From cf59649539e653db8285996af2b161be9693a49d Mon Sep 17 00:00:00 2001
From: Vinicius Ferrao <ferrao@versatuphpc.com.br>
Date: Thu, 5 Nov 2026 15:58:56 -0800
Subject: [PATCH] xdr_mbuf.c: Add a check for the return value for
 xdrmbuf_getbytes()

The xdrmbuf_getlong() function failed to check for the return
value from xdrmbuf_getbytes().  This could have resulted in
a failure during NFS RPC message processing.

Reviewed by:	rmacklem
MFC after:	2 weeks
Sponsored by:	VersatusHPC
---
 sys/xdr/xdr_mbuf.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/sys/xdr/xdr_mbuf.c b/sys/xdr/xdr_mbuf.c
index 6cb72f8fe1b4..27ff71848574 100644
--- a/sys/xdr/xdr_mbuf.c
+++ b/sys/xdr/xdr_mbuf.c
@@ -151,7 +151,8 @@ xdrmbuf_getlong(XDR *xdrs, long *lp)
 	if (p) {
 		t = *p;
 	} else {
-		xdrmbuf_getbytes(xdrs, (char *) &t, sizeof(int32_t));
+		if (!xdrmbuf_getbytes(xdrs, (char *) &t, sizeof(int32_t)))
+			return (FALSE);
 	}
 
 	*lp = ntohl(t);