Backport fix from commit 125d817

This fixes a read of unitialized memory. Full commit hash: 125d81774f.
2016-10-18 14:52:34 -07:00
parent f45b157d95
commit 7b06ad7a05
1 changed files with 1 additions and 0 deletions
@@ -2944,6 +2944,7 @@ size_t ZSTDv05_decodeLiteralsBlock(ZSTDv05_DCtx* dctx,
        {
            size_t litSize, litCSize, singleStream=0;
            U32 lhSize = ((istart[0]) >> 4) & 3;
+            if (srcSize < 5) return ERROR(corruption_detected);   /* srcSize >= MIN_CBLOCK_SIZE == 3; here we need up to 5 for case 3 */
            switch(lhSize)
            {
            case 0: case 1: default:   /* note : default is impossible, since lhSize into [0..3] */