From: Michael Niedermayer <michael@niedermayer.cc> To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org> Subject: [FFmpeg-devel] [PATCH 3/5] avcodec/takdec: Check remaining space for first predictors Date: Tue, 13 May 2025 01:58:30 +0200 Message-ID: <20250512235832.361422-3-michael@niedermayer.cc> (raw) In-Reply-To: <20250512235832.361422-1-michael@niedermayer.cc> Fixes: Timeout Fixes: 403673829/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_TAK_fuzzer-5498240154009600 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc> --- libavcodec/takdec.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/libavcodec/takdec.c b/libavcodec/takdec.c index 74c8d7c7a8b..1e6e6caebda 100644 --- a/libavcodec/takdec.c +++ b/libavcodec/takdec.c @@ -434,6 +434,9 @@ static int decode_subframe(TAKDecContext *s, int32_t *decoded, return AVERROR_INVALIDDATA; } + if (get_bits_left(gb) < 2*10 + 2*size) + return AVERROR_INVALIDDATA; + s->predictors[0] = get_sbits(gb, 10); s->predictors[1] = get_sbits(gb, 10); s->predictors[2] = get_sbits(gb, size) * (1 << (10 - size)); -- 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:[~2025-05-12 23:59 UTC|newest] Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top 2025-05-12 23:58 [FFmpeg-devel] [PATCH 1/5] tools/target_dec_fuzzer: Adjust threshold for WEBP Michael Niedermayer 2025-05-12 23:58 ` [FFmpeg-devel] [PATCH 2/5] avcodec/4xm: Check frame_4cc before allocation Michael Niedermayer 2025-05-12 23:58 ` Michael Niedermayer [this message] 2025-05-12 23:58 ` [FFmpeg-devel] [PATCH 4/5] avformat/matroskadec: check that channels fit in signed 32bit int Michael Niedermayer 2025-05-12 23:58 ` [FFmpeg-devel] [PATCH 5/5] swscale/output: fix integer overflow in yuv2rgba64_full_1_c_template() Michael Niedermayer 2025-05-14 23:31 ` [FFmpeg-devel] [PATCH 1/5] tools/target_dec_fuzzer: Adjust threshold for WEBP Michael Niedermayer
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