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indeo: Sanitize ff_ivi_init_planes fail paths

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Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
This commit is contained in:
Luca Barbato 2013-07-14 15:48:17 +02:00
parent b0eeb9d442
commit 28dda8a691
3 changed files with 8 additions and 2 deletions
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1
libavcodec/indeo4.c
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@ -209,6 +209,7 @@ static int decode_pic_hdr(IVI45DecContext *ctx, AVCodecContext *avctx)
if (ivi_pic_config_cmp(&pic_conf, &ctx->pic_conf)) {
if (ff_ivi_init_planes(ctx->planes, &pic_conf)) {
av_log(avctx, AV_LOG_ERROR, "Couldn't reallocate color planes!\n");
ctx->pic_conf.luma_bands = 0;
return AVERROR(ENOMEM);
}

4
libavcodec/indeo5.c
View File

@ -113,7 +113,7 @@ static int decode_gop_header(IVI45DecContext *ctx, AVCodecContext *avctx)
}
/* check if picture layout was changed and reallocate buffers */
if (ivi_pic_config_cmp(&pic_conf, &ctx->pic_conf)) {
if (ivi_pic_config_cmp(&pic_conf, &ctx->pic_conf) || ctx->gop_invalid) {
result = ff_ivi_init_planes(ctx->planes, &pic_conf);
if (result < 0) {
av_log(avctx, AV_LOG_ERROR, "Couldn't reallocate color planes!\n");
@ -314,9 +314,9 @@ static int decode_pic_hdr(IVI45DecContext *ctx, AVCodecContext *avctx)
ctx->frame_num = get_bits(&ctx->gb, 8);
if (ctx->frame_type == FRAMETYPE_INTRA) {
ctx->gop_invalid = 1;
if ((ret = decode_gop_header(ctx, avctx)) < 0) {
av_log(avctx, AV_LOG_ERROR, "Invalid GOP header, skipping frames.\n");
ctx->gop_invalid = 1;
return ret;
}
ctx->gop_invalid = 0;

5
libavcodec/ivi_common.c
View File

@ -244,6 +244,7 @@ static av_cold void ivi_free_buffers(IVIPlaneDesc *planes)
av_freep(&planes[p].bands[b].tiles);
}
av_freep(&planes[p].bands);
planes[p].num_bands = 0;
}
}
@ -256,6 +257,10 @@ av_cold int ff_ivi_init_planes(IVIPlaneDesc *planes, const IVIPicConfig *cfg)
ivi_free_buffers(planes);
if (cfg->pic_width < 1 || cfg->pic_height < 1 ||
cfg->luma_bands < 1 || cfg->chroma_bands < 1)
return AVERROR_INVALIDDATA;
/* fill in the descriptor of the luminance plane */
planes[0].width = cfg->pic_width;
planes[0].height = cfg->pic_height;