ffmpeg | branch: release/4.1 | Michael Niedermayer <mich...@niedermayer.cc> | Tue May 21 01:33:03 2019 +0200| [43afeaa08652543fd44f993001b2be01aca122a6] | committer: Michael Niedermayer
avcodec/dxv: Check op_offset in dxv_decompress_cocg() Fixes: signed integer overflow: -2147483648 - 12 cannot be represented in type 'int' Fixes: 14732/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_DXV_fuzzer-5735273129836544 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 8e520843dd76a644c019134ac7b17eba9f1118b3) Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=43afeaa08652543fd44f993001b2be01aca122a6 --- libavcodec/dxv.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/libavcodec/dxv.c b/libavcodec/dxv.c index aef5ec19dd..7ae3315493 100644 --- a/libavcodec/dxv.c +++ b/libavcodec/dxv.c @@ -743,6 +743,9 @@ static int dxv_decompress_cocg(DXVContext *ctx, GetByteContext *gb, int skip0, skip1, oi0 = 0, oi1 = 0; int ret, state0 = 0, state1 = 0; + if (op_offset < 12) + return AVERROR_INVALIDDATA; + dst = tex_data; bytestream2_skip(gb, op_offset - 12); if (op_size0 > max_op_size0) _______________________________________________ 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".
