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filmstripdec: correctly check image dimensions

This prevents a division by zero in read_packet.

Andreas Cadhalpun committed 10 years ago

Commit 25012c51 parent 03cef341 file · +3 −4Browse files

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libavformat/filmstripdec.c+3−4
@@ -25,6 +25,7 @@ · 24 unmodified lines
25 */25 */
26 26
27#include "libavutil/intreadwrite.h"27#include "libavutil/intreadwrite.h"
28#include "libavutil/imgutils.h"
28#include "avformat.h"29#include "avformat.h"
29#include "internal.h"30#include "internal.h"
30 31
@@ -68,10 +69,8 @@ static int read_header(AVFormatContext *s) · 37 unmodified lines
68 st->codecpar->height = avio_rb16(pb);69 st->codecpar->height = avio_rb16(pb);
69 film->leading = avio_rb16(pb);70 film->leading = avio_rb16(pb);
70 71
71 if (st->codecpar->width * 4LL * st->codecpar->height >= INT_MAX) {72 if (av_image_check_size(st->codecpar->width, st->codecpar->height, 0, s) < 0)
72 av_log(s, AV_LOG_ERROR, "dimensions too large\n");73 return AVERROR_INVALIDDATA;
73 return AVERROR_PATCHWELCOME;
74 }
75 74
76 avpriv_set_pts_info(st, 64, 1, avio_rb16(pb));75 avpriv_set_pts_info(st, 64, 1, avio_rb16(pb));
77 76

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