Fixes: Timeout
Fixes: 3707/clusterfuzz-testcase-6465922706440192
Found-by: continuous fuzzing process
https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc>
---
libavcodec/xan.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/libavcodec/xan.c b/libavcodec/xan.c
index 8b4ec82405..1ccf164847 100644
--- a/libavcodec/xan.c
+++ b/libavcodec/xan.c
@@ -131,7 +131,10 @@ static int xan_huffman_decode(uint8_t *dest, int dest_len,
return ret;
while (val != 0x16) {
- unsigned idx = val - 0x17 + get_bits1(&gb) * byte;
+ unsigned idx;
+ if (get_bits_left(&gb) < 1)
+ return AVERROR_INVALIDDATA;
+ idx = val - 0x17 + get_bits1(&gb) * byte;
if (idx >= 2 * byte)
return AVERROR_INVALIDDATA;
val = src[idx];
--
2.15.0
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