From: Michael Niedermayer <michael@niedermayer.cc>
To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Subject: [FFmpeg-devel] [PATCH 8/8] avcodec/vvc/ctu: Check ff_vvc_num_signalled_palette_entries
Date: Fri, 20 Jun 2025 02:32:55 +0200
Message-ID: <20250620003255.295598-8-michael@niedermayer.cc> (raw)
In-Reply-To: <20250620003255.295598-1-michael@niedermayer.cc>
Fixes: index 107 out of bounds for type 'uint16_t const[63]'
Fixes: 421336912/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_VVC_fuzzer-6436225806565376
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
libavcodec/vvc/ctu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavcodec/vvc/ctu.c b/libavcodec/vvc/ctu.c
index 7fa2b496389..cf7edccb8b8 100644
--- a/libavcodec/vvc/ctu.c
+++ b/libavcodec/vvc/ctu.c
@@ -1889,7 +1889,7 @@ static int palette_signaled(VVCLocalContext *lc, const bool local_dual_tree,
const int size = nb_predicted + nb_signaled;
const bool dual_tree_luma = local_dual_tree && cu->tree_type == DUAL_TREE_LUMA;
- if (size > max_entries)
+ if (size > max_entries || nb_signaled < 0)
return AVERROR_INVALIDDATA;
for (int c = start; c < end; c++) {
--
2.49.0
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prev parent reply other threads:[~2025-06-20 0:34 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-20 0:32 [FFmpeg-devel] [PATCH 1/8] avcodec/psd: Move frame allocation after RLE processing Michael Niedermayer
2025-06-20 0:32 ` [FFmpeg-devel] [PATCH 2/8] avcodec/hcadec: Check sample_rate Michael Niedermayer
2025-06-20 8:45 ` Andreas Rheinhardt
2025-06-20 14:28 ` Michael Niedermayer
2025-06-20 0:32 ` [FFmpeg-devel] [PATCH 3/8] swscale/output: Fix integer overflows in yuv2rgba64_1_c_template() Michael Niedermayer
2025-06-20 0:32 ` [FFmpeg-devel] [PATCH 4/8] tools/target_dec_fuzzer: adjust threshold for VP8 Michael Niedermayer
2025-06-20 0:32 ` [FFmpeg-devel] [PATCH 5/8] avformat/mov: Check that sample_sizes is allocated in mov_parse_heif_items() Michael Niedermayer
2025-06-20 0:53 ` James Almer
2025-06-20 14:39 ` Michael Niedermayer
2025-06-20 0:32 ` [FFmpeg-devel] [PATCH 6/8] avcodec/vvc/ctu: Check palette_escape_val Michael Niedermayer
2025-06-20 0:32 ` [FFmpeg-devel] [PATCH 7/8] avcodec/vvc/cabac: Check k in kth_order_egk_decode() Michael Niedermayer
2025-06-20 0:32 ` Michael Niedermayer [this message]
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