Commit dbe7ccee05 for ffmpeg

commit dbe7ccee05828da41c5eda9ca874a6a514534ea6
Author: Michael Niedermayer <michael@niedermayer.cc>
Date:   Sun Oct 11 07:19:21 2026 +0200

    avcodec/aac/aacdec_usac: release the extension payload buffers before clearing the configuration

    The buffers of fragmented extension payloads were lost when a new
    configuration was parsed.

    Fixes: memleak
    Fixes: yxoDgZkJaJ4D
    Regression since: eee5fa0808
    Found during the review of https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/24677
    Memleak Replicated through UnModified FFmpeg with ASAN

diff --git a/libavcodec/aac/aacdec_usac.c b/libavcodec/aac/aacdec_usac.c
index 3587c76c07..5c6d04226d 100644
--- a/libavcodec/aac/aacdec_usac.c
+++ b/libavcodec/aac/aacdec_usac.c
@@ -571,6 +571,8 @@ int ff_aac_usac_config_decode(AACDecContext *ac, AVCodecContext *avctx,
     if (!ac)
         return AVERROR_PATCHWELCOME;

+    for (int i = 0; i < usac->nb_elems; i++)
+        av_refstruct_unref(&usac->elems[i].ext.pl_buf);
     memset(usac, 0, sizeof(*usac));
     usac->loudness.input_method_val = -1;