git: 599c3d7d7ae5 - main - bpf: assert that calculated header length fits in sockaddr

The branch main has been updated by glebius:

URL: https://cgit.FreeBSD.org/src/commit/?id=599c3d7d7ae54727bca8e6a40aee813522d8e6ff

commit 599c3d7d7ae54727bca8e6a40aee813522d8e6ff
Author:     Luis Castellanos <ing.castellanosdz@gmail.com>
AuthorDate: 2026-09-18 22:41:37 +0000
Commit:     Gleb Smirnoff <glebius@FreeBSD.org>
CommitDate: 2026-09-18 22:42:41 +0000

    bpf: assert that calculated header length fits in sockaddr
    
    Differential Revision:  https://reviews.freebsd.org/D59140
---
 sys/net/bpf_ifnet.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sys/net/bpf_ifnet.c b/sys/net/bpf_ifnet.c
index b1e9b63324f3..f4d294f1e8d9 100644
--- a/sys/net/bpf_ifnet.c
+++ b/sys/net/bpf_ifnet.c
@@ -145,6 +145,7 @@ bpf_ifnet_write(void *arg, struct mbuf *m, struct mbuf *mc, int flags)
 	};
 
 	if (hlen != 0) {
+		MPASS(hlen <= sizeof(dst.sa_data));
 		bcopy(mtod(m, const void *), &dst.sa_data, hlen);
 		ro.ro_prepend = (char *)&dst.sa_data;
 		ro.ro_plen = hlen;