CVE-2025-40107
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 versions
Linux kernel versions
4.12
and later are affected. Fixed in
6.1.156,
6.6.111,
6.12.52,
6.16.12,
6.17
and their respective stable series.
References
The following references provide additional information about CVE-2025-40107 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
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PatchKernel patch commithttps://git.kernel.org/stable/c/1d2ef21f02baff0c109ad78b9e835fb4acb14533
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PatchKernel patch commithttps://git.kernel.org/stable/c/6b696808472197b77b888f50bc789a3bae077743
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PatchKernel patch commithttps://git.kernel.org/stable/c/d1fc4c041459e2d4856c1b2501486ba4f0cbf96b
Frequently asked questions
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What is CVE-2025-40107?
CVE-2025-40107 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 4.12 onward and has been patched in 6.1.156, 6.6.111, 6.12.52 and others. CVE-2025-40107 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2025-40107?
Yes — CVE-2025-40107 has been patched. Fixed versions include 6.1.156, 6.6.111, 6.12.52 and others. If you are running Linux kernel 4.12 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2025-40107 actively exploited?
No — CVE-2025-40107 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.