From: Limin Wang <[email protected]>
Signed-off-by: Limin Wang <[email protected]>
---
libavfilter/af_acrossover.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/libavfilter/af_acrossover.c b/libavfilter/af_acrossover.c
index f70c50b..91f77cc 100644
--- a/libavfilter/af_acrossover.c
+++ b/libavfilter/af_acrossover.c
@@ -99,7 +99,10 @@ static av_cold int init(AVFilterContext *ctx)
p = NULL;
- av_sscanf(arg, "%f", &freq);
+ if (av_sscanf(arg, "%f", &freq) != 1) {
+ av_log(ctx, AV_LOG_ERROR, "Invalid syntax.\n");
+ return AVERROR(EINVAL);
+ }
if (freq <= 0) {
av_log(ctx, AV_LOG_ERROR, "Frequency %f must be positive
number.\n", freq);
return AVERROR(EINVAL);
--
2.9.5
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