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| author | Michael Niedermayer <michael@niedermayer.cc> | 2016-01-21 15:39:43 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2016-01-21 15:56:11 +0100 |
| commit | b65efbc0f4195421c15d2a6c228d331eec5b31c3 (patch) | |
| tree | 415c397690cb703e04f95be2ddc2709259984b71 | |
| parent | 8248b51e0b94f0151b6a2057ee639d6e0db29f5f (diff) | |
| download | ffmpeg-b65efbc0f4195421c15d2a6c228d331eec5b31c3.tar.gz | |
avcodec/mpegvideo_enc: Check for integer overflow in ff_mpv_reallocate_putbitbuffer()
Fixes assertion failure
Fixes: 6568d187979ce17878b6fe5fbbb89142/signal_sigabrt_7ffff6ae7cb7_7176_564bbc6741bdcf907f5c4e685c9a77a2.mpg
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/mpegvideo_enc.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/libavcodec/mpegvideo_enc.c b/libavcodec/mpegvideo_enc.c index 55550d555f..af5b85fee3 100644 --- a/libavcodec/mpegvideo_enc.c +++ b/libavcodec/mpegvideo_enc.c @@ -2845,6 +2845,11 @@ int ff_mpv_reallocate_putbitbuffer(MpegEncContext *s, size_t threshold, size_t s uint8_t *new_buffer = NULL; int new_buffer_size = 0; + if ((s->avctx->internal->byte_buffer_size + size_increase) >= INT_MAX/8) { + av_log(s->avctx, AV_LOG_ERROR, "Cannot reallocate putbit buffer\n"); + return AVERROR(ENOMEM); + } + av_fast_padded_malloc(&new_buffer, &new_buffer_size, s->avctx->internal->byte_buffer_size + size_increase); if (!new_buffer) |