diff mbox series

[FFmpeg-devel,04/11] avcodec/aac/aacdec_usac: Dont leave invalid max_sfb in the context

Message ID 20240720005241.726089-4-michael@niedermayer.cc
State New
Headers show
Series [FFmpeg-devel,01/11] avcodec/alsdec: Clear shift_value | expand

Commit Message

Michael Niedermayer July 20, 2024, 12:52 a.m. UTC 
Fixes: out of array read
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 <michael@niedermayer.cc>
---
 libavcodec/aac/aacdec_usac.c | 1 +
 1 file changed, 1 insertion(+)
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Patch

diff --git a/libavcodec/aac/aacdec_usac.c b/libavcodec/aac/aacdec_usac.c
index 32b3c534bf1..1b79d19a30f 100644
--- a/libavcodec/aac/aacdec_usac.c
+++ b/libavcodec/aac/aacdec_usac.c
@@ -834,6 +834,7 @@  static int setup_sce(AACDecContext *ac, SingleChannelElement *sce,
                "Number of scalefactor bands in group (%d) "
                "exceeds limit (%d).\n",
                ics->max_sfb, ics->num_swb);
+        ics->max_sfb = 0;
         return AVERROR(EINVAL);
     }