From: Michael Niedermayer <michael@niedermayer.cc>
To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Subject: [FFmpeg-devel] [PATCH 1/6] avcodec/osq: Check that pkt_offset does not exceed pkt size
Date: Thu, 21 Sep 2023 20:09:07 +0200
Message-ID: <20230921180912.10733-1-michael@niedermayer.cc> (raw)
Fixes: out of array access
Fixes: 62164/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_OSQ_fuzzer-6227491892887552
Fixes: 62164/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_OSQ_fuzzer-6268561729126400
Fixes: 62164/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_OSQ_fuzzer-6414805046788096
Fixes: 62164/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_OSQ_fuzzer-6538151088488448
Fixes: 62164/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_OSQ_fuzzer-6608131540779008
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
libavcodec/osq.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/libavcodec/osq.c b/libavcodec/osq.c
index e7f11691d2e..bcc75fef6fc 100644
--- a/libavcodec/osq.c
+++ b/libavcodec/osq.c
@@ -408,6 +408,9 @@ static int osq_receive_frame(AVCodecContext *avctx, AVFrame *frame)
GetBitContext *gb = &s->gb;
int ret, n;
+ if (s->pkt_offset > s->pkt->size)
+ s->pkt_offset = 0;
+
while (s->bitstream_size < s->max_framesize) {
int size;
--
2.17.1
_______________________________________________
ffmpeg-devel mailing list
ffmpeg-devel@ffmpeg.org
https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
To unsubscribe, visit link above, or email
ffmpeg-devel-request@ffmpeg.org with subject "unsubscribe".
next reply other threads:[~2023-09-21 18:09 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-21 18:09 Michael Niedermayer [this message]
2023-09-21 18:09 ` [FFmpeg-devel] [PATCH 2/6] avcodec/wavarc: Fix integer overflwo in do_stereo() Michael Niedermayer
2023-10-03 14:32 ` Michael Niedermayer
2023-09-21 18:09 ` [FFmpeg-devel] [PATCH 3/6] avcodec/wavarc: Allocate AV_INPUT_BUFFER_PADDING_SIZE Michael Niedermayer
2023-09-21 18:09 ` [FFmpeg-devel] [PATCH 4/6] avcodec/wavarc: Check k in decode_5elp() Michael Niedermayer
2023-09-21 18:09 ` [FFmpeg-devel] [PATCH 5/6] avcodec/jpegxl_parse: Cleanup on error in read_vlc_prefix() Michael Niedermayer
2023-09-21 18:09 ` [FFmpeg-devel] [PATCH 6/6] avformat/mov: Check avif_info Michael Niedermayer
2023-09-28 10:37 ` Anton Khirnov
2023-09-29 19:35 ` Michael Niedermayer
2023-09-21 18:14 ` [FFmpeg-devel] [PATCH 1/6] avcodec/osq: Check that pkt_offset does not exceed pkt size Paul B Mahol
2023-09-22 16:47 ` Michael Niedermayer
2023-09-22 17:36 ` Paul B Mahol
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20230921180912.10733-1-michael@niedermayer.cc \
--to=michael@niedermayer.cc \
--cc=ffmpeg-devel@ffmpeg.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Git Inbox Mirror of the ffmpeg-devel mailing list - see https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
This inbox may be cloned and mirrored by anyone:
git clone --mirror https://master.gitmailbox.com/ffmpegdev/0 ffmpegdev/git/0.git
# If you have public-inbox 1.1+ installed, you may
# initialize and index your mirror using the following commands:
public-inbox-init -V2 ffmpegdev ffmpegdev/ https://master.gitmailbox.com/ffmpegdev \
ffmpegdev@gitmailbox.com
public-inbox-index ffmpegdev
Example config snippet for mirrors.
AGPL code for this site: git clone https://public-inbox.org/public-inbox.git