ffmpeg | branch: master | Michael Niedermayer <[email protected]> | Sun Nov 22 00:31:47 2020 +0100| [a5ed6da9bdbe32408aabe1c75e4b55fcaeec1e9b] | committer: Michael Niedermayer
avcodec/rscc: Check inflated_buf size whan it is used Fixes: out of array access Fixes: 27434/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_RSCC_fuzzer-5196757675540480 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=a5ed6da9bdbe32408aabe1c75e4b55fcaeec1e9b --- libavcodec/rscc.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/libavcodec/rscc.c b/libavcodec/rscc.c index bd0520950f..07a7c3dca3 100644 --- a/libavcodec/rscc.c +++ b/libavcodec/rscc.c @@ -300,6 +300,10 @@ static int rscc_decode_frame(AVCodecContext *avctx, void *data, ret = AVERROR_INVALIDDATA; goto end; } + if (ctx->inflated_size < pixel_size) { + ret = AVERROR_INVALIDDATA; + goto end; + } ret = uncompress(ctx->inflated_buf, &len, gbc->buffer, packed_size); if (ret) { av_log(avctx, AV_LOG_ERROR, "Pixel deflate error %d.\n", ret); _______________________________________________ ffmpeg-cvslog mailing list [email protected] https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
