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Sun, 13 Jul 2025 15:57:22 -0700 (PDT) Received: from Gryph ([2800:2121:b000:82e:5cac:4861:462e:fb7e]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-74eb9f1d34dsm9577673b3a.104.2025.07.13.15.57.21 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 13 Jul 2025 15:57:22 -0700 (PDT) From: James Almer To: ffmpeg-devel@ffmpeg.org Date: Sun, 13 Jul 2025 19:57:18 -0300 Message-ID: <20250713225718.8346-1-jamrial@gmail.com> X-Mailer: git-send-email 2.50.1 MIME-Version: 1.0 Subject: [FFmpeg-devel] [PATCH] avcodec/ffv1dec: don't add offsets to NULL pointers X-BeenThere: ffmpeg-devel@ffmpeg.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: FFmpeg development discussions and patches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: FFmpeg development discussions and patches Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" Archived-At: List-Archive: List-Post: Fixes: libavcodec/ffv1dec.c:452:43: runtime error: applying zero offset to null pointer Signed-off-by: James Almer --- libavcodec/ffv1dec.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/libavcodec/ffv1dec.c b/libavcodec/ffv1dec.c index 8d10d2cf8b..d613aa5395 100644 --- a/libavcodec/ffv1dec.c +++ b/libavcodec/ffv1dec.c @@ -444,14 +444,16 @@ static int decode_slice(AVCodecContext *c, void *arg) } else if (f->use32bit) { uint8_t *planes[4] = { p->data[0] + ps * x + y * p->linesize[0], p->data[1] + ps * x + y * p->linesize[1], - p->data[2] + ps * x + y * p->linesize[2], - p->data[3] + ps * x + y * p->linesize[3] }; + p->data[2] + ps * x + y * p->linesize[2] }; + if (f->transparency) + planes[3] = p->data[3] + ps * x + y * p->linesize[3]; decode_rgb_frame32(f, sc, &gb, planes, width, height, p->linesize); } else { uint8_t *planes[4] = { p->data[0] + ps * x + y * p->linesize[0], p->data[1] + ps * x + y * p->linesize[1], - p->data[2] + ps * x + y * p->linesize[2], - p->data[3] + ps * x + y * p->linesize[3] }; + p->data[2] + ps * x + y * p->linesize[2] }; + if (f->transparency) + planes[3] = p->data[3] + ps * x + y * p->linesize[3]; decode_rgb_frame(f, sc, &gb, planes, width, height, p->linesize); } if (ac != AC_GOLOMB_RICE && f->version > 2) { -- 2.50.1 _______________________________________________ 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".