Module: libav
Branch: master
Commit: 1743938df10dd888484f964d5af8fd3957d26809
Author: Martin Storsjö <mar...@martin.st>
Committer: Martin Storsjö <mar...@martin.st>
Date: Tue Sep 11 14:41:42 2012 +0300
rtpdec_jpeg: Disallow using the reserved q values
Signed-off-by: Martin Storsjö <mar...@martin.st>
---
libavformat/rtpdec_jpeg.c | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/libavformat/rtpdec_jpeg.c b/libavformat/rtpdec_jpeg.c
index 3f47e71..3f53887 100644
--- a/libavformat/rtpdec_jpeg.c
+++ b/libavformat/rtpdec_jpeg.c
@@ -304,6 +304,10 @@ static int jpeg_parse_packet(AVFormatContext *ctx,
PayloadContext *jpeg,
qtable_len = jpeg->qtables_len[q - 128];
}
} else { /* q <= 127 */
+ if (q == 0 || q > 99) {
+ av_log(ctx, AV_LOG_ERROR, "Reserved q value %d\n", q);
+ return AVERROR_INVALIDDATA;
+ }
create_default_qtables(new_qtables, q);
qtables = new_qtables;
qtable_len = sizeof(new_qtables);
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