From: Michael Niedermayer <michael@niedermayer.cc> To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org> Subject: [FFmpeg-devel] [PATCH 6/8] avcodec/vvc/ctu: Check palette_escape_val Date: Fri, 20 Jun 2025 02:32:53 +0200 Message-ID: <20250620003255.295598-6-michael@niedermayer.cc> (raw) In-Reply-To: <20250620003255.295598-1-michael@niedermayer.cc> 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> --- libavcodec/vvc/ctu.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/libavcodec/vvc/ctu.c b/libavcodec/vvc/ctu.c index ba4c89b1d1b..7fa2b496389 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 { -- 2.49.0 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-request@ffmpeg.org with subject "unsubscribe".
next prev parent reply other threads:[~2025-06-20 0:34 UTC|newest] Thread overview: 18+ 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 2025-06-23 14:30 ` 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 ` Michael Niedermayer [this message] 2025-06-22 2:25 ` [FFmpeg-devel] [PATCH 6/8] avcodec/vvc/ctu: Check palette_escape_val Nuo Mi 2025-06-22 6:41 ` Andreas Rheinhardt 2025-06-23 2:52 ` Nuo Mi 2025-06-20 0:32 ` [FFmpeg-devel] [PATCH 7/8] avcodec/vvc/cabac: Check k in kth_order_egk_decode() Michael Niedermayer 2025-06-22 2:29 ` Nuo Mi 2025-06-20 0:32 ` [FFmpeg-devel] [PATCH 8/8] avcodec/vvc/ctu: Check ff_vvc_num_signalled_palette_entries Michael Niedermayer 2025-07-06 17:27 ` [FFmpeg-devel] [PATCH 1/8] avcodec/psd: Move frame allocation after RLE processing Michael Niedermayer
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