[FFmpeg-cvslog] avcodec/aac/aacdec_usac: Dont leave type at a invalid value

[Michael Niedermayer]

ffmpeg | branch: release/7.1 | Michael Niedermayer <michael at niedermayer.cc> | Wed Jul 31 20:03:12 2024 +0200| [b44488042243671ad62b69daa6633fa4b0e305c0] | committer: Michael Niedermayer

avcodec/aac/aacdec_usac: Dont leave type at a invalid value

Fixes: Assertion 0 failed at libavcodec/aac/aacdec_usac.c:1646
Fixes: 70541/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_AAC_LATM_fuzzer-5190889543106560

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Lynne <dev at lynne.ee>
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
(cherry picked from commit a518b5540de469ac5d4f96e820462e5ce519c2db)
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=b44488042243671ad62b69daa6633fa4b0e305c0
---

 libavcodec/aac/aacdec_usac.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libavcodec/aac/aacdec_usac.c b/libavcodec/aac/aacdec_usac.c
index 5efa248238..2938e69387 100644
--- a/libavcodec/aac/aacdec_usac.c
+++ b/libavcodec/aac/aacdec_usac.c
@@ -265,6 +265,7 @@ static int decode_usac_extension(AACDecContext *ac, AACUsacElemConfig *e,
         /* No configuration needed - fallthrough (len should be 0) */
     default:
         skip_bits(gb, 8*ext_config_len);
+        e->ext.type = ID_EXT_ELE_FILL;
         break;
     };