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-rw-r--r--source/lib/util_sid.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/source/lib/util_sid.c b/source/lib/util_sid.c
index f656bb13dc8..aa49b860d03 100644
--- a/source/lib/util_sid.c
+++ b/source/lib/util_sid.c
@@ -408,6 +408,9 @@ bool sid_parse(const char *inbuf, size_t len, DOM_SID *sid)
sid->sid_rev_num = CVAL(inbuf, 0);
sid->num_auths = CVAL(inbuf, 1);
+ if (sid->num_auths > MAXSUBAUTHS) {
+ return false;
+ }
memcpy(sid->id_auth, inbuf+2, 6);
if (len < 8 + sid->num_auths*4)
return False;