From cc3271ebf3aacdbbc77fdd527375af78ab12ea8d Mon Sep 17 00:00:00 2001 From: Amar Tumballi Date: Tue, 24 Jul 2018 13:25:12 +0530 Subject: dict: handle negative key/value length while unserialize Fixes: bz#1625089 Change-Id: Ie56df0da46c242846a1ba51ccb9e011af118b119 Signed-off-by: Amar Tumballi --- libglusterfs/src/dict.c | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'libglusterfs') diff --git a/libglusterfs/src/dict.c b/libglusterfs/src/dict.c index 8849baf290a..5516a1f2132 100644 --- a/libglusterfs/src/dict.c +++ b/libglusterfs/src/dict.c @@ -3318,6 +3318,13 @@ dict_unserialize (char *orig_buf, int32_t size, dict_t **fill) vallen = ntoh32 (hostord); buf += DICT_DATA_HDR_VAL_LEN; + if ((keylen < 0) || (vallen < 0)) { + gf_msg_callingfn ("dict", GF_LOG_ERROR, 0, + LG_MSG_UNDERSIZED_BUF, + "undersized length passed " + "key:%d val:%d", keylen, vallen); + goto out; + } if ((buf + keylen) > (orig_buf + size)) { gf_msg_callingfn ("dict", GF_LOG_ERROR, 0, LG_MSG_UNDERSIZED_BUF, -- cgit