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Code Issues Releases Activity

shorten: pad the internal bitstream buffer

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Fixes invalid reads.

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC:libav-stable@libav.org
This commit is contained in:
Anton Khirnov 2013-11-28 10:54:35 +01:00
parent 5430839144
commit 1713eec29a
1 changed files with 1 additions and 1 deletions
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libavcodec/shorten.c
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@ -431,7 +431,7 @@ static int shorten_decode_frame(AVCodecContext *avctx, void *data,
void *tmp_ptr; void *tmp_ptr;
s->max_framesize = 1024; // should hopefully be enough for the first header s->max_framesize = 1024; // should hopefully be enough for the first header
tmp_ptr = av_fast_realloc(s->bitstream, &s->allocated_bitstream_size, tmp_ptr = av_fast_realloc(s->bitstream, &s->allocated_bitstream_size,
s->max_framesize); s->max_framesize + FF_INPUT_BUFFER_PADDING_SIZE);
if (!tmp_ptr) { if (!tmp_ptr) {
av_log(avctx, AV_LOG_ERROR, "error allocating bitstream buffer\n"); av_log(avctx, AV_LOG_ERROR, "error allocating bitstream buffer\n");
return AVERROR(ENOMEM); return AVERROR(ENOMEM);