From patchwork Thu Jun 4 20:03:15 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thierry Foucu X-Patchwork-Id: 20152 Return-Path: X-Original-To: patchwork@ffaux-bg.ffmpeg.org Delivered-To: patchwork@ffaux-bg.ffmpeg.org Received: from ffbox0-bg.mplayerhq.hu (ffbox0-bg.ffmpeg.org [79.124.17.100]) by ffaux.localdomain (Postfix) with ESMTP id 58E4744AACD for ; Thu, 4 Jun 2020 23:10:05 +0300 (EEST) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 334D568AFEB; Thu, 4 Jun 2020 23:10:05 +0300 (EEST) X-Original-To: ffmpeg-devel@ffmpeg.org Delivered-To: ffmpeg-devel@ffmpeg.org Received: from mail-il1-f196.google.com (mail-il1-f196.google.com [209.85.166.196]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id 43B5668A452 for ; Thu, 4 Jun 2020 23:09:58 +0300 (EEST) Received: by mail-il1-f196.google.com with SMTP id p5so7356462ile.6 for ; Thu, 04 Jun 2020 13:09:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=LRna/H80I+WRninX4255ZrjVchYFGmoxrcewFKJyTlc=; b=X2ZeHo0DqwKnfNYYFHyR3xe7VWqdpO6HVsOCT4KynuE0GMaHxRlMRacl5H6zgz818b XjIEF0nD/Zt9JDwFx0HAhIat9dftvmwJF859wC2yocQcDDE00UUFpatoCLtkn0k2mx4g dbSVbbX1v6YVMaRMciFELUk8AnNEfC8Dex4zl8+GYBklVtHNPO4vbCfUznI/Fh/cvHbb QG0zEN9PgIO2ESqxuucVHGaEApqrSqPbdO4gwDcgRkKyxmcei1ifGbL+MMO4Lss8ljsY 9/h6/pJR9VhLkBbUD2fs/pa46tmEK7fVZEHK7IAqejwA9dKyMyW9TIk34wg6TmYb5YU7 v/mg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=LRna/H80I+WRninX4255ZrjVchYFGmoxrcewFKJyTlc=; b=oYXooIvO8pMgK3FQoNB1HbN12lbHSwDum3QpsslNKHa7JXsjykM/jaCU+WkS/+d0FQ f57GMGcxlXW+m4J7nk+5g7FoqOVPwjhw+92AiZ+SER9mxwAFIBi0YetvXyK7pRz+AYmI LRkVpMFbws7ldq8sehI62hL4NoXa5XNOXeBPyWoA9P1JOMOUZ7U42iThyEpU6NNczAR+ 94CmeN2H1GINZO1/k7AhjBAmf6TQ9QeYs5pWUPMmTBSyn/KmSWNP0aQ3rzB6/iqwp6uA ShBIT4Bd/zvC1wVy4eV4PBn0s+yGT5SgicXetaF6O+2OmeHTolTrZO9nxb+NJp9Z6pmF ox+g== X-Gm-Message-State: AOAM530ixxhmdl8DufYxUqhe/pNIkQF7lJMQSdOBh3J+cUGboxzhmciU VF0h5kKUGMy/SRJSvDRB9DhRyKyP X-Google-Smtp-Source: ABdhPJxxCjYTbc2GYHllxh2UAEO7UiCB31HaR26zdT14yi3HzjuCwPIkWZfgxzR9F8uSE8dLEFnAcA== X-Received: by 2002:a63:f202:: with SMTP id v2mr5858797pgh.17.1591300998900; Thu, 04 Jun 2020 13:03:18 -0700 (PDT) Received: from tfoucu.mtv.corp.google.com ([2620:0:1000:4001:8e18:4d51:fb1:d54f]) by smtp.gmail.com with ESMTPSA id y136sm5429783pfg.55.2020.06.04.13.03.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 04 Jun 2020 13:03:18 -0700 (PDT) From: Thierry Foucu To: ffmpeg-devel@ffmpeg.org Date: Thu, 4 Jun 2020 13:03:15 -0700 Message-Id: <20200604200315.157718-1-tfoucu@gmail.com> X-Mailer: git-send-email 2.27.0.278.ge193c7cf3a9-goog MIME-Version: 1.0 Subject: [FFmpeg-devel] [PATCH 2/3] libavcodec/mlp_parser.c: fix a use_of_uninitialized_value in target_dec_fuzzer. X-BeenThere: ffmpeg-devel@ffmpeg.org X-Mailman-Version: 2.1.20 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 Cc: Thierry Foucu Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" the target_dec_fuzzer is checking for the avpkt.data pointer but if the mlp parser cannot combine the frame, the poutbuf is not set. --- libavcodec/mlp_parser.c | 1 + 1 file changed, 1 insertion(+) diff --git a/libavcodec/mlp_parser.c b/libavcodec/mlp_parser.c index 5d2ddc5a70..e7162f4aa8 100644 --- a/libavcodec/mlp_parser.c +++ b/libavcodec/mlp_parser.c @@ -64,6 +64,7 @@ static int mlp_parse(AVCodecParserContext *s, s->key_frame = 0; *poutbuf_size = 0; + *poutbuf = NULL; if (buf_size == 0) return 0;