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-rw-r--r--core/fxcodec/lgif/fx_gif.cpp5
1 files changed, 5 insertions, 0 deletions
diff --git a/core/fxcodec/lgif/fx_gif.cpp b/core/fxcodec/lgif/fx_gif.cpp
index eb6bdd3bea..43a6460428 100644
--- a/core/fxcodec/lgif/fx_gif.cpp
+++ b/core/fxcodec/lgif/fx_gif.cpp
@@ -109,6 +109,11 @@ int32_t CGifLZWDecoder::Decode(uint8_t* des_buf, uint32_t& des_size) {
return 0;
}
if (avail_in > 0) {
+ if (bits_left > 31) {
+ if (err_msg_ptr)
+ FXSYS_strncpy(err_msg_ptr, "Decode Error", GIF_MAX_ERROR_SIZE - 1);
+ return 0;
+ }
code_store |= (*next_in++) << bits_left;
avail_in--;
bits_left += 8;