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Fully Bounds Check Hash Table Reads

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This commit is contained in:
W. Felix Handte 2018-03-21 11:21:07 -04:00
parent f895b9a6c6
commit a992d11fc2
1 changed files with 2 additions and 2 deletions
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4
lib/lz4hc.c
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@ -222,7 +222,7 @@ LZ4HC_InsertAndGetWiderMatch (
DEBUGLOG(7, "First match at index %u / %u (lowLimit)",
matchIndex, lowLimit);
while ((matchIndex>=lowLimit) && (nbAttempts)) {
while ((matchIndex>=lowLimit) && (matchIndex < (ip - base)) && (nbAttempts)) {
DEBUGLOG(7, "remaining attempts : %i", nbAttempts);
nbAttempts--;
if (matchIndex >= dictLimit) {
@ -286,7 +286,7 @@ LZ4HC_InsertAndGetWiderMatch (
matchIndex -= (U32)backLength; /* let's go to farthest segment position, will find a match of length currentSegmentLength + maybe some back */
}
} } } }
} /* while ((matchIndex>=lowLimit) && (nbAttempts)) */
} /* while ((matchIndex>=lowLimit) && (matchIndex < (ip - base)) && (nbAttempts)) */
return longest;
}