Fixes: 15524/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_TRUEMOTION2_fuzzer-5173148372172800 Fixes: signed integer overflow: 13701388 - -2134868270 cannot be represented in type 'int'
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavcodec/truemotion2.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/libavcodec/truemotion2.c b/libavcodec/truemotion2.c index a86dd16e0f..5d6dfc24c3 100644 --- a/libavcodec/truemotion2.c +++ b/libavcodec/truemotion2.c @@ -764,10 +764,10 @@ static inline void tm2_motion_block(TM2Context *ctx, AVFrame *pic, int bx, int b } /* calculate deltas */ Y -= Ystride * 4; - ctx->D[0] = Y[3] - last[3]; - ctx->D[1] = Y[3 + Ystride] - Y[3]; - ctx->D[2] = Y[3 + Ystride * 2] - Y[3 + Ystride]; - ctx->D[3] = Y[3 + Ystride * 3] - Y[3 + Ystride * 2]; + ctx->D[0] = (unsigned)Y[3] - last[3]; + ctx->D[1] = (unsigned)Y[3 + Ystride] - Y[3]; + ctx->D[2] = (unsigned)Y[3 + Ystride * 2] - Y[3 + Ystride]; + ctx->D[3] = (unsigned)Y[3 + Ystride * 3] - Y[3 + Ystride * 2]; for (i = 0; i < 4; i++) last[i] = Y[i + Ystride * 3]; } -- 2.22.0 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
