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

netfilter: nf conntrack: use get unaligned be32() in tcp sack()

The timestamp-only fast path dereferences the option stream as *( be32 *)ptr, which assumes 4-byte alignment that the TCP option stream does not guarantee. Use get unaligned be32() instead, which reads the value safely and already returns host byte order, so the htonl() on the comparison constant can be dropped.

This matches the existing get unaligned be32() use later in the same function.