ffmpeg | branch: release/2.8 | Michael Niedermayer <mich...@niedermayer.cc> | Sun Apr 19 18:24:55 2020 +0200| [a1c51c0713c11769bc64110e337a397b71df4f40] | committer: Michael Niedermayer
avcodec/hevc_mp4toannexb_bsf: Check nalu_size Fixes: Timeout (29sec -> 5ms) Fixes: 20237/clusterfuzz-testcase-minimized-ffmpeg_BSF_HEVC_MP4TOANNEXB_fuzzer-5165615044362240 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> (cherry picked from commit ae2537f53e8ebfa36345241b5b70c0b1aef66dd2) Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=a1c51c0713c11769bc64110e337a397b71df4f40 --- libavcodec/hevc_mp4toannexb_bsf.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/libavcodec/hevc_mp4toannexb_bsf.c b/libavcodec/hevc_mp4toannexb_bsf.c index 93fc5ed650..bcf845d688 100644 --- a/libavcodec/hevc_mp4toannexb_bsf.c +++ b/libavcodec/hevc_mp4toannexb_bsf.c @@ -161,6 +161,11 @@ static int hevc_mp4toannexb_filter(AVBitStreamFilterContext *bsfc, for (i = 0; i < ctx->length_size; i++) nalu_size = (nalu_size << 8) | bytestream2_get_byte(&gb); + if (nalu_size < 2) { + ret = AVERROR_INVALIDDATA; + goto fail; + } + nalu_type = (bytestream2_peek_byte(&gb) >> 1) & 0x3f; /* prepend extradata to IRAP frames */ _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email ffmpeg-cvslog-requ...@ffmpeg.org with subject "unsubscribe".
