From b5b6391d64807578ab872dc58fb8aa621dcfc38a Mon Sep 17 00:00:00 2001

From: Michael Niedermayer <michael@niedermayer.cc>

Date: Mon, 6 Jan 2025 22:01:39 +0100

Subject: [PATCH] avfilter/af_pan: Fix sscanf() use

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Fixes: Memory Data Leak

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Found-by: Simcha Kosman <simcha.kosman@cyberark.com>

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

---

 libavfilter/af_pan.c | 2 +-

 1 file changed, 1 insertion(+), 1 deletion(-)

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diff --git a/libavfilter/af_pan.c b/libavfilter/af_pan.c

index 0d20b0307b..5feb2439c7 100644

--- a/libavfilter/af_pan.c

+++ b/libavfilter/af_pan.c

@@ -196,7 +196,7 @@ static av_cold int init(AVFilterContext *ctx)

         sign = 1;

         while (1) {

             gain = 1;

-            if (sscanf(arg, "%lf%n *%n", &gain, &len, &len))

+            if (sscanf(arg, "%lf%n *%n", &gain, &len, &len) >= 1)

                 arg += len;

             if (parse_channel_name(&arg, &in_ch_id, &named)){

                 av_log(ctx, AV_LOG_ERROR,

-- 

2.44.0

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