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Code Issues Releases Activity

avfilter/vf_transpose: Fix used plane count.

Browse Source 
Fixes out of array access
Fixes: poc.mp4

Found-by: GwanYeong Kim <gy741.kim@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2018-01-24 19:38:05 +01:00
parent 23ffeb91fe
commit c6939f65a1
1 changed files with 7 additions and 1 deletions
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8
libavfilter/vf_transpose.c
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@ -27,6 +27,7 @@
#include <stdio.h>
#include "libavutil/avassert.h"
#include "libavutil/imgutils.h"
#include "libavutil/internal.h"
#include "libavutil/intreadwrite.h"
@ -54,6 +55,7 @@ enum TransposeDir {
typedef struct TransContext {
const AVClass *class;
int hsub, vsub;
int planes;
int pixsteps[4];
int passthrough; ///< PassthroughType, landscape passthrough mode enabled
@ -215,6 +217,10 @@ static int config_props_output(AVFilterLink *outlink)
s->hsub = desc_in->log2_chroma_w;
s->vsub = desc_in->log2_chroma_h;
s->planes = desc_in->nb_components;
av_assert0(desc_in->nb_components == desc_out->nb_components);
av_image_fill_max_pixsteps(s->pixsteps, NULL, desc_out);
@ -272,7 +278,7 @@ static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr,
AVFrame *in = td->in;
int plane;
for (plane = 0; out->data[plane]; plane++) {
for (plane = 0; plane < s->planes; plane++) {
int hsub = plane == 1 || plane == 2 ? s->hsub : 0;
int vsub = plane == 1 || plane == 2 ? s->vsub : 0;
int pixstep = s->pixsteps[plane];