klauspost
diff --git a/‎zstd/blockdec.go‎
Lines changed: 3 additions & 0 deletions b/‎zstd/blockdec.go‎
Lines changed: 3 additions & 0 deletions
diff --git a/‎zstd/testdata/good.zip‎
32.9 KB b/‎zstd/testdata/good.zip‎
32.9 KB
@@ -489,6 +489,9 @@ func (b *blockDec) decodeCompressed(hist *history) error {
 		return err
 	}
 	if hist.decoders.nSeqs == 0 {
+		if len(hist.decoders.literals) == 0 {
+			return errors.New("invalid block: no literals nor sequences found")
+		}
 		b.dst = append(b.dst, hist.decoders.literals...)
 		return nil
 	}
Original file line number	Diff line number	Diff line change
`@@ -489,6 +489,9 @@ func (b blockDec) decodeCompressed(hist history) error {`
`489`	`489`	`return err`
`490`	`490`	`}`
`491`	`491`	`if hist.decoders.nSeqs == 0 {`
	`492`	`+ if len(hist.decoders.literals) == 0 {`
	`493`	`+ return errors.New("invalid block: no literals nor sequences found")`
	`494`	`+ }`
`492`	`495`	`b.dst = append(b.dst, hist.decoders.literals...)`
`493`	`496`	`return nil`
`494`	`497`	`}`