From: Michael Niedermayer <michael@niedermayer.cc>
To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Subject: [FFmpeg-devel] [PATCH] avcodec/h263dec: Check input size before GEOV/GEOX special case handling
Date: Fri, 25 Feb 2022 16:29:40 +0100
Message-ID: <20220225152940.26446-1-michael@niedermayer.cc> (raw)
Fixes: Timeout
Fixes: 44921/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MPEG4_fuzzer-6546588791603200
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
libavcodec/h263dec.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/libavcodec/h263dec.c b/libavcodec/h263dec.c
index e940b7f7c7..56a41f6d05 100644
--- a/libavcodec/h263dec.c
+++ b/libavcodec/h263dec.c
@@ -702,6 +702,7 @@ frame_end:
if (s->last_picture_ptr || s->low_delay) {
if ( pict->format == AV_PIX_FMT_YUV420P
+ && buf_size*16LL > s->mb_num
&& (s->codec_tag == AV_RL32("GEOV") || s->codec_tag == AV_RL32("GEOX"))) {
int x, y, p;
av_frame_make_writable(pict);
--
2.17.1
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next reply other threads:[~2022-02-25 15:30 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-25 15:29 Michael Niedermayer [this message]
2022-02-25 20:22 ` Andreas Rheinhardt
2022-02-25 21:06 ` Michael Niedermayer
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