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| author | Michael Niedermayer <michael@niedermayer.cc> | 2018-03-10 01:40:36 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2018-03-10 02:44:45 +0100 |
| commit | a6cba062051f345e8ebfdff34aba071ed73d923f (patch) | |
| tree | 01e84ff4736a9acfbad7604cb9cd69c1bcf7d1ad /libavformat/img2dec.c | |
| parent | f655ddfb47e8484b205b14c7f871c643ad24d701 (diff) | |
| download | ffmpeg-a6cba062051f345e8ebfdff34aba071ed73d923f.tar.gz | |
avformat/img2dec: fix infinite loop
Fixes: kira-poc
Found-by: Kira <kira_cxy@foxmail.com>
Change suggested by Kira
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavformat/img2dec.c')
| -rw-r--r-- | libavformat/img2dec.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/libavformat/img2dec.c b/libavformat/img2dec.c index 62db0d92cf..f3f52c83b3 100644 --- a/libavformat/img2dec.c +++ b/libavformat/img2dec.c @@ -878,10 +878,14 @@ static int svg_probe(AVProbeData *p) { const uint8_t *b = p->buf; const uint8_t *end = p->buf + p->buf_size; + if (memcmp(p->buf, "<?xml", 5)) return 0; while (b < end) { - b += ff_subtitles_next_line(b); + int inc = ff_subtitles_next_line(b); + if (!inc) + break; + b += inc; if (b >= end - 4) return 0; if (!memcmp(b, "<svg", 4)) |