Description
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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
3e26d9f08fbe0b73e951a5e810fdb7a332b7e37f to < 311595dc0b5621f74d8eb4dc38ef4efcdfe7e769affected3e26d9f08fbe0b73e951a5e810fdb7a332b7e37f to < 06a9460b8b792e109cbc934a856d02e5cff217efaffected3e26d9f08fbe0b73e951a5e810fdb7a332b7e37f to < 11cef99491117d4264603df159c4ff5f3845a059affected3e26d9f08fbe0b73e951a5e810fdb7a332b7e37f to < 8662e56c31cf23b61ca3d11b516efb94c35b8026affected
Linux Linux
Default version status: affected
6.11affected0 to < 6.11unaffected6.12.110 to ≤ 6.12.*unaffected6.18.51 to ≤ 6.18.*unaffected7.2.5 to ≤ 7.2.*unaffected7.3 to ≤ *unaffected