ffmpeg | branch: master | Michael Niedermayer <[email protected]> | Thu Jun 27 00:29:06 2019 +0200| [8c7d5fcfc32d65951039ab2bb78947a41bdd96c4] | committer: Michael Niedermayer
avcodec/dxv: Check op_offset in both directions Fixes: signed integer overflow: 61 + 2147483647 cannot be represented in type 'int' Fixes: 15311/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_DXV_fuzzer-5742552826773504 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <[email protected]> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=8c7d5fcfc32d65951039ab2bb78947a41bdd96c4 --- libavcodec/dxv.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/dxv.c b/libavcodec/dxv.c index ae79de981f..8d5e4b1c6c 100644 --- a/libavcodec/dxv.c +++ b/libavcodec/dxv.c @@ -745,7 +745,7 @@ 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) + if (op_offset < 12 || op_offset - 12 > bytestream2_get_bytes_left(gb)) return AVERROR_INVALIDDATA; dst = tex_data; _______________________________________________ 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".
