security/nmap-devel: Fix mksock_bind_addr EINVALHEADmain

Fix mksock_bind_addr EINVAL on FreeBSD in service/connect scans.

From https://github.com/nmap/nmap/pull/3439:

Summary

Fixes #3438 — mksock_bind_addr(): Bind to <IP>:0 failed ... Invalid argument (22)
on FreeBSD when running -sV (service version scan).
Root Cause

After commit eb79c42, nsock_iod_set_localaddr() is called for every service
probe whenever a source address can be determined via routing — not only when
the user explicitly requests source binding via -S or -e.

On FreeBSD, the subsequent bind() call fails with EINVAL because the stored
addrlen may equal sizeof(sockaddr_storage) (128 bytes) rather than the
protocol-specific size the POSIX-strict kernel requires:

    sizeof(sockaddr_in) = 16 for AF_INET
    sizeof(sockaddr_in6) = 28 for AF_INET6

Linux silently accepts oversized addrlen values, which masked the bug there.
Fix

Recompute the correct protocol-specific length from ss_family immediately
before each call to nsock_iod_set_localaddr() or bind() in:

    service_scan.cc
    nse_nsock.cc (2 instances)
    scan_engine_connect.cc

This preserves the intended behavior of eb79c42 (binding on -e as well as
-S) while making the code correct on all platforms.
Tested on

    FreeBSD 15.1-RELEASE amd64 — bug confirmed fixed
    nmap -p 22 --open -sV <subnet> produces clean output with no NSOCK errors

Repored by:	diizzy
Obtained from:	https://github.com/nmap/nmap/pull/3439

0 files changed, 0 insertions, 0 deletions