From 145a3a84550a1c3a3b848c12a64b53c3c41d2888 Mon Sep 17 00:00:00 2001
From: James Almer <jamrial@gmail.com>
Date: Mon, 30 Dec 2024 00:25:41 -0300
Subject: [PATCH] avfilter/buffersrc: check for valid sample rate

A sample rate <= 0 is invalid.

Fixes an assert in ffmpeg_enc.c that assumed a valid sample rate would be set.
Fixes ticket #11385.

Signed-off-by: James Almer <jamrial@gmail.com>
(cherry picked from commit 1446e37d3d032e1452844778b3e6ba2c20f0c322)

CVE: CVE-2025-22919

Upstream-Status: Backport [https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/145a3a84550a1c3a3b848c12a64b53c3c41d2888]

Signed-off-by: Archana Polampalli <archana.polampalli@windriver.com>
---
 libavfilter/buffersrc.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/libavfilter/buffersrc.c b/libavfilter/buffersrc.c
index b061187..cd2b05d 100644
--- a/libavfilter/buffersrc.c
+++ b/libavfilter/buffersrc.c
@@ -335,6 +335,11 @@ static av_cold int init_audio(AVFilterContext *ctx)
                                   "channel layout specified\n");
         return AVERROR(EINVAL);
     }
+    
+    if (s->sample_rate <= 0) {
+        av_log(ctx, AV_LOG_ERROR, "Sample rate not set\n");
+        return AVERROR(EINVAL);
+    }
 
     if (!s->time_base.num)
         s->time_base = (AVRational){1, s->sample_rate};
-- 
2.40.0

