu/linux-gke<5.15.0-1096.102

5.15.0-1096.102

ubuntu/linux-gkeop<5.15.0-1083.91

5.15.0-1083.91

ubuntu/linux-hwe-5.19*

ubuntu/linux-hwe-6.2*

ubuntu/linux-hwe-6.5*

ubuntu/linux-hwe-6.8<6.8.0-106.106~22.04.1

6.8.0-106.106~22.04.1

ubuntu/linux-ibm<5.15.0-1094.97

5.15.0-1094.97

ubuntu/linux-ibm-6.8<6.8.0-1049.49~22.04.1

6.8.0-1049.49~22.04.1

ubuntu/linux-intel-iot-realtime*

ubuntu/linux-intel-iotg<5.15.0-1095.101

5.15.0-1095.101

ubuntu/linux-kvm<5.15.0-1092.97

5.15.0-1092.97

ubuntu/linux-lowlatency<5.15.0-170.180

5.15.0-170.180

ubuntu/linux-lowlatency-hwe-5.19*

ubuntu/linux-lowlatency-hwe-6.2*

ubuntu/linux-lowlatency-hwe-6.5*

ubuntu/linux-lowlatency-hwe-6.8<6.8.0-106.106.1~22.04.1

6.8.0-106.106.1~22.04.1

ubuntu/linux-nvidia<5.15.0-1095.96

5.15.0-1095.96

ubuntu/linux-nvidia-6.2*

ubuntu/linux-nvidia-6.5*

ubuntu/linux-nvidia-6.8<6.8.0-1049.52~22.04.1

6.8.0-1049.52~22.04.1

ubuntu/linux-nvidia-tegra<5.15.0-1052.52

5.15.0-1052.52

ubuntu/linux-nvidia-tegra-igx<5.15.0-1041.41

5.15.0-1041.41

ubuntu/linux-oem-5.17*

ubuntu/linux-oem-6.0*

ubuntu/linux-oem-6.1*

ubuntu/linux-oem-6.5*

ubuntu/linux-oracle<5.15.0-1097.103

5.15.0-1097.103

ubuntu/linux-oracle-6.5*

ubuntu/linux-oracle-6.8<6.8.0-1047.48~22.04.1

6.8.0-1047.48~22.04.1

ubuntu/linux-raspi<5.15.0-1097.100

5.15.0-1097.100

ubuntu/linux-realtime*

ubuntu/linux-riscv*

ubuntu/linux-riscv-5.19*

ubuntu/linux-riscv-6.5*

ubuntu/linux-riscv-6.8<6.8.0-106.106~22.04.1

6.8.0-106.106~22.04.1

ubuntu/linux-starfive-5.19*

ubuntu/linux-starfive-6.2*

ubuntu/linux-starfive-6.5*

ubuntu/linux-xilinx-zynqmp<5.15.0-1064.68

5.15.0-1064.68

ubuntu/linux-bluefield<5.15.0-1084.86

5.15.0-1084.86

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6.8.1-1045.46~22.04.1

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ubuntu/linux-azure-fips*

ubuntu/linux-fips*

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ubuntu/linux-aws-fips<5.15.0-1100.107+fips1

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5.15.0-1109.118+fips1

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5.15.0-1100.109+fips1

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6.8.0-1050.53

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ubuntu/linux-aws-6.17<6.17.0-1007.7~24.04.1

6.17.0-1007.7~24.04.1

ubuntu/linux-azure<6.8.0-1051.57

6.8.0-1051.57

ubuntu/linux-azure-6.11*

ubuntu/linux-azure-6.14*

ubuntu/linux-azure-fde<6.8.0-1058.65

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ubuntu/linux-azure-fde-6.14*

ubuntu/linux-azure-nvidia*

ubuntu/linux-azure-nvidia-6.14*

ubuntu/linux-gcp<6.8.0-1052.55

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ubuntu/linux-gcp-6.11*

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ubuntu/linux-gkeop<6.8.0-1035.38

6.8.0-1035.38

ubuntu/linux-hwe-6.11*

ubuntu/linux-hwe-6.14*

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ubuntu/linux-lowlatency<6.8.0-106.106.1

6.8.0-106.106.1

ubuntu/linux-lowlatency-hwe-6.11*

ubuntu/linux-nvidia<6.8.0-1049.52

6.8.0-1049.52

ubuntu/linux-nvidia-6.11*

ubuntu/linux-nvidia-6.17<6.17.0-1008.8

6.17.0-1008.8

ubuntu/linux-nvidia-lowlatency<6.8.0-1049.52.1

6.8.0-1049.52.1

ubuntu/linux-nvidia-tegra<6.8.0-1020.20

6.8.0-1020.20

ubuntu/linux-oem-6.11*

ubuntu/linux-oem-6.14*

ubuntu/linux-oem-6.17<6.17.0-1011.11

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ubuntu/linux-oem-6.8*

ubuntu/linux-oracle<6.8.0-1047.48

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ubuntu/linux-raspi<6.8.0-1050.54

