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various security fixes and precautionary checks

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Originally committed as revision 3822 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer
2005-01-12 00:16:25 +00:00
parent f14d4e7e21
commit 0ecca7a49f
36 changed files with 314 additions and 89 deletions
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libavcodec/imgresample.c
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@@ -561,6 +561,8 @@ ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
s = av_mallocz(sizeof(ImgReSampleContext));
if (!s)
return NULL;
if((unsigned)owidth >= UINT_MAX / (LINE_BUF_HEIGHT + NB_TAPS))
return NULL;
s->line_buf = av_mallocz(owidth * (LINE_BUF_HEIGHT + NB_TAPS));
if (!s->line_buf)
goto fail;