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new 06d19d000d avformat/rsd: reject short ADPCM_THP extradata reads
06d19d000d is described below
commit 06d19d000d8e659e09490bfbcceaa6bb23fb2edb
Author: Weidong Wang <[email protected]>
AuthorDate: Sat Mar 14 13:18:41 2026 -0500
Commit: michaelni <[email protected]>
CommitDate: Sat Mar 21 00:29:04 2026 +0000
avformat/rsd: reject short ADPCM_THP extradata reads
Use ffio_read_size() to enforce exact-length reads of the per-channel
ADPCM_THP coefficient tables. Previously the return value of
avio_read() was unchecked, silently accepting truncated extradata.
---
libavformat/rsd.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/libavformat/rsd.c b/libavformat/rsd.c
index b9098646f6..8eb9f901e1 100644
--- a/libavformat/rsd.c
+++ b/libavformat/rsd.c
@@ -22,6 +22,7 @@
#include "libavutil/intreadwrite.h"
#include "avformat.h"
#include "avio.h"
+#include "avio_internal.h"
#include "demux.h"
#include "internal.h"
@@ -131,9 +132,9 @@ static int rsd_read_header(AVFormatContext *s)
return ret;
for (i = 0; i < par->ch_layout.nb_channels; i++) {
- if (avio_feof(pb))
- return AVERROR_EOF;
- avio_read(s->pb, st->codecpar->extradata + 32 * i, 32);
+ ret = ffio_read_size(s->pb, st->codecpar->extradata + 32 * i, 32);
+ if (ret < 0)
+ return ret;
avio_skip(s->pb, 8);
}
break;
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