[FFmpeg-devel] [PATCH 1/6] avcodec/aac/aacdec: Clear SFO on error

Michael Niedermayer michael at niedermayer.cc
Sun Feb 9 04:24:16 EET 2025


types and SFO become confused for a USAC stream

Fixes: out of array access
Fixes: 383854203/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_AAC_LATM_fuzzer-4996677847547904.fuzz

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

diff --git a/libavcodec/aac/aacdec.c b/libavcodec/aac/aacdec.c
index c0850853b45..8d50ad6d095 100644
--- a/libavcodec/aac/aacdec.c
+++ b/libavcodec/aac/aacdec.c
@@ -1747,6 +1747,7 @@ int ff_aac_decode_ics(AACDecContext *ac, SingleChannelElement *sce,
 
     return 0;
 fail:
+    memset(sce->sfo, 0, sizeof(sce->sfo));
     tns->present = 0;
     return ret;
 }
-- 
2.48.1



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