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Added more bounds checking when saving a DTLS message fragment.

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John Safranek
2014-08-14 15:14:29 -07:00
parent 9d4fb79009
commit 7e6b3a86d5
1 changed files with 3 additions and 1 deletions
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4
src/internal.c
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@@ -2267,7 +2267,9 @@ void DtlsMsgListDelete(DtlsMsg* head, void* heap)
void DtlsMsgSet(DtlsMsg* msg, word32 seq, const byte* data, byte type, void DtlsMsgSet(DtlsMsg* msg, word32 seq, const byte* data, byte type,
word32 fragOffset, word32 fragSz) word32 fragOffset, word32 fragSz)
{ {
if (msg != NULL && data != NULL && msg->fragSz <= msg->sz) { if (msg != NULL && data != NULL && msg->fragSz <= msg->sz &&
fragOffset < msg->sz && (fragOffset + fragSz) <= msg->sz) {
msg->seq = seq; msg->seq = seq;
msg->type = type; msg->type = type;
msg->fragSz += fragSz; msg->fragSz += fragSz;