The previous check only caught sizes from -AV_INPUT_BUFFER_PADDING_SIZE
to -1.
This fixes ubsan runtime error: signed integer overflow: 2147483647 + 32
cannot be represented in type 'int'
Signed-off-by: Andreas Cadhalpun <andreas.cadhal...@googlemail.com>
---
libavcodec/avpacket.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavcodec/avpacket.c b/libavcodec/avpacket.c
index 97c12b5..4901d36 100644
--- a/libavcodec/avpacket.c
+++ b/libavcodec/avpacket.c
@@ -71,7 +71,7 @@ void av_packet_free(AVPacket **pkt)
static int packet_alloc(AVBufferRef **buf, int size)
{
int ret;
- if ((unsigned)size >= (unsigned)size + AV_INPUT_BUFFER_PADDING_SIZE)
+ if (size < 0 || size >= INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE)
return AVERROR(EINVAL);
ret = av_buffer_realloc(buf, size + AV_INPUT_BUFFER_PADDING_SIZE);
--
2.6.4
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