Fixes: signed integer overflow: 1073750247 * 2 cannot be represented in type 'int' Fixes: 70722/clusterfuzz-testcase-minimized-ffmpeg_dem_ASF_O_fuzzer-5447231587549184
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavformat/asf.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/libavformat/asf.c b/libavformat/asf.c index a71337aa3c9..5c118d2dbe0 100644 --- a/libavformat/asf.c +++ b/libavformat/asf.c @@ -90,8 +90,8 @@ static int asf_read_picture(AVFormatContext *s, int len) return 0; } - if (picsize >= len) { - av_log(s, AV_LOG_ERROR, "Invalid attached picture data size: %d >= %d.\n", + if (picsize >= len || ((int64_t)len - picsize) * 2 + 1 > INT_MAX) { + av_log(s, AV_LOG_ERROR, "Invalid attached picture data size: %d (len = %d).\n", picsize, len); return AVERROR_INVALIDDATA; } -- 2.46.1 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
