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| author | drh <drh@noemail.net> | 2019-01-25 14:16:01 +0000 |
|---|---|---|
| committer | drh <drh@noemail.net> | 2019-01-25 14:16:01 +0000 |
| commit | 94f0a8342106b4e1af85bf658bdf1c12ed010c73 (patch) | |
| tree | 099f6026c33d50f3f6636b33bc587889a0cefd4e /src/memdb.c | |
| parent | 725a9c7f6c0d406cac38d41d286c023dd5896417 (diff) | |
| download | sqlite-94f0a8342106b4e1af85bf658bdf1c12ed010c73.tar.gz sqlite-94f0a8342106b4e1af85bf658bdf1c12ed010c73.zip | |
Fix the xFetch method of the "memdb" VFS (used by deserialize) so that it
is robust against corrupt database file.
FossilOrigin-Name: 2c1ef40e787a6bc355b50168527a47eb09acd30d0d88cff8336a434ad554115d
Diffstat (limited to 'src/memdb.c')
| -rw-r--r-- | src/memdb.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/src/memdb.c b/src/memdb.c index e7366961f..75e83a95d 100644 --- a/src/memdb.c +++ b/src/memdb.c @@ -310,8 +310,13 @@ static int memdbFetch( void **pp ){ MemFile *p = (MemFile *)pFile; - p->nMmap++; - *pp = (void*)(p->aData + iOfst); + if( iOfst+iAmt>p->sz ){ + assert( CORRUPT_DB ); + *pp = 0; + }else{ + p->nMmap++; + *pp = (void*)(p->aData + iOfst); + } return SQLITE_OK; } |