diff options
| author | Michael Niedermayer <michael@niedermayer.cc> | 2025-06-20 01:37:23 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2025-07-06 19:24:52 +0200 |
| commit | 9d1e4feecebd4fbb6626b0ced5d490e183ef1eaa (patch) | |
| tree | b80ea4e73a16f8a939ea2f6cda6ff76e697c0862 | |
| parent | 38ead08815f803690d9e0484cd84eb01344ed0e9 (diff) | |
| download | ffmpeg-9d1e4feecebd4fbb6626b0ced5d490e183ef1eaa.tar.gz | |
avcodec/vvc/ctu: Check palette_escape_val
Fixes: integer overflow
Fixes: 418314174/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_VVC_fuzzer-4871731867353088
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/vvc/ctu.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/libavcodec/vvc/ctu.c b/libavcodec/vvc/ctu.c index ba4c89b1d1..7fa2b49638 100644 --- a/libavcodec/vvc/ctu.c +++ b/libavcodec/vvc/ctu.c @@ -2053,6 +2053,8 @@ static int palette_subblock_data(VVCLocalContext *lc, const int v = PALETTE_INDEX(xc, yc); if (v == esc) { const int coeff = ff_vvc_palette_escape_val(lc); + if (coeff >= (1U << sps->bit_depth)) + return AVERROR_INVALIDDATA; const int pixel = av_clip_intp2(RSHIFT(coeff * scale, 6), sps->bit_depth); PALETTE_SET_PIXEL(xc, yc, pixel); } else { |