Описание
In the Linux kernel, the following vulnerability has been resolved:
iio: buffer: Make IIO DMA fence release RCU-safe
The dma_fence documentation states that if a custom release
implementation is provided, the dma_fence object must be freed in an
RCU-safe way. The current iio_dma_fence implementation uses kfree(),
which might result in a use-after-free.
Remove the custom release implementation. This makes the DMA fence core
fall back to dma_fence_free(), which calls kfree_rcu() on the fence.
This requires that the fence be the first member of struct iio_dma_fence.
Using the default release method for extended DMA fence structures is a common pattern.
EPSS
7.8 High
CVSS3
Дефекты
Связанные уязвимости
(In the Linux kernel, the following vulnerability has been resolved: i ...)
In the Linux kernel, the following vulnerability has been resolved: i ...
In the Linux kernel, the following vulnerability has been resolved: iio: buffer: Make IIO DMA fence release RCU-safe The `dma_fence` documentation states that if a custom release implementation is provided, the `dma_fence` object must be freed in an RCU-safe way. The current `iio_dma_fence` implementation uses `kfree()`, which might result in a use-after-free. Remove the custom `release` implementation. This makes the DMA fence core fall back to `dma_fence_free()`, which calls `kfree_rcu()` on the fence. This requires that the fence be the first member of `struct iio_dma_fence`. Using the default release method for extended DMA fence structures is a common pattern.
EPSS
7.8 High
CVSS3