From ab28d57ba2ec07b41b4a60ed8806b13a39ec86fe Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michael@niedermayer.cc>
Date: Tue, 20 Oct 2026 03:04:00 +0200
Subject: [PATCH] avcodec/dovi_rpuenc: do not divide by a zero frame rate
 denominator

Fixes: TPu5aVjgBh7t/testcase/crafted.hevc
Fixes: TPu5aVjgBh7t
Fixes: AISLE-2026-0150-00819
Fixes: division by zero
Division by zero Replicated through UnModified FFmpeg with UBSAN

Found-by: Joshua Rogers (AISLE)

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
 libavcodec/dovi_rpuenc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/dovi_rpuenc.c b/libavcodec/dovi_rpuenc.c
index 177e99467e..bdda95f991 100644
--- a/libavcodec/dovi_rpuenc.c
+++ b/libavcodec/dovi_rpuenc.c
@@ -183,7 +183,7 @@ static av_cold int dovi_configure_ext(DOVIContext *s, enum AVCodecID codec_id,
     }
 
     pps = width * height;
-    if (framerate.num) {
+    if (framerate.num > 0 && framerate.den > 0) {
         pps = pps * framerate.num / framerate.den;
     } else {
         pps *= 25; /* sanity fallback */