From: Andriy Gelman <andriy.gel...@gmail.com>
In the worst case the startcode prefix has 4 bytes.
This fixes a trigerred assertion:
Assertion dp <= max_size failed at libavcodec/cbs_h2645.c:1451
Found-by:libFuzzer
Signed-off-by: Andriy Gelman <andriy.gel...@gmail.com>
---
libavcodec/cbs_h2645.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavcodec/cbs_h2645.c b/libavcodec/cbs_h2645.c
index 88fa0029cd6..5f71d805848 100644
--- a/libavcodec/cbs_h2645.c
+++ b/libavcodec/cbs_h2645.c
@@ -1395,7 +1395,7 @@ static int
cbs_h2645_assemble_fragment(CodedBitstreamContext *ctx,
max_size = 0;
for (i = 0; i < frag->nb_units; i++) {
// Start code + content with worst-case emulation prevention.
- max_size += 3 + frag->units[i].data_size * 3 / 2;
+ max_size += 4 + frag->units[i].data_size * 3 / 2;
}
data = av_realloc(NULL, max_size + AV_INPUT_BUFFER_PADDING_SIZE);
--
2.24.0
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