avcodec/iff: Fix invalid pointer intermediates in decode_deep_rle32()

Reviewed-by: Peter Ross <pross@xvid.org> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
5 years ago · bc41a29a5a
parent 64b80cb04b
commit bc41a29a5a
1 changed files with 1 additions and 1 deletions
--- a/libavcodec/iff.c
+++ b/libavcodec/iff.c
@ -715,7 +715,7 @@ static void decode_deep_rle32(uint8_t *dst, const uint8_t *src, int src_size, in
 {
    const uint8_t *src_end = src + src_size;
    int x = 0, y = 0, i;
-    while (src + 5 <= src_end) {
+    while (src_end - src >= 5) {
        int opcode;
        opcode = *(int8_t *)src++;
        if (opcode >= 0) {