done

src/Compression/CompressionCodecDelta.cpp

@@ -132,6 +132,10 @@ void CompressionCodecDelta::doDecompressData(const char * source, UInt32 source_
         throw Exception("Cannot decompress. File has wrong header", ErrorCodes::CANNOT_DECOMPRESS);
 
     UInt8 bytes_size = source[0];
+
+    if (bytes_size == 0)
+        throw Exception("Cannot decompress. File has wrong header", ErrorCodes::CANNOT_DECOMPRESS);
+
     UInt8 bytes_to_skip = uncompressed_size % bytes_size;
 
     if (UInt32(2 + bytes_to_skip) > source_size)

src/Compression/CompressionCodecDoubleDelta.cpp

@@ -502,6 +502,10 @@ void CompressionCodecDoubleDelta::doDecompressData(const char * source, UInt32 s
         throw Exception("Cannot decompress. File has wrong header", ErrorCodes::CANNOT_DECOMPRESS);
 
     UInt8 bytes_size = source[0];
+
+    if (bytes_size == 0)
+        throw Exception("Cannot decompress. File has wrong header", ErrorCodes::CANNOT_DECOMPRESS);
+
     UInt8 bytes_to_skip = uncompressed_size % bytes_size;
 
     if (UInt32(2 + bytes_to_skip) > source_size)

src/Compression/CompressionCodecGorilla.cpp

@@ -410,6 +410,10 @@ void CompressionCodecGorilla::doDecompressData(const char * source, UInt32 sourc
         throw Exception("Cannot decompress. File has wrong header", ErrorCodes::CANNOT_DECOMPRESS);
 
     UInt8 bytes_size = source[0];
+
+    if (bytes_size == 0)
+        throw Exception("Cannot decompress. File has wrong header", ErrorCodes::CANNOT_DECOMPRESS);
+
     UInt8 bytes_to_skip = uncompressed_size % bytes_size;
 
     if (UInt32(2 + bytes_to_skip) > source_size)

src/Compression/CompressionCodecLZ4.cpp

@@ -62,6 +62,7 @@ private:
 namespace ErrorCodes
 {
     extern const int CANNOT_COMPRESS;
+    extern const int CANNOT_DECOMPRESS;
     extern const int ILLEGAL_SYNTAX_FOR_CODEC_TYPE;
     extern const int ILLEGAL_CODEC_PARAMETER;
 }
@@ -93,7 +94,10 @@ UInt32 CompressionCodecLZ4::doCompressData(const char * source, UInt32 source_si
 
 void CompressionCodecLZ4::doDecompressData(const char * source, UInt32 source_size, char * dest, UInt32 uncompressed_size) const
 {
-    LZ4::decompress(source, dest, source_size, uncompressed_size, lz4_stat);
+    bool success = LZ4::decompress(source, dest, source_size, uncompressed_size, lz4_stat);
+
+    if (!success)
+        throw Exception("Cannot decomress", ErrorCodes::CANNOT_DECOMPRESS);
 }
 
 void registerCodecLZ4(CompressionCodecFactory & factory)

src/Compression/LZ4_decompress_faster.cpp

@@ -412,13 +412,16 @@ template <> void inline copyOverlap<32, false>(UInt8 * op, const UInt8 *& match,
 /// See also https://stackoverflow.com/a/30669632
 
 template <size_t copy_amount, bool use_shuffle>
-void NO_INLINE decompressImpl(
+bool NO_INLINE decompressImpl(
      const char * const source,
      char * const dest,
+     size_t source_size,
      size_t dest_size)
 {
     const UInt8 * ip = reinterpret_cast<const UInt8 *>(source);
     UInt8 * op = reinterpret_cast<UInt8 *>(dest);
+    const UInt8 * const input_end = ip + source_size;
+    UInt8 * const output_begin = op;
     UInt8 * const output_end = op + dest_size;
 
