CVE-2022-50865

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

tcp: fix a signed-integer-overflow bug in tcp_add_backlog()

The type of sk_rcvbuf and sk_sndbuf in struct sock is int, and

in tcp_add_backlog(), the variable limit is caculated by adding

sk_rcvbuf, sk_sndbuf and 64 * 1024, it may exceed the max value

of int and overflow. This patch reduces the limit budget by

halving the sndbuf to solve this issue since ACK packets are much

smaller than the payload.