ff_aac_usac_config_decode() needs AACDecContext to be set but some callers pass NULL.
I have no real testcase to implement/test this, so failing in this case seems safest. Fixes: member access within null pointer of type 'AACDecContext' (aka 'struct AACDecContext') Fixes: 69435/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_AAC_LATM_fuzzer-5733527483121664 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavcodec/aac/aacdec_usac.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/libavcodec/aac/aacdec_usac.c b/libavcodec/aac/aacdec_usac.c index 132ffee9c20..4856c1786b7 100644 --- a/libavcodec/aac/aacdec_usac.c +++ b/libavcodec/aac/aacdec_usac.c @@ -348,6 +348,9 @@ int ff_aac_usac_config_decode(AACDecContext *ac, AVCodecContext *avctx, int map_pos_set = 0; uint8_t layout_map[MAX_ELEM_ID*4][3] = { 0 }; + if (!ac) + return AVERROR_PATCHWELCOME; + memset(usac, 0, sizeof(*usac)); freq_idx = get_bits(gb, 5); /* usacSamplingFrequencyIndex */ -- 2.45.2 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
