CVE-2025-40107 - can: hi311x: fix null pointer dereference when resuming from sleep before interface was enabled

CVE-2025-40107 - can: hi311x: fix null pointer dereference when resuming from sleep before interface was enabled

https://cvefeed.io/rssfeed/latest.atom / Mon, 11/03/2025 - 16:46
CVE ID : CVE-2025-40107
Published : Nov. 3, 2025, 1:15 p.m. | 2 hours, 31 minutes ago
Description : 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.
Severity: 0.0 | NA
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