diff options
Diffstat (limited to 'libavformat/sierravmd.c')
| -rw-r--r-- | libavformat/sierravmd.c | 23 |
1 files changed, 16 insertions, 7 deletions
diff --git a/libavformat/sierravmd.c b/libavformat/sierravmd.c index 059945dc0f..9366a8f5dc 100644 --- a/libavformat/sierravmd.c +++ b/libavformat/sierravmd.c @@ -91,7 +91,8 @@ static int vmd_read_header(AVFormatContext *s) unsigned char *raw_frame_table; int raw_frame_table_size; int64_t current_offset; - int i, j, width, height; + int i, j, ret; + int width, height; unsigned int total_frames; int64_t current_audio_pts = 0; unsigned char chunk[BYTES_PER_FRAME_RECORD]; @@ -186,15 +187,13 @@ static int vmd_read_header(AVFormatContext *s) raw_frame_table = av_malloc(raw_frame_table_size); vmd->frame_table = av_malloc((vmd->frame_count * vmd->frames_per_block + sound_buffers) * sizeof(vmd_frame)); if (!raw_frame_table || !vmd->frame_table) { - av_free(raw_frame_table); - av_free(vmd->frame_table); - return AVERROR(ENOMEM); + ret = AVERROR(ENOMEM); + goto error; } if (avio_read(pb, raw_frame_table, raw_frame_table_size) != raw_frame_table_size) { - av_free(raw_frame_table); - av_free(vmd->frame_table); - return AVERROR(EIO); + ret = AVERROR(EIO); + goto error; } total_frames = 0; @@ -210,6 +209,11 @@ static int vmd_read_header(AVFormatContext *s) avio_read(pb, chunk, BYTES_PER_FRAME_RECORD); type = chunk[0]; size = AV_RL32(&chunk[2]); + if (size > INT_MAX / 2) { + av_log(s, AV_LOG_ERROR, "Invalid frame size\n"); + ret = AVERROR_INVALIDDATA; + goto error; + } if(!size && type != 1) continue; switch(type) { @@ -246,6 +250,11 @@ static int vmd_read_header(AVFormatContext *s) vmd->frame_count = total_frames; return 0; + +error: + av_free(raw_frame_table); + av_free(vmd->frame_table); + return ret; } static int vmd_read_packet(AVFormatContext *s, |