CVE-2024-45001

A flaw was found in the MANA driver in the Linux Kernel, where the RX buffer alloc_size is passed into napi_build_skb() to create SKB. skb_shinfo(skb) is located at the end of skb, and its alignment is affected by the alloc_size passed into napi_build_skb(). The size needs to be aligned properly for better performance and atomic operations, otherwise, on ARM64 CPU for certain MTU settings such as 4000, atomic operations may panic on the skb_shinfo(skb)->dataref due to alignment fault. To mitigate, add proper alignment to the alloc_size calculation.

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