ffmpeg | branch: master | Michael Niedermayer <mich...@niedermayer.cc> | Wed Jun 9 21:25:58 2021 +0200| [ff56c139e07a4de2803b974b6595f6b71fbf53bd] | committer: Michael Niedermayer
avcodec/faxcompr: Check available bits in decode_uncompressed() Fixes: Timeout Fixes: 34950/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_TIFF_fuzzer-5686764151898112 Fixes: 34966/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_TIFF_fuzzer-4587409334468608 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=ff56c139e07a4de2803b974b6595f6b71fbf53bd --- libavcodec/faxcompr.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/libavcodec/faxcompr.c b/libavcodec/faxcompr.c index 45e0c482d7..44c1f6f6b9 100644 --- a/libavcodec/faxcompr.c +++ b/libavcodec/faxcompr.c @@ -144,6 +144,8 @@ static int decode_uncompressed(AVCodecContext *avctx, GetBitContext *gb, return AVERROR_INVALIDDATA; } cwi = 10 - av_log2(cwi); + if (get_bits_left(gb) < cwi + 1) + return AVERROR_INVALIDDATA; skip_bits(gb, cwi + 1); if (cwi > 5) { newmode = get_bits1(gb); _______________________________________________ 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".
