2 files changed, 6 insertions, 0 deletions

diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c
index 8582e12e4a6..0b9d03c54dc 100644
--- a/net/ipv4/ipmr.c
+++ b/net/ipv4/ipmr.c
@@ -802,6 +802,9 @@ static int ipmr_mfc_add(struct net *net, struct mfcctl *mfc, int mrtsock)
         int line;
         struct mfc_cache *uc, *c, **cp;
 
+        if (mfc->mfcc_parent >= MAXVIFS)
+                return -ENFILE;
+
         line = MFC_HASH(mfc->mfcc_mcastgrp.s_addr, mfc->mfcc_origin.s_addr);
 
         for (cp = &net->ipv4.mfc_cache_array[line];
diff --git a/net/ipv6/ip6mr.c b/net/ipv6/ip6mr.c
index 52e0f74fdfe..23e4ac0cc30 100644
--- a/net/ipv6/ip6mr.c
+++ b/net/ipv6/ip6mr.c
@@ -1113,6 +1113,9 @@ static int ip6mr_mfc_add(struct net *net, struct mf6cctl *mfc, int mrtsock)
         unsigned char ttls[MAXMIFS];
         int i;
 
+        if (mfc->mf6cc_parent >= MAXMIFS)
+                return -ENFILE;
+
         memset(ttls, 255, MAXMIFS);
         for (i = 0; i < MAXMIFS; i++) {
                 if (IF_ISSET(i, &mfc->mf6cc_ifset))