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Wed, 18 Feb 2026 14:51:27 +0200 (EET) MIME-Version: 1.0 To: ffmpeg-devel@ffmpeg.org Date: Wed, 18 Feb 2026 12:51:26 -0000 Message-ID: <177141908732.25.16840185261073142878@29965ddac10e> Message-ID-Hash: 3BCVHMT4WQYLEU6L7IWRGSZLYF3JWJH7 X-Message-ID-Hash: 3BCVHMT4WQYLEU6L7IWRGSZLYF3JWJH7 X-MailFrom: code@ffmpeg.org X-Mailman-Rule-Hits: nonmember-moderation X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; loop; banned-address; header-match-ffmpeg-devel.ffmpeg.org-0; header-match-ffmpeg-devel.ffmpeg.org-1; header-match-ffmpeg-devel.ffmpeg.org-2; header-match-ffmpeg-devel.ffmpeg.org-3; emergency; member-moderation X-Mailman-Version: 3.3.10 Precedence: list Reply-To: FFmpeg development discussions and patches Subject: [FFmpeg-devel] [PR] avcodec/rv60dec: check last_size (PR #21784) List-Id: FFmpeg development discussions and patches Archived-At: Archived-At: List-Archive: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: From: michaelni via ffmpeg-devel Cc: michaelni Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Archived-At: List-Archive: List-Post: PR #21784 opened by michaelni URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/21784 Patch URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/21784.patch Fixes: signed integer overflow: 1878131215 + 2013265920 cannot be represented in type 'int' Fixes: 472729732/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_RV60_fuzzer-4893818005815296 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer >>From ac680b7a677f534d6735fe33d175051766ae6a28 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Mon, 16 Feb 2026 01:58:01 +0100 Subject: [PATCH] avcodec/rv60dec: check last_size Fixes: signed integer overflow: 1878131215 + 2013265920 cannot be represented in type 'int' Fixes: 472729732/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_RV60_fuzzer-4893818005815296 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/rv60dec.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/libavcodec/rv60dec.c b/libavcodec/rv60dec.c index 76caa6a361..2a7c5c1147 100644 --- a/libavcodec/rv60dec.c +++ b/libavcodec/rv60dec.c @@ -395,14 +395,14 @@ static int read_frame_header(RV60Context *s, GetBitContext *gb, int * width, int static int read_slice_sizes(RV60Context *s, GetBitContext *gb) { int nbits = get_bits(gb, 5) + 1; - int last_size; + int64_t last_size; for (int i = 0; i < s->cu_height; i++) s->slice[i].sign = get_bits1(gb); s->slice[0].size = last_size = get_bits_long(gb, nbits); - if (last_size < 0) + if (last_size < 0 || last_size > INT32_MAX) return AVERROR_INVALIDDATA; for (int i = 1; i < s->cu_height; i++) { @@ -411,7 +411,7 @@ static int read_slice_sizes(RV60Context *s, GetBitContext *gb) last_size += diff; else last_size -= diff; - if (last_size <= 0) + if (last_size <= 0 || last_size > INT32_MAX) return AVERROR_INVALIDDATA; s->slice[i].size = last_size; } -- 2.52.0 _______________________________________________ ffmpeg-devel mailing list -- ffmpeg-devel@ffmpeg.org To unsubscribe send an email to ffmpeg-devel-leave@ffmpeg.org