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Fri, 18 Jul 2025 17:54:44 -0700 (PDT) Received: from Gryph ([2800:2121:b000:82e:e8d6:73cc:c016:88b6]) by smtp.gmail.com with ESMTPSA id 006d021491bc7-615bcac5083sm605162eaf.14.2025.07.18.17.54.43 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 18 Jul 2025 17:54:44 -0700 (PDT) From: James Almer To: ffmpeg-devel@ffmpeg.org Date: Fri, 18 Jul 2025 21:54:33 -0300 Message-ID: <20250719005433.9763-1-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 more NULL pointer 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:453:43: runtime error: applying zero offset to null pointer Signed-off-by: James Almer --- libavcodec/ffv1dec.c | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-) diff --git a/libavcodec/ffv1dec.c b/libavcodec/ffv1dec.c index d613aa5395..cf5ca1bae3 100644 --- a/libavcodec/ffv1dec.c +++ b/libavcodec/ffv1dec.c @@ -442,16 +442,20 @@ static int decode_slice(AVCodecContext *c, void *arg) decode_plane(f, sc, &gb, p->data[0] + ps*x + y*p->linesize[0] , width, height, p->linesize[0], 0, 0, 2, ac); decode_plane(f, sc, &gb, p->data[0] + ps*x + y*p->linesize[0] + (ps>>1), width, height, p->linesize[0], 1, 1, 2, ac); } 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] }; + uint8_t *planes[4] = { p->data[0] + ps * x + y * p->linesize[0] }; + if (f->chroma_planes) { + planes[1] = p->data[1] + ps * x + y * p->linesize[1]; + planes[2] = 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] }; + uint8_t *planes[4] = { p->data[0] + ps * x + y * p->linesize[0] }; + if (f->chroma_planes) { + planes[1] = p->data[1] + ps * x + y * p->linesize[1]; + planes[2] = 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); -- 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".