1 files changed, 2 insertions, 0 deletions

diff --git a/fs/ubifs/lpt_commit.c b/fs/ubifs/lpt_commit.c
index 8546865a9104..eed5a0025d63 100644
--- a/fs/ubifs/lpt_commit.c
+++ b/fs/ubifs/lpt_commit.c
@@ -1089,6 +1089,8 @@ static int is_a_node(struct ubifs_info *c, uint8_t *buf, int len)
         int pos = 0, node_type, node_len;
         uint16_t crc, calc_crc;
 
+        if (len < UBIFS_LPT_CRC_BYTES + (UBIFS_LPT_TYPE_BITS + 7) / 8)
+                return 0;
         node_type = ubifs_unpack_bits(&addr, &pos, UBIFS_LPT_TYPE_BITS);
         if (node_type == UBIFS_LPT_NOT_A_NODE)
                 return 0;