ambisonics mode > 1 does not initialize any layer but layer 0
is unconditionally dereferenced
Fixes: poc-2024-11
Fixes: null pointer dereference
Found-by: 苏童 <220235...@seu.edu.cn>
Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc>
---
libavformat/iamf_parse.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavformat/iamf_parse.c b/libavformat/iamf_parse.c
index 4aed894796f..1e1de167e6d 100644
--- a/libavformat/iamf_parse.c
+++ b/libavformat/iamf_parse.c
@@ -413,7 +413,7 @@ static int ambisonics_config(void *s, AVIOContext *pb,
ambisonics_mode = ffio_read_leb(pb);
if (ambisonics_mode > 1)
- return 0;
+ return AVERROR_INVALIDDATA;
output_channel_count = avio_r8(pb); // C
substream_count = avio_r8(pb); // N
--
2.47.0
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