diff options
Diffstat (limited to 'vendor/github.com/klauspost/compress/zstd/seqdec.go')
| -rw-r--r-- | vendor/github.com/klauspost/compress/zstd/seqdec.go | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/vendor/github.com/klauspost/compress/zstd/seqdec.go b/vendor/github.com/klauspost/compress/zstd/seqdec.go index 15a45f7b5..39238e16a 100644 --- a/vendor/github.com/klauspost/compress/zstd/seqdec.go +++ b/vendor/github.com/klauspost/compress/zstd/seqdec.go @@ -64,6 +64,7 @@ type sequenceDecs struct { hist []byte literals []byte out []byte + windowSize int maxBits uint8 } @@ -82,6 +83,7 @@ func (s *sequenceDecs) initialize(br *bitReader, hist *history, literals, out [] s.hist = hist.b s.prevOffset = hist.recentOffsets s.maxBits = s.litLengths.fse.maxBits + s.offsets.fse.maxBits + s.matchLengths.fse.maxBits + s.windowSize = hist.windowSize s.out = out return nil } @@ -131,6 +133,9 @@ func (s *sequenceDecs) decode(seqs int, br *bitReader, hist []byte) error { if matchOff > len(s.out)+len(hist)+litLen { return fmt.Errorf("match offset (%d) bigger than current history (%d)", matchOff, len(s.out)+len(hist)+litLen) } + if matchOff > s.windowSize { + return fmt.Errorf("match offset (%d) bigger than window size (%d)", matchOff, s.windowSize) + } if matchOff == 0 && matchLen > 0 { return fmt.Errorf("zero matchoff and matchlen > 0") } |