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Enhance the btree search routine so that it does early detection of

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impossibly large keys and thereby avoids a large malloc() call.

FossilOrigin-Name: 3ecaaee69f49e43d38047b7d53b82689eba7f7d33541fcac3c32b6dc8a568458
This commit is contained in:
drh
2019-01-21 23:18:22 +00:00
parent 129371553c
commit 87c3ad4537
3 changed files with 9 additions and 9 deletions
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src/btree.c
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@@ -5475,7 +5475,7 @@ int sqlite3BtreeMovetoUnpacked(
testcase( nCell==0 ); /* Invalid key size: 0x80 0x80 0x00 */
testcase( nCell==1 ); /* Invalid key size: 0x80 0x80 0x01 */
testcase( nCell==2 ); /* Minimum legal index key size */
if( nCell<2 ){
if( nCell<2 || nCell/pCur->pBt->usableSize>pCur->pBt->nPage ){
rc = SQLITE_CORRUPT_PAGE(pPage);
goto moveto_finish;
}