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authorMichael Niedermayer <michael@niedermayer.cc>2020-12-19 00:22:04 +0100
committerMichael Niedermayer <michael@niedermayer.cc>2020-12-22 00:30:50 +0100
commit5cae71d2b722d0beed4d46f189db42fbb57d877b (patch)
treefb45fa37a1373dbeae42753510f30e2eb1067a4a /libavcodec/ffv1dec.c
parentc0e660ba14161f1d58dab2e59c603a08aff9e8c8 (diff)
downloadffmpeg-5cae71d2b722d0beed4d46f189db42fbb57d877b.tar.gz
avcodec/ffv1dec: Fix off by 1 error with quant tables
Fixes: assertion failure Fixes: 28447/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_FFV1_fuzzer-5369575948550144 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Reviewed-by: Paul B Mahol <onemda@gmail.com> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavcodec/ffv1dec.c')
-rw-r--r--libavcodec/ffv1dec.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/ffv1dec.c b/libavcodec/ffv1dec.c
index c704373cfe..0a3f425493 100644
--- a/libavcodec/ffv1dec.c
+++ b/libavcodec/ffv1dec.c
@@ -786,7 +786,7 @@ static int read_header(FFV1Context *f)
if (f->version == 2) {
int idx = get_symbol(c, state, 0);
- if (idx > (unsigned)f->quant_table_count) {
+ if (idx >= (unsigned)f->quant_table_count) {
av_log(f->avctx, AV_LOG_ERROR,
"quant_table_index out of range\n");
return AVERROR_INVALIDDATA;