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| author | Michael Niedermayer <michael@niedermayer.cc> | 2024-12-02 00:24:53 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2024-12-04 04:23:49 +0100 |
| commit | 61cbcaf93f3b2e10124f4c63ce7cd8dad6505fb2 (patch) | |
| tree | 5cfbc6ba699efe6b09b6786cb9cb28640ecc3cc0 | |
| parent | 559d435fa39f18d54867d609fea97f9736caf73a (diff) | |
| download | ffmpeg-61cbcaf93f3b2e10124f4c63ce7cd8dad6505fb2.tar.gz | |
avcodec/rv60dec: Check qp for intra
The rv60_qp_to_idx table only supports qp up to 31 on intra
Fixes: global-buffer-overflow
Fixes: 377543818/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_RV60_fuzzer-5160167345291264
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Peter Ross <pross@xvid.org>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/rv60dec.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/libavcodec/rv60dec.c b/libavcodec/rv60dec.c index 64fa72d8f2..449650223d 100644 --- a/libavcodec/rv60dec.c +++ b/libavcodec/rv60dec.c @@ -1779,6 +1779,8 @@ static int decode_cu_r(RV60Context * s, AVFrame * frame, ThreadContext * thread, ttype = cu.pu_type == PU_FULL ? TRANSFORM_8X8 : TRANSFORM_4X4; is_intra = cu.cu_type == CU_INTRA; + if (is_intra && qp >= 32) + return AVERROR_INVALIDDATA; cu_pos = ((xpos & 63) >> 3) + ((ypos & 63) >> 3) * 8; switch (ttype) { |