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| author | Michael Niedermayer <michael@niedermayer.cc> | 2020-09-19 20:48:38 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-10-09 22:02:19 +0200 |
| commit | d23e7ce02a0474ac6025e2b30e9a898f8a66eaec (patch) | |
| tree | 28b18150c91836a041eb6c1d3ab3302d73e7bed9 | |
| parent | 9b01de9145694f8a8f906bfb16da3567c1be8174 (diff) | |
| download | ffmpeg-d23e7ce02a0474ac6025e2b30e9a898f8a66eaec.tar.gz | |
avcodec/ansi: Check nb_args for overflow
Fixes: Integer overflow (no testcase)
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit bc0e776c9aaf06f437bf21e05a713fd54dc85400)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/ansi.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/libavcodec/ansi.c b/libavcodec/ansi.c index 8032aebe5e..cc4c7d2d1e 100644 --- a/libavcodec/ansi.c +++ b/libavcodec/ansi.c @@ -430,7 +430,8 @@ static int decode_frame(AVCodecContext *avctx, s->args[s->nb_args] = FFMAX(s->args[s->nb_args], 0) * 10 + buf[0] - '0'; break; case ';': - s->nb_args++; + if (s->nb_args < MAX_NB_ARGS) + s->nb_args++; if (s->nb_args < MAX_NB_ARGS) s->args[s->nb_args] = 0; break; |