CVE-2025-40107
can: hi311x: fix null pointer dereference when resuming from sleep before interface was enabled
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.
Produtos afetados
Linux · LinuxQuer saber se a sua infraestrutura está exposta a isto?
Falar com a TrueHacking →Referências
https://git.kernel.org/stable/c/1d2ef21f02baff0c109ad78b9e835fb4acb14533https://git.kernel.org/stable/c/6b696808472197b77b888f50bc789a3bae077743https://git.kernel.org/stable/c/d1fc4c041459e2d4856c1b2501486ba4f0cbf96bhttps://git.kernel.org/stable/c/e93af787187e585933570563c643337fa731584ahttps://git.kernel.org/stable/c/fd00cf38fd437c979f0e5905e3ebdfc3f55a4b96