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Merge pull request #3285 from julek-wolfssl/DtlsCheckWindow-window-check

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Fix window check
This commit is contained in:
John Safranek
2020-09-11 11:35:02 -07:00
committed by GitHub
parent 01ad4d59a1 e34ccaf481
commit 3e77dcab5d
1 changed files with 9 additions and 2 deletions
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11
src/internal.c
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@ -12906,8 +12906,15 @@ static WC_INLINE int DtlsCheckWindow(WOLFSSL* ssl)
}
#endif
else if (curLT) {
word32 idx = diff / DTLS_WORD_BITS;
word32 newDiff = diff % DTLS_WORD_BITS;
word32 idx;
word32 newDiff;
if (diff == 0) {
WOLFSSL_MSG("DTLS sanity check failed");
return 0;
}
diff--;
idx = diff / DTLS_WORD_BITS;
newDiff = diff % DTLS_WORD_BITS;
/* verify idx is valid for window array */
if (idx >= WOLFSSL_DTLS_WINDOW_WORDS) {