     /// Unrolling with clang is doing >10% performance degrade.
@@ -461,13 +464,19 @@ void NO_INLINE decompressImpl(
         /// output: xyzHello, w
         ///                  ^-op (we will overwrite excessive bytes on next iteration)
 
-        wildCopy<copy_amount>(op, ip, copy_end);    /// Here we can write up to copy_amount - 1 bytes after buffer.
+        {
+            auto * target = std::min(copy_end, output_end);
+            wildCopy<copy_amount>(op, ip, target);    /// Here we can write up to copy_amount - 1 bytes after buffer.
+
+            if (target == output_end)
+                return true;
+        }
 
         ip += length;
         op = copy_end;
 
-        if (copy_end >= output_end)
-            return;
+        if (unlikely(ip > input_end))
+            return false;
 
         /// Get match offset.
 
@@ -475,6 +484,9 @@ void NO_INLINE decompressImpl(
         ip += 2;
         const UInt8 * match = op - offset;
 
+        if (unlikely(match < output_begin))
+            return false;
+
         /// Get match length.
 
         length = token & 0x0F;
@@ -515,7 +527,10 @@ void NO_INLINE decompressImpl(
 
         copy<copy_amount>(op, match);   /// copy_amount + copy_amount - 1 - 4 * 2 bytes after buffer.
         if (length > copy_amount * 2)
-            wildCopy<copy_amount>(op + copy_amount, match + copy_amount, copy_end);
+        {
+            auto * target = std::min(copy_end, output_end);
+            wildCopy<copy_amount>(op + copy_amount, match + copy_amount, target);
+        }
 
         op = copy_end;
     }
@@ -524,7 +539,7 @@ void NO_INLINE decompressImpl(
 }
 
 
-void decompress(
+bool decompress(
     const char * const source,
     char * const dest,
     size_t source_size,
@@ -532,7 +547,7 @@ void decompress(
     PerformanceStatistics & statistics [[maybe_unused]])
 {
     if (source_size == 0 || dest_size == 0)
-        return;
+        return true;
 
     /// Don't run timer if the block is too small.
     if (dest_size >= 32768)
@@ -542,24 +557,27 @@ void decompress(
         /// Run the selected method and measure time.
 
         Stopwatch watch;
+        bool success = true;
         if (best_variant == 0)
-            decompressImpl<16, true>(source, dest, dest_size);
+            success = decompressImpl<16, true>(source, dest, source_size, dest_size);
         if (best_variant == 1)
-            decompressImpl<16, false>(source, dest, dest_size);
+            success = decompressImpl<16, false>(source, dest, source_size, dest_size);
         if (best_variant == 2)
-            decompressImpl<8, true>(source, dest, dest_size);
+            success = decompressImpl<8, true>(source, dest, source_size, dest_size);
         if (best_variant == 3)
-            decompressImpl<32, false>(source, dest, dest_size);
+            success = decompressImpl<32, false>(source, dest, source_size, dest_size);
 
         watch.stop();
 
         /// Update performance statistics.
 
         statistics.data[best_variant].update(watch.elapsedSeconds(), dest_size);
+
+        return success;
     }
     else
     {
-        decompressImpl<8, false>(source, dest, dest_size);
+        return decompressImpl<8, false>(source, dest, source_size, dest_size);
     }
 }
 

src/Compression/LZ4_decompress_faster.h

@@ -122,14 +122,14 @@ struct PerformanceStatistics
             return choose_method;
     }
 
-    PerformanceStatistics() {}
-    PerformanceStatistics(ssize_t choose_method_) : choose_method(choose_method_) {}
+    PerformanceStatistics() = default;
+    explicit PerformanceStatistics(ssize_t choose_method_) : choose_method(choose_method_) {}
 };
 
 
 /** This method dispatch to one of different implementations depending on performance statistics.
   */
-void decompress(
+bool decompress(
     const char * const source,
     char * const dest,
     size_t source_size,