PR #23280 opened by michaelni
URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/23280
Patch URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/23280.patch

Failure to allocate a randomly sized buffer should not count as a anomaly in 
the fuzzer
there is nothing to fix in that case

Fixes: 
490112574/clusterfuzz-testcase-minimized-ffmpeg_dem_TMV_fuzzer-6600485921685504
Found-by: continuous fuzzing process 
https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <[email protected]>


>From c5818cc2c32c81599ca11a8313d0251666388958 Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <[email protected]>
Date: Sat, 30 May 2026 19:48:14 +0200
Subject: [PATCH] tools/target_dem_fuzzer: do not exit on io_buffer allocation
 failure

Failure to allocate a randomly sized buffer should not count as a anomaly in 
the fuzzer
there is nothing to fix in that case

Fixes: 
490112574/clusterfuzz-testcase-minimized-ffmpeg_dem_TMV_fuzzer-6600485921685504
Found-by: continuous fuzzing process 
https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <[email protected]>
---
 tools/target_dem_fuzzer.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/tools/target_dem_fuzzer.c b/tools/target_dem_fuzzer.c
index e169438ceb..aefec2ec03 100644
--- a/tools/target_dem_fuzzer.c
+++ b/tools/target_dem_fuzzer.c
@@ -182,8 +182,11 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t 
size) {
         error("Failed to allocate pkt");
 
     io_buffer = av_malloc(io_buffer_size);
-    if (!io_buffer)
-        error("Failed to allocate io_buffer");
+    if (!io_buffer) {
+        avformat_free_context(avfmt);
+        av_packet_free(&pkt);
+        return 0;
+    }
 
     opaque.filesize = filesize;
     opaque.pos      = 0;
-- 
2.52.0

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