PR #23732 opened by michaelni URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/23732 Patch URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/23732.patch
Fixes: assertion failure Fixes: 523522308/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_TIFF_DEC_fuzzer-4771843818192896 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <[email protected]> >From 0d60d64d6b3690162a638bdf8556c209706ff9b1 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer <[email protected]> Date: Sun, 5 Jul 2026 01:43:49 +0200 Subject: [PATCH] avcodec/mjpegdec: reject flipping of bayer images Fixes: assertion failure Fixes: 523522308/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_TIFF_DEC_fuzzer-4771843818192896 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <[email protected]> --- libavcodec/mjpegdec.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/libavcodec/mjpegdec.c b/libavcodec/mjpegdec.c index 0853d76372..23242abbb9 100644 --- a/libavcodec/mjpegdec.c +++ b/libavcodec/mjpegdec.c @@ -2167,9 +2167,10 @@ static int mjpeg_decode_com(MJpegDecodeContext *s) } else if (!strcmp(cbuf, "CS=ITU601")) s->cs_itu601 = 1; else if ((!strncmp(cbuf, "Intel(R) JPEG Library, version 1", 32) && s->avctx->codec_tag) || - (!strncmp(cbuf, "Metasoft MJPEG Codec", 20))) - s->flipped = 1; - else if (!strcmp(cbuf, "MULTISCOPE II")) { + (!strncmp(cbuf, "Metasoft MJPEG Codec", 20))) { + if (!s->bayer) + s->flipped = 1; + } else if (!strcmp(cbuf, "MULTISCOPE II")) { s->avctx->sample_aspect_ratio = (AVRational) { 1, 2 }; s->multiscope = 2; } -- 2.52.0 _______________________________________________ ffmpeg-devel mailing list -- [email protected] To unsubscribe send an email to [email protected]
