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authorMichael Niedermayer <michael@niedermayer.cc>2025-06-21 23:15:21 +0200
committerMichael Niedermayer <michael@niedermayer.cc>2025-07-30 01:18:03 +0200
commitf09c834a7d01dfde9369551b2767c001846a396f (patch)
tree5c2aa04cda3d44e16c011076d26ffda9e4db6564
parentebcdba4c6b340b26674f7bee9abc585a26a45304 (diff)
downloadffmpeg-master.tar.gz
avcodec/cbs_apv_syntax_template: Check tile_data_sizeHEADmaster
Fixes: heap-buffer-overflow Fixes: 418421333/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_APV_fuzzer-6592025183191040 Fixes: 418804929/clusterfuzz-testcase-minimized-ffmpeg_BSF_APV_METADATA_fuzzer-5773904646045696 Fixes: 420737045/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_APV_fuzzer-5535272169439232 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
-rw-r--r--libavcodec/cbs_apv_syntax_template.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/libavcodec/cbs_apv_syntax_template.c b/libavcodec/cbs_apv_syntax_template.c
index fc8a08ff31..b84565b107 100644
--- a/libavcodec/cbs_apv_syntax_template.c
+++ b/libavcodec/cbs_apv_syntax_template.c
@@ -236,6 +236,8 @@ static int FUNC(tile)(CodedBitstreamContext *ctx, RWContext *rw,
#ifdef READ
int pos = get_bits_count(rw);
av_assert0(pos % 8 == 0);
+ if (get_bits_left(rw) < 8LL * comp_size)
+ return AVERROR_INVALIDDATA;
current->tile_data[c] = (uint8_t*)align_get_bits(rw);
skip_bits_long(rw, 8 * comp_size);
#else