From patchwork Thu Jun 4 20:03:27 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thierry Foucu X-Patchwork-Id: 20153 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 87AB444A915 for ; Thu, 4 Jun 2020 23:32:34 +0300 (EEST) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 6340968B01D; Thu, 4 Jun 2020 23:32:34 +0300 (EEST) X-Original-To: ffmpeg-devel@ffmpeg.org Delivered-To: ffmpeg-devel@ffmpeg.org Received: from mail-oi1-f193.google.com (mail-oi1-f193.google.com [209.85.167.193]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id F010568ABAB for ; Thu, 4 Jun 2020 23:32:27 +0300 (EEST) Received: by mail-oi1-f193.google.com with SMTP id c194so6284829oig.5 for ; Thu, 04 Jun 2020 13:32:27 -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=mmNml9aVXVE/hHzeEfUwNxd/gjW7K17iggH6Zdtud1o=; b=J5HFryl7+vmqHAqJ54/h+RcF7VPpK8+q20E5rNoCs/Spgv1b1yV/QOBC9CyWM5/I7a bX2gJDOYvMGDwfOQOAZN7OjKYHWNf1YrCRDCwh1XlJYRHtv3AjhBEKi5N6EBtb45M+AI ujcFqLYKvpenXkVXIJs9YMOEIU2UGRntQ6cgwP9QxzakTMzJ3RYYh7S7x5qUKLDcocPF ab4/IQpPyrxh4oS0brzCWalOoBCoEAztm7xJ8+lOO336qJDpR1KGO/37AlIg0jObw1VL UWgds3ChhOqOprCJzLJW9RBoZnRbI9o0E5GaUz32vbOUNfM71t7DIEe3NfrSjQ9Ercbu jDGA== 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=mmNml9aVXVE/hHzeEfUwNxd/gjW7K17iggH6Zdtud1o=; b=URW1Upn+tQI+DE0nuCU3W13ByISkIa1WZH0dD1geywiT5bxJh6YdHJDSfJRX5ZUxMd sSoTElAQmVYMpFIgQRwrFGH86dVEfelKCK3PSQlgoEii6iyiu48XOyeZHLlxYb9AlFz0 L4jdTofl6jvRYErO+RWFan2u4V8UoKt0bpOaxMlyy1MZlIaLLvLjtbIPiI/tuxDEEF98 VmFSb+CpstHPV4fntrDj7R0OaJpftTq+TuRZMNBDMW8H6doE69sR8XJzk2mZR6GnX2ZG 8rNhGvOP+P5obxCdppgQxhPCzNG+x1Jp3HO9YIxAdMy/XMKWeKPGlqukWtNvV/021xKs eiVQ== X-Gm-Message-State: AOAM532nt9PUdMxKrIVjKwlxfqn6KY8Nto20u+fVa8pUapjgS+9Fd4M2 FeapKv4adH3vdyvdj5E/Ci/nObKW X-Google-Smtp-Source: ABdhPJyViXGd5FrcrjaKwTXnuTl+h+l7yPCwdv0qzUkg3vQTPKsEfqcqg20y01LK1CLPERP8ysQd0g== X-Received: by 2002:a17:90a:e60d:: with SMTP id j13mr8046266pjy.127.1591301009782; Thu, 04 Jun 2020 13:03:29 -0700 (PDT) Received: from tfoucu.mtv.corp.google.com ([2620:0:1000:4001:8e18:4d51:fb1:d54f]) by smtp.gmail.com with ESMTPSA id g6sm5209081pfb.164.2020.06.04.13.03.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 04 Jun 2020 13:03:29 -0700 (PDT) From: Thierry Foucu To: ffmpeg-devel@ffmpeg.org Date: Thu, 4 Jun 2020 13:03:27 -0700 Message-Id: <20200604200327.157832-1-tfoucu@gmail.com> X-Mailer: git-send-email 2.27.0.278.ge193c7cf3a9-goog MIME-Version: 1.0 Subject: [FFmpeg-devel] [PATCH 3/3] libavcodec/bmp_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 bmp parser cannot combine the frame, the poutbuf is not set. --- libavcodec/bmp_parser.c | 1 + 1 file changed, 1 insertion(+) diff --git a/libavcodec/bmp_parser.c b/libavcodec/bmp_parser.c index cd65f02a2e..700bf27af1 100644 --- a/libavcodec/bmp_parser.c +++ b/libavcodec/bmp_parser.c @@ -45,6 +45,7 @@ static int bmp_parse(AVCodecParserContext *s, AVCodecContext *avctx, int i = 0; *poutbuf_size = 0; + *poutbuf = NULL; restart: if (bpc->pc.frame_start_found <= 2+4+4) {