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ubuntu/linux-raspi-realtime*

ubuntu/linux-realtime*

ubuntu/linux-riscv*

ubuntu/linux-riscv-6.14*

ubuntu/linux-xilinx<6.8.0-1028.29

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ubuntu/linux-bluefield<6.8.0-1017.21

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ubuntu/linux-realtime<6.8.1-1045.46

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ubuntu/linux-realtime-6.14*

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6.17.0-1006.7~24.04.1

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6.8.0-1050.53+fips1

ubuntu/linux-azure-fips<6.8.0-1052.58+fips1

6.8.0-1052.58+fips1

ubuntu/linux-fips<6.8.0-106.106+fips1

6.8.0-106.106+fips1

ubuntu/linux-gcp-fips<6.8.0-1052.55+fips1

6.8.0-1052.55+fips1

ubuntu/linux<6.17.0-14.14

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ubuntu/linux-aws<6.17.0-1007.7

6.17.0-1007.7

ubuntu/linux-azure<6.17.0-1008.8

6.17.0-1008.8

ubuntu/linux-azure-fde*

ubuntu/linux-gcp<6.17.0-1007.7

6.17.0-1007.7

ubuntu/linux-oracle<6.17.0-1007.7

6.17.0-1007.7

ubuntu/linux-raspi<6.17.0-1008.8

6.17.0-1008.8

ubuntu/linux-realtime<6.17.0-1006.7

6.17.0-1006.7

ubuntu/linux-riscv<6.17.0-14.14.1

6.17.0-14.14.1

debian/linux

6.1.176-16.1.190-16.12.107-16.12.115-27.2.15-17.3.3-1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

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Fixed in 6.8.0-2040.41
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Fixed in 6.8.1-1045.46
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Fixed in 6.17.0-1006.7~24.04.1
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Upgrade ubuntu/linux-aws-fips to a version that resolves this vulnerability.
Fixed in 6.8.0-1050.53+fips1
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Fixed in 6.8.0-1052.58+fips1
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Fixed in 6.8.0-106.106+fips1
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Fixed in 6.8.0-1052.55+fips1
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Fixed in 6.17.0-14.14
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Fixed in 6.17.0-1007.7
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Fixed in 6.17.0-1008.8
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Fixed in 6.17.0-1007.7
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Fixed in 6.17.0-1007.7
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Fixed in 6.17.0-1008.8
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Fixed in 6.17.0-1006.7
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Fixed in 6.17.0-14.14.1
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Fixed in 6.1.176-1Fixed in 6.1.190-1Fixed in 6.12.107-1Fixed in 6.12.115-2Fixed in 7.2.15-1Fixed in 7.3.3-1
Configuration
Replace cancel_delayed_work() with cancel_delayed_work_sync() in mvs_free() so the delayed work item is canceled and any executing callback completes before mvi is deallocated.
Linux kernel scsi mvsas delayed work cancellation in mvs_free() = cancel_delayed_work_sync()

Event History

Oct 18, 2025

CVE Published

via MITRE·08:03 AM

Data Sourced

via MITRE·08:03 AM

Description

Data Sourced

via OSV·08:15 AM

DescriptionSeverityAffected Software

Data Sourced

via NVD·08:15 AM

Description

Oct 19, 2025

Data Sourced

via Microsoft·01:01 AM

DescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

DSA-6053

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

What is the severity of CVE-2025-40001?

CVE-2025-40001 is classified as a medium severity vulnerability due to the potential for use-after-free exploits.

How do I fix CVE-2025-40001?

To fix CVE-2025-40001, update your Linux kernel to the latest patched version that addresses this vulnerability.

What systems are affected by CVE-2025-40001?

CVE-2025-40001 affects the Linux kernel when using Marvell's SAS/SATA controller.

What type of vulnerability is CVE-2025-40001?

CVE-2025-40001 is a use-after-free vulnerability found in the SCSI subsystem of the Linux kernel.

Is CVE-2025-40001 actively exploited?

As of now, there are no confirmed reports of active exploitation of CVE-2025-40001.

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

Affected Software

Remediation

Event History

Parent advisories

Peer vulnerabilities

Frequently Asked Questions

What is the severity of CVE-2025-40001?

How do I fix CVE-2025-40001?

What systems are affected by CVE-2025-40001?

What type of vulnerability is CVE-2025-40001?

Is CVE-2025-40001 actively exploited?

Company

Resources

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