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Bug 1182599 - Check for corrupted delta array in UrlClassifier. r=francois

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This commit is contained in:
Gian-Carlo Pascutto 2015-07-14 09:37:12 +02:00
parent 0a2f73b72e
commit 6ffc4e3652
1 changed files with 3 additions and 0 deletions
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3
toolkit/components/url-classifier/nsUrlClassifierPrefixSet.cpp
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@ -322,6 +322,9 @@ nsUrlClassifierPrefixSet::LoadFromFd(AutoFDClose& fileFd)
for (uint32_t i = 0; i < indexSize; i++) {
uint32_t numInDelta = i == indexSize - 1 ? deltaSize - indexStarts[i]
: indexStarts[i + 1] - indexStarts[i];
if (numInDelta > DELTAS_LIMIT) {
return NS_ERROR_FILE_CORRUPTED;
}
if (numInDelta > 0) {
mIndexDeltas[i].SetLength(numInDelta);
mTotalPrefixes += numInDelta;