[FFmpeg-devel] [PR] avcodec/imm5: Dont pass EAGAIM on as is (PR #21741)

[michaelni via ffmpeg-devel <ffmpeg-devel@ffmpeg.org>]

PR #21741 opened by michaelni
URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/21741
Patch URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/21741.patch

Fixes: Assertion consumed != (-(11)) failed at libavcodec/decode.c:465
Fixes: 471587358/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_IMM5_fuzzer-4737412376100864

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>


>From 62a1168393c19581cda65419ed41346afe6f00b5 Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michael@niedermayer.cc>
Date: Thu, 12 Feb 2026 23:54:42 +0100
Subject: [PATCH] avcodec/imm5: Dont pass EAGAIM on as is

Fixes: Assertion consumed != (-(11)) failed at libavcodec/decode.c:465
Fixes: 471587358/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_IMM5_fuzzer-4737412376100864

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
 libavcodec/imm5.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libavcodec/imm5.c b/libavcodec/imm5.c
index 7bb77b5e7a..b1cda453c9 100644
--- a/libavcodec/imm5.c
+++ b/libavcodec/imm5.c
@@ -136,6 +136,8 @@ static int imm5_decode_frame(AVCodecContext *avctx, AVFrame *frame,
     }
 
     ret = avcodec_receive_frame(codec_avctx, frame);
+    if (ret == AVERROR(EAGAIN))
+        return avpkt->size;
     if (ret < 0)
         return ret;
 
-- 
2.52.0

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