Fixes: signed integer overflow: 88 * 33685506 cannot be represented in type 'int' Fixes: 9433/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_DIRAC_fuzzer-5725943535501312
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavcodec/diracdec.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/libavcodec/diracdec.c b/libavcodec/diracdec.c index 4ef1b3ea9b..b27c743c58 100644 --- a/libavcodec/diracdec.c +++ b/libavcodec/diracdec.c @@ -1243,7 +1243,10 @@ static int dirac_unpack_idwt_params(DiracContext *s) else { s->num_x = get_interleaved_ue_golomb(gb); s->num_y = get_interleaved_ue_golomb(gb); - if (s->num_x * s->num_y == 0 || s->num_x * (uint64_t)s->num_y > INT_MAX) { + if (s->num_x * s->num_y == 0 || s->num_x * (uint64_t)s->num_y > INT_MAX || + s->num_x * (uint64_t)s->avctx->width > INT_MAX || + s->num_y * (uint64_t)s->avctx->height > INT_MAX + ) { av_log(s->avctx,AV_LOG_ERROR,"Invalid numx/y\n"); s->num_x = s->num_y = 0; return AVERROR_INVALIDDATA; -- 2.18.0 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
