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avcodec/htmlsubtitles: Fix reading one byte beyond the array

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Fixes: fuzz-2-ffmpeg_SUBTITLE_AV_CODEC_ID_SUBRIP_fuzzer

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2016-11-11 02:25:42 +01:00
parent cdb5479c9d
commit 04bd1b38ee
1 changed files with 1 additions and 1 deletions
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2
libavcodec/htmlsubtitles.c
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@ -146,7 +146,7 @@ void ff_htmlmarkup_to_ass(void *log_ctx, AVBPrint *dst, const char *in)
if (stack[sptr].param[i][0])
av_bprintf(dst, "%s", stack[sptr].param[i]);
}
} else if (!tagname[1] && strspn(tagname, "bisu") == 1) {
} else if (tagname[0] && !tagname[1] && strspn(tagname, "bisu") == 1) {
av_bprintf(dst, "{\\%c%d}", tagname[0], !tag_close);
} else {
unknown = 1;