[PR] avcodec/mpeg4videodec: Copy studio_profile in frame-thread context update (PR #23581)

PR #23581 opened by michaelni
URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/23581
Patch URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/23581.patch

Fixes: out of array access
Fixes: poc.m4v / make_poc.py
Fixes: 93KU7grvT7G1
Fixes: f9d3841ae6 (mpeg4video: Add support for MPEG-4 Simple Studio Profile.)
Found-by: VulnForge Security Research Team <[email protected]>
Signed-off-by: Michael Niedermayer <[email protected]>



>From feaff39395e74f2a24d3b764cd8bfdeaf46df7c0 Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <[email protected]>
Date: Wed, 24 Jun 2026 03:43:32 +0200
Subject: [PATCH] avcodec/mpeg4videodec: Copy studio_profile in frame-thread
 context update

Fixes: out of array access
Fixes: poc.m4v / make_poc.py
Fixes: 93KU7grvT7G1
Fixes: f9d3841ae6 (mpeg4video: Add support for MPEG-4 Simple Studio Profile.)
Found-by: VulnForge Security Research Team <[email protected]>
Signed-off-by: Michael Niedermayer <[email protected]>
---
 libavcodec/mpeg4videodec.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libavcodec/mpeg4videodec.c b/libavcodec/mpeg4videodec.c
index 3d20f7c389..9cfb3cde2d 100644
--- a/libavcodec/mpeg4videodec.c
+++ b/libavcodec/mpeg4videodec.c
@@ -3923,6 +3923,7 @@ static int mpeg4_update_thread_context(AVCodecContext *dst,
     s->cplx_estimation_trash_p   = s1->cplx_estimation_trash_p;
     s->cplx_estimation_trash_b   = s1->cplx_estimation_trash_b;
     s->rgb                       = s1->rgb;
+    s->h.c.studio_profile        = s1->h.c.studio_profile;
 
     s->h.skipped_last_frame      = s1->h.skipped_last_frame;
     s->h.padding_bug_score       = s1->h.padding_bug_score; // FIXME: racy
-- 
2.52.0

_______________________________________________
ffmpeg-devel mailing list -- [email protected]
To unsubscribe send an email to [email protected]