Fixes: signed integer overflow: 262140 * 65535 cannot be represented in type 'int' Fixes: 10090/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_WCMV_fuzzer-5691269368512512
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavcodec/wcmv.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/libavcodec/wcmv.c b/libavcodec/wcmv.c index 384ceecd32..ebd5ef66f4 100644 --- a/libavcodec/wcmv.c +++ b/libavcodec/wcmv.c @@ -113,6 +113,8 @@ static int decode_frame(AVCodecContext *avctx, bytestream2_skip(&bgb, 4); w = bytestream2_get_le16(&bgb); h = bytestream2_get_le16(&bgb); + if (x + bpp * (int64_t)w * h > INT_MAX) + return AVERROR_INVALIDDATA; x += bpp * w * h; } @@ -140,6 +142,8 @@ static int decode_frame(AVCodecContext *avctx, bytestream2_skip(&gb, 4); w = bytestream2_get_le16(&gb); h = bytestream2_get_le16(&gb); + if (x + bpp * (int64_t)w * h > INT_MAX) + return AVERROR_INVALIDDATA; x += bpp * w * h; } -- 2.19.0 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
