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Change History

In the Linux kernel, the following vulnerability has been resolved:

net/mlx5: Add a timeout to acquire the command queue semaphore

Prevent forced completion handling on an entry that has not yet been
assigned an index, causing an out of bounds access on idx = -22.
Instead of waiting indefinitely for the sem, blocking flow now waits for
index to be allocated or a sem acquisition timeout before beginning the
timer for FW completion.

Kernel log example:
mlx5_core 0000:06:00.0: wait_func_handle_e

kernel.org https://git.kernel.org/stable/c/2d0962d05c93de391ce85f6e764df895f47c8918 [No types assigned]

kernel.org https://git.kernel.org/stable/c/485d65e1357123a697c591a5aeb773994b247ad7 [No types assigned]

kernel.org https://git.kernel.org/stable/c/4baae687a20ef2b82fde12de3c04461e6f2521d6 [No types assigned]

kernel.org https://git.kernel.org/stable/c/94024332a129c6e4275569d85c0c1bfb2ae2d71b [No types assigned]

kernel.org https://git.kernel.org/stable/c/f9caccdd42e999b74303c9b0643300073ed5d319 [No types assigned]