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Code Issues Releases Activity

avcodec/ansi: fix integer overflow

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Fixes out of array read
Fixes: 5f9698e86d92f19bb08d54ff0d57027f-signal_sigsegv_b30756_3795_cov_2693691257_ansi256.ans
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-02-17 20:49:42 +01:00
parent 911eb71133
commit d42ec8433c
1 changed files with 1 additions and 1 deletions
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2
libavcodec/ansi.c
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@ -420,7 +420,7 @@ static int decode_frame(AVCodecContext *avctx,
switch(buf[0]) { switch(buf[0]) {
case '0': case '1': case '2': case '3': case '4': case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9': case '5': case '6': case '7': case '8': case '9':
if (s->nb_args < MAX_NB_ARGS) if (s->nb_args < MAX_NB_ARGS && s->args[s->nb_args] < 6553)
s->args[s->nb_args] = FFMAX(s->args[s->nb_args], 0) * 10 + buf[0] - '0'; s->args[s->nb_args] = FFMAX(s->args[s->nb_args], 0) * 10 + buf[0] - '0';
break; break;
case ';': case ';':