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From: Michael Niedermayer <michael@niedermayer.cc>
To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Subject: [FFmpeg-devel] [PATCH 13/15] avformat/xwma: sanity check bits_per_coded_sample
Date: Sun,  1 Oct 2023 00:30:44 +0200
Message-ID: <20230930223046.22896-13-michael@niedermayer.cc> (raw)
In-Reply-To: <20230930223046.22896-1-michael@niedermayer.cc>

Fixes: signed integer overflow: 65312 * 524296 cannot be represented in type 'int'
Fixes: 51896/clusterfuzz-testcase-minimized-ffmpeg_dem_XWMA_fuzzer-6595971445555200

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
 libavformat/xwma.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavformat/xwma.c b/libavformat/xwma.c
index 12689f37fd7..b830f9ed75f 100644
--- a/libavformat/xwma.c
+++ b/libavformat/xwma.c
@@ -151,7 +151,7 @@ static int xwma_read_header(AVFormatContext *s)
                st->codecpar->ch_layout.nb_channels);
         return AVERROR_INVALIDDATA;
     }
-    if (!st->codecpar->bits_per_coded_sample) {
+    if (!st->codecpar->bits_per_coded_sample || st->codecpar->bits_per_coded_sample > 64) {
         av_log(s, AV_LOG_WARNING, "Invalid bits_per_coded_sample: %d\n",
                st->codecpar->bits_per_coded_sample);
         return AVERROR_INVALIDDATA;
-- 
2.17.1

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  parent reply	other threads:[~2023-09-30 22:32 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-09-30 22:30 [FFmpeg-devel] [PATCH 01/15] avformat/concatdec: Check in/outpoint for overflow Michael Niedermayer
2023-09-30 22:30 ` [FFmpeg-devel] [PATCH 02/15] avformat/jacosubdec: Factorize code in get_shift() a bit Michael Niedermayer
2023-09-30 22:30 ` [FFmpeg-devel] [PATCH 03/15] avformat/jacosubdec: avoid signed integer overflows in get_shift() Michael Niedermayer
2023-09-30 22:30 ` [FFmpeg-devel] [PATCH 04/15] avformat/jacosubdec: Check timeres Michael Niedermayer
2023-09-30 22:30 ` [FFmpeg-devel] [PATCH 05/15] avformat/mov: compute absolute dts difference without overflow in mov_find_next_sample() Michael Niedermayer
2023-09-30 22:30 ` [FFmpeg-devel] [PATCH 06/15] avformat/rpl: Check for number_of_chunks overflow Michael Niedermayer
2023-09-30 22:30 ` [FFmpeg-devel] [PATCH 07/15] avformat/sbgdec: Check for period overflow Michael Niedermayer
2023-10-03 11:06   ` Nicolas George
2023-10-03 14:12     ` Michael Niedermayer
2023-09-30 22:30 ` [FFmpeg-devel] [PATCH 08/15] avformat/sbgdec: Check for negative duration or un-representable end pts Michael Niedermayer
2023-10-03 14:40   ` Nicolas George
2023-09-30 22:30 ` [FFmpeg-devel] [PATCH 09/15] avformat/tta: Better totalframes check Michael Niedermayer
2023-09-30 22:30 ` [FFmpeg-devel] [PATCH 10/15] avformat/wavdec: Check left avio_tell for overflow Michael Niedermayer
2023-09-30 22:30 ` [FFmpeg-devel] [PATCH 11/15] avformat/matroskadec: Check prebuffered_ns " Michael Niedermayer
2023-09-30 22:30 ` [FFmpeg-devel] [PATCH 12/15] avformat/westwood_vqa: Do not leave vqfl_chunk_size invalid Michael Niedermayer
2023-09-30 22:48   ` Michael Niedermayer
2023-09-30 22:30 ` Michael Niedermayer [this message]
2023-09-30 22:30 ` [FFmpeg-devel] [PATCH 14/15] avformat/asfdec_f: Saturate presentation time in marker Michael Niedermayer
2023-09-30 22:30 ` [FFmpeg-devel] [PATCH 15/15] avcodec/h264_parser: saturate dts a bit Michael Niedermayer
2023-10-02 12:03 ` [FFmpeg-devel] [PATCH 01/15] avformat/concatdec: Check in/outpoint for overflow Nicolas George
2023-10-03 14:11   ` Michael Niedermayer
2023-10-08 19:35 ` Michael Niedermayer

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