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| author | drh <> | 2021-06-07 13:50:36 +0000 |
|---|---|---|
| committer | drh <> | 2021-06-07 13:50:36 +0000 |
| commit | ccf0bb49bb850f1ce71c3942b6a076f4e4335a12 (patch) | |
| tree | 60078c73f1949b3fc077c79af0d41f891d917e20 /src/btree.c | |
| parent | fe972341a5a1993382aa75b3aa3eb0026c800ff2 (diff) | |
| download | sqlite-ccf0bb49bb850f1ce71c3942b6a076f4e4335a12.tar.gz sqlite-ccf0bb49bb850f1ce71c3942b6a076f4e4335a12.zip | |
Avoid use of uninitialized memory while running defragmentPage() on a
corrupt database file.
dbsqlfuzz 4c45cecc0b255aaf2ea85453ccd17e814fd0b6b2
FossilOrigin-Name: 35e40d75754ec6fb93fe57c6ecbe731104e77c997d7e17ef1a22984837dfcab2
Diffstat (limited to 'src/btree.c')
| -rw-r--r-- | src/btree.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/btree.c b/src/btree.c index 371f8d15c..d1e84d0a6 100644 --- a/src/btree.c +++ b/src/btree.c @@ -1535,7 +1535,7 @@ static int defragmentPage(MemPage *pPage, int nMaxFrag){ if( temp==0 ){ if( cbrk==pc ) continue; temp = sqlite3PagerTempSpace(pPage->pBt->pPager); - memcpy(&temp[iCellStart], &data[iCellStart], (cbrk+size) - iCellStart); + memcpy(&temp[iCellStart], &data[iCellStart], usableSize - iCellStart); src = temp; } memcpy(&data[cbrk], &src[pc], size); |