Linux Kernel
CVE-2025-40107
Lifecycle Timeline
3DescriptionCVE.org
In the Linux kernel, the following vulnerability has been resolved:
can: hi311x: fix null pointer dereference when resuming from sleep before interface was enabled
This issue is similar to the vulnerability in the mcp251x driver, which was fixed in commit 03c427147b2d ("can: mcp251x: fix resume from sleep before interface was brought up").
In the hi311x driver, when the device resumes from sleep, the driver schedules priv->restart_work. However, if the network interface was not previously enabled, the priv->wq (workqueue) is not allocated and initialized, leading to a null pointer dereference.
To fix this, we move the allocation and initialization of the workqueue from the hi3110_open function to the hi3110_can_probe function. This ensures that the workqueue is properly initialized before it is used during device resume. And added logic to destroy the workqueue in the error handling paths of hi3110_can_probe and in the hi3110_can_remove function to prevent resource leaks.
AnalysisAI
In the Linux kernel, the following vulnerability has been resolved: can: hi311x: fix null pointer dereference when resuming from sleep before interface was enabled This issue is similar to the.
Technical ContextAI
In the Linux kernel, the following vulnerability has been resolved: can: hi311x: fix null pointer dereference when resuming from sleep before interface was enabled This issue is similar to the vulnerability in the mcp251x driver, which was fixed in commit 03c427147b2d ("can: mcp251x: fix resume from sleep before interface was brought up"). In the hi311x driver, when the device resumes from sleep, the driver schedules priv->restart_work. However, if the network interface was not previously enabled, the priv->wq (workqueue) is not allocated and initialized, leading to a null pointer dereference. To fix this, we move the allocation and initialization of the workqueue from the hi3110_open function to the hi3110_can_probe function. This ensures that the workqueue is properly initialized before it is used during device resume. And added logic to destroy the workqueue in the error handling paths of hi3110_can_probe and in the hi3110_can_remove function to prevent resource leaks.
Affected ProductsAI
See vendor advisory for affected versions.
RemediationAI
A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.
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External POC / Exploit Code
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