avcodec/exr: fix skipping too long metadata values

2 years ago · f55f817955
parent c9aa6164d4
commit f55f817955
1 changed files with 3 additions and 1 deletions
--- a/libavcodec/exr.c
+++ b/libavcodec/exr.c
@ -1962,7 +1962,7 @@ static int decode_header(EXRContext *s, AVFrame *frame)
        {
            uint8_t name[256] = { 0 };
            uint8_t type[256] = { 0 };
-            uint8_t value[256] = { 0 };
+            uint8_t value[8192] = { 0 };
            int i = 0, size;

            while (bytestream2_get_bytes_left(gb) > 0 &&
@ -1980,6 +1980,8 @@ static int decode_header(EXRContext *s, AVFrame *frame)
            size = bytestream2_get_le32(gb);

            bytestream2_get_buffer(gb, value, FFMIN(sizeof(value) - 1, size));
+            if (size > sizeof(value) - 1)
+                bytestream2_skip(gb, size - (sizeof(value) - 1));
            if (!strcmp(type, "string"))
                av_dict_set(&metadata, name, value, 0);
        }