pppd: Fix bounds check in EAP code am: f9fec5c369 am: 0adf11c24c am: 5788de2192 am: 024dbd1dc3 am: 39855b1e5b am: 80896b9c49 am: fdffd0deafandroid-11.0.0_r16android11-d1-b-release

Change-Id: I83effc719d9484718ffacb16a6e82499735f75c4

1 files changed, 2 insertions, 2 deletions

diff --git a/pppd/eap.c b/pppd/eap.c
index 6ea6c1f..5940ebf 100644
--- a/pppd/eap.c
+++ b/pppd/eap.c
@@ -1421,7 +1421,7 @@ int len;
 		}
 
 		/* Not so likely to happen. */
-		if (vallen >= len + sizeof (rhostname)) {
+		if (len - vallen >= sizeof (rhostname)) {
 			dbglog("EAP: trimming really long peer name down");
 			BCOPY(inp + vallen, rhostname, sizeof (rhostname) - 1);
 			rhostname[sizeof (rhostname) - 1] = '\0';
@@ -1847,7 +1847,7 @@ int len;
 		}
 
 		/* Not so likely to happen. */
-		if (vallen >= len + sizeof (rhostname)) {
+		if (len - vallen >= sizeof (rhostname)) {
 			dbglog("EAP: trimming really long peer name down");
 			BCOPY(inp + vallen, rhostname, sizeof (rhostname) - 1);
 			rhostname[sizeof (rhostname) - 1] = '\0';