From 2f7aaa33e7343435cbc468da42fbd52c9f8f7055 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Fri, 19 Jul 2024 22:22:33 +0200 Subject: [PATCH] avcodec/aac/aacdec_lpd: Check kv indec Fixes: index 9 out of bounds for type 'uint32_t [8][8]' Fixes: 70363/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_AAC_LATM_fuzzer-6723855293415424.fuzz Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/aac/aacdec_lpd.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/libavcodec/aac/aacdec_lpd.c b/libavcodec/aac/aacdec_lpd.c index 91a3268889..20bbb007ff 100644 --- a/libavcodec/aac/aacdec_lpd.c +++ b/libavcodec/aac/aacdec_lpd.c @@ -130,6 +130,9 @@ int ff_aac_parse_fac_data(AACUsacElemData *ce, GetBitContext *gb, if (use_gain) ce->fac.gain = get_bits(gb, 7); + if (len/8 > 8) + return AVERROR_PATCHWELCOME; + for (int i = 0; i < len/8; i++) { ret = parse_codebook_idx(gb, ce->fac.kv[i], 1, 1); if (ret < 0)