connman: fix CVE-2022-23096-7

An issue was discovered in the DNS proxy in Connman through 1.40.
The TCP server reply implementation lacks a check for the presence
of sufficient Header Data, leading to an out-of-bounds read (CVE-2022-23096)

An issue was discovered in the DNS proxy in Connman through 1.40.
forward_dns_reply mishandles a strnlen call, leading to an out-of-bounds
read (CVE-2022-23097)

Backport patch from:
https://git.kernel.org/pub/scm/network/connman/connman.git/commit/?id=e5a313736e13c90d19085e953a26256a198e4950

CVE: CVE-2022-23096 CVE-2022-23097

Signed-off-by: Steve Sakoman