Message ID | 20210610135811.21320-2-michael@niedermayer.cc |
---|---|
State | Accepted |
Commit | 7d8421e3d5bc1300687a65384baccbcb3874b7ac |
Headers | show |
Series | [FFmpeg-devel,1/3] avformat/utils: Avoid overflow in codec_info_duration computation for subtitles | expand |
Context | Check | Description |
---|---|---|
andriy/x86_make | success | Make finished |
andriy/x86_make_fate | success | Make fate finished |
andriy/PPC64_make | success | Make finished |
andriy/PPC64_make_fate | success | Make fate finished |
diff --git a/libavcodec/faxcompr.c b/libavcodec/faxcompr.c index d44de2485d..45e0c482d7 100644 --- a/libavcodec/faxcompr.c +++ b/libavcodec/faxcompr.c @@ -304,7 +304,10 @@ static int decode_group3_2d_line(AVCodecContext *avctx, GetBitContext *gb, mode = !mode; } } else if (cmode == 9 || cmode == 10) { - int xxx = get_bits(gb, 3); + int xxx; + if (get_bits_left(gb) < 3) + return AVERROR_INVALIDDATA; + xxx = get_bits(gb, 3); if (cmode == 9 && xxx == 7) { int ret; int pix_left = width - offs;
Fixes: Timeout Fixes: 34950/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_TIFF_fuzzer-5686764151898112 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc> --- libavcodec/faxcompr.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)