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avfilter/af_afftfilt: fix possible invalid memory access

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This commit is contained in:
Paul B Mahol 2019-10-07 11:37:05 +02:00
parent 5b4010e886
commit 0c4137bcb7
1 changed files with 2 additions and 0 deletions
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2
libavfilter/af_afftfilt.c
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@ -188,6 +188,8 @@ static int config_input(AVFilterLink *inlink)
if (!args)
return AVERROR(ENOMEM);
saveptr = NULL;
last_expr = "1";
for (ch = 0; ch < inlink->channels; ch++) {
char *arg = av_strtok(ch == 0 ? args : NULL, "|", &saveptr);