Commit 781f30e44f for ffmpeg

commit 781f30e44f7bf36becc4182d7dba45f044344cd1
Author: Michael Niedermayer <michael@niedermayer.cc>
Date:   Wed Oct 7 00:07:48 2026 +0200

    avformat/nutenc: Do not write IAMF parameter side data

    Fixes: address disclosure
    Fixes: bH0O2TMvkU1D
    Address disclosure Replicated through UnModified FFmpeg
    Found during triage of the security report AISLE-2026-0111-00173

diff --git a/libavformat/nutenc.c b/libavformat/nutenc.c
index a7173b65f9..a204141df4 100644
--- a/libavformat/nutenc.c
+++ b/libavformat/nutenc.c
@@ -950,6 +950,10 @@ static int write_sm_data(AVFormatContext *s, AVIOContext *bc, AVPacket *pkt, int
             case AV_PKT_DATA_QUALITY_STATS:
                 // belongs into meta, not side data
                 break;
+            case AV_PKT_DATA_IAMF_MIX_GAIN_PARAM:
+            case AV_PKT_DATA_IAMF_DEMIXING_INFO_PARAM:
+            case AV_PKT_DATA_IAMF_RECON_GAIN_INFO_PARAM:
+                break;
             }
         }
     }