can: hi311x: fix null pointer dereference when resuming from sleep before interface was enabled
Key facts
- Attack vector
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- Privileges required
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- User interaction
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- Attack complexity
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- Impact type
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- Confidentiality · integrity · availability
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- Fix status
- Fixed
No CVSS vector from any source. Fix status from CNA.
Summary
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.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
Remediation
- Fix · CNA Linux (Linux) Fixed in 6.1.156, 6.6.111, 6.12.52, 6.16.12, 6.17
Vendor assessments
Red Hat
Not affected: 5 products
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2025-40107
- 2026-10-03 Alias added: GHSA-394x-fq64-jqf6
References
Other 5
- https://git.kernel.org/stable/c/d1fc4c041459e2d4856c1b2501486ba4f0cbf96b
- https://git.kernel.org/stable/c/e93af787187e585933570563c643337fa731584a
- https://git.kernel.org/stable/c/1d2ef21f02baff0c109ad78b9e835fb4acb14533
- https://git.kernel.org/stable/c/fd00cf38fd437c979f0e5905e3ebdfc3f55a4b96
- https://git.kernel.org/stable/c/6b696808472197b77b888f50bc789a3bae077743
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Sources
- CVE-2025-40107 · CVE Program
- CVE-2025-40107 · NVD
- FIRST EPSS
- GHSA-394x-fq64-jqf6 · GitHub Advisory Database · CC BY 4.0
- CVE-2025-40107 · Red Hat security data · CC BY 4.0
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