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Change History

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

net/mlx5e: Use a memory barrier to enforce PTP WQ xmit submission tracking occurs after populating the metadata_map

Just simply reordering the functions mlx5e_ptp_metadata_map_put and
mlx5e_ptpsq_track_metadata in the mlx5e_txwqe_complete context is not good
enough since both the compiler and CPU are free to reorder these two
functions. If reordering does occur, the issue that was supposedly fixed by
7e3f3ba97e6c ("net/mlx5e: 

kernel.org https://git.kernel.org/stable/c/936ef086161ab89a7f38f7a0761d6a3063c3277e [No types assigned]

kernel.org https://git.kernel.org/stable/c/b7cf07586c40f926063d4d09f7de28ff82f62b2a [No types assigned]

kernel.org https://git.kernel.org/stable/c/d1f71615dbb305f14f3b756cce015d70d8667549 [No types assigned]