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-rw-r--r--src/liblzma/common/block_header_decoder.c5
-rw-r--r--src/liblzma/common/index_decoder.c5
-rw-r--r--src/liblzma/common/index_hash.c5
-rw-r--r--src/liblzma/common/stream_flags_decoder.c10
4 files changed, 20 insertions, 5 deletions
diff --git a/src/liblzma/common/block_header_decoder.c b/src/liblzma/common/block_header_decoder.c
index 1dd982f6..730c5244 100644
--- a/src/liblzma/common/block_header_decoder.c
+++ b/src/liblzma/common/block_header_decoder.c
@@ -67,8 +67,11 @@ lzma_block_header_decode(lzma_block *block,
const size_t in_size = block->header_size - 4;
// Verify CRC32
- if (lzma_crc32(in, in_size, 0) != unaligned_read32le(in + in_size))
+ if (lzma_crc32(in, in_size, 0) != unaligned_read32le(in + in_size)) {
+#ifndef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
return LZMA_DATA_ERROR;
+#endif
+ }
// Check for unsupported flags.
if (in[1] & 0x3C)
diff --git a/src/liblzma/common/index_decoder.c b/src/liblzma/common/index_decoder.c
index e71fc6df..b2689885 100644
--- a/src/liblzma/common/index_decoder.c
+++ b/src/liblzma/common/index_decoder.c
@@ -180,8 +180,11 @@ index_decode(void *coder_ptr, const lzma_allocator *allocator,
return LZMA_OK;
if (((coder->crc32 >> (coder->pos * 8)) & 0xFF)
- != in[(*in_pos)++])
+ != in[(*in_pos)++]) {
+#ifndef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
return LZMA_DATA_ERROR;
+#endif
+ }
} while (++coder->pos < 4);
diff --git a/src/liblzma/common/index_hash.c b/src/liblzma/common/index_hash.c
index d7a0344b..e131fab7 100644
--- a/src/liblzma/common/index_hash.c
+++ b/src/liblzma/common/index_hash.c
@@ -313,8 +313,11 @@ lzma_index_hash_decode(lzma_index_hash *index_hash, const uint8_t *in,
return LZMA_OK;
if (((index_hash->crc32 >> (index_hash->pos * 8))
- & 0xFF) != in[(*in_pos)++])
+ & 0xFF) != in[(*in_pos)++]) {
+#ifndef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
return LZMA_DATA_ERROR;
+#endif
+ }
} while (++index_hash->pos < 4);
diff --git a/src/liblzma/common/stream_flags_decoder.c b/src/liblzma/common/stream_flags_decoder.c
index 1bc2f97c..84f9467f 100644
--- a/src/liblzma/common/stream_flags_decoder.c
+++ b/src/liblzma/common/stream_flags_decoder.c
@@ -39,8 +39,11 @@ lzma_stream_header_decode(lzma_stream_flags *options, const uint8_t *in)
const uint32_t crc = lzma_crc32(in + sizeof(lzma_header_magic),
LZMA_STREAM_FLAGS_SIZE, 0);
if (crc != unaligned_read32le(in + sizeof(lzma_header_magic)
- + LZMA_STREAM_FLAGS_SIZE))
+ + LZMA_STREAM_FLAGS_SIZE)) {
+#ifndef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
return LZMA_DATA_ERROR;
+#endif
+ }
// Stream Flags
if (stream_flags_decode(options, in + sizeof(lzma_header_magic)))
@@ -67,8 +70,11 @@ lzma_stream_footer_decode(lzma_stream_flags *options, const uint8_t *in)
// CRC32
const uint32_t crc = lzma_crc32(in + sizeof(uint32_t),
sizeof(uint32_t) + LZMA_STREAM_FLAGS_SIZE, 0);
- if (crc != unaligned_read32le(in))
+ if (crc != unaligned_read32le(in)) {
+#ifndef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
return LZMA_DATA_ERROR;
+#endif
+ }
// Stream Flags
if (stream_flags_decode(options, in + sizeof(uint32_t) * 2))