From nobody Sat May 4 00:26:32 2024 Delivered-To: importer@patchew.org Received-SPF: pass (zohomail.com: domain of groups.io designates 66.175.222.12 as permitted sender) client-ip=66.175.222.12; envelope-from=bounce+27952+56834+1787277+3901457@groups.io; helo=web01.groups.io; Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of groups.io designates 66.175.222.12 as permitted sender) smtp.mailfrom=bounce+27952+56834+1787277+3901457@groups.io; dmarc=fail(p=none dis=none) header.from=linux.intel.com ARC-Seal: i=1; a=rsa-sha256; t=1585735619; cv=none; d=zohomail.com; s=zohoarc; b=jl8Ens4INmHhchvAcbSlco2oUfKbM6aRsHwl0PTHvTWJD4NS846potIgED7RT1nEvgf39OjEHaVlu4pPomErdhlk3wpb2JvCdvGWrxbKGAJHEoL/vx185ITHIA34Zdrw5P9IItslHJqK08nQCfhS/Tnw0P6s3pkjgqupwstdvho= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1585735619; h=Content-Transfer-Encoding:Cc:Date:From:List-Id:List-Unsubscribe:MIME-Version:Message-ID:Reply-To:Sender:Subject:To; bh=jOXJFge4PrqkwdVe3QBhPpBjqGsMlc+djgSsasWymdQ=; b=ncJlRjccKrt/pl2s2uudtFlOLEGdjxeYfPIs43X57AbWcYnwNb/i6vlQt/zAVwDiuaAKt2NuQIkkTXiYN6yZfcK5wvOMjIu1o5bvnFvRIejfVvzbb6eBkGa47eNvitJvUZSgtFnBkFNTyWJNr7h+VUEH41rWGMcFQ59/1c4GMvU= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of groups.io designates 66.175.222.12 as permitted sender) smtp.mailfrom=bounce+27952+56834+1787277+3901457@groups.io; dmarc=fail header.from= (p=none dis=none) header.from= Received: from web01.groups.io (web01.groups.io [66.175.222.12]) by mx.zohomail.com with SMTPS id 1585735619537341.54794363596045; Wed, 1 Apr 2020 03:06:59 -0700 (PDT) Return-Path: X-Received: by 127.0.0.2 with SMTP id YAkVYY1788612xZUSQKECBeR; Wed, 01 Apr 2020 03:06:59 -0700 X-Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by mx.groups.io with SMTP id smtpd.web10.3014.1585735618495831976 for ; Wed, 01 Apr 2020 03:06:58 -0700 IronPort-SDR: Rk3HVsGkY5dw/RJren1Qc78+wc+vdJifV8/qQtBsecPljWFizYqgqV+ZZ95LZYT3pXJX809g1E NWvRswTMBkWg== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False X-Received: from orsmga005.jf.intel.com ([10.7.209.41]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 01 Apr 2020 03:06:57 -0700 IronPort-SDR: QSNw7MPUaTyqEeqEXY3/THpN7qT1L8IknrqgN0kZrMGPCnKFeePv7ro4cdjiC57/ft/fqKnxR4 eSVIPQqLnBCA== X-IronPort-AV: E=Sophos;i="5.72,331,1580803200"; d="scan'208";a="422662008" X-Received: from mrabeda-mobl.ger.corp.intel.com ([10.213.11.210]) by orsmga005-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 01 Apr 2020 03:06:56 -0700 From: "Maciej Rabeda" To: devel@edk2.groups.io Cc: Ray Ni , Zhichao Gao , Siyuan Fu Subject: [edk2-devel] [PATCH v2] ShellPkg: Fix 'ping' command Ip4 receive flow. Date: Wed, 1 Apr 2020 12:06:52 +0200 Message-Id: <20200401100652.2049-1-maciej.rabeda@linux.intel.com> MIME-Version: 1.0 Precedence: Bulk List-Unsubscribe: Sender: devel@edk2.groups.io List-Id: Mailing-List: list devel@edk2.groups.io; contact devel+owner@edk2.groups.io Reply-To: devel@edk2.groups.io,maciej.rabeda@linux.intel.com X-Gm-Message-State: Rt6D9VwUKjSooe9OXoWPMC2tx1787277AA= Content-Transfer-Encoding: quoted-printable DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=groups.io; q=dns/txt; s=20140610; t=1585735619; bh=u+pcdc1lLnIAILiBDKaJtbHltPqMRG4f2PBQJ8U7uJ0=; h=Cc:Date:From:Reply-To:Subject:To; b=OcM6Hc5R2uc7cWU6LhP56RrSemCPaDgu4LNWWhXg4zp98Kd4iKJm2QDb+EztKiHj7tq ZXiLxBTkqoSuR9KQyj35kGCNnlquSauE8dP5guDP8TGbosPyMQzKRXit/XtLX+t1Mux7g kFMUW2TSAaNC/n3V9mMlPGQfZFPK77kJSzQ= X-ZohoMail-DKIM: pass (identity @groups.io) Content-Type: text/plain; charset="utf-8" REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3D2032 'ping' command's receive flow utilizes a single Rx token which it attempts to reuse before recycling the previously received packet. This causes a situation where under ICMP traffic, Ping6OnEchoReplyReceived() function will receive an already recycled packet with EFI_SUCCESS token status and finally dereference invalid pointers from RxData structure. Cc: Ray Ni Cc: Zhichao Gao Signed-off-by: Maciej Rabeda Reviewed-by: Siyuan Fu Acked-by: Zhichao Gao --- ShellPkg/Library/UefiShellNetwork1CommandsLib/Ping.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/ShellPkg/Library/UefiShellNetwork1CommandsLib/Ping.c b/ShellPk= g/Library/UefiShellNetwork1CommandsLib/Ping.c index 23567fa2c1bb..a3fa32515192 100644 --- a/ShellPkg/Library/UefiShellNetwork1CommandsLib/Ping.c +++ b/ShellPkg/Library/UefiShellNetwork1CommandsLib/Ping.c @@ -614,6 +614,11 @@ Ping6OnEchoReplyReceived ( =20 ON_EXIT: =20 + // + // Recycle the packet before reusing RxToken + // + gBS->SignalEvent (Private->IpChoice =3D=3D PING_IP_CHOICE_IP6?((EFI_IP6_= RECEIVE_DATA*)Private->RxToken.Packet.RxData)->RecycleSignal:((EFI_IP4_RECE= IVE_DATA*)Private->RxToken.Packet.RxData)->RecycleSignal); + if (Private->RxCount < Private->SendNum) { // // Continue to receive icmp echo reply packets. @@ -632,10 +637,6 @@ ON_EXIT: // Private->Status =3D EFI_SUCCESS; } - // - // Singal to recycle the each rxdata here, not at the end of process. - // - gBS->SignalEvent (Private->IpChoice =3D=3D PING_IP_CHOICE_IP6?((EFI_IP6_= RECEIVE_DATA*)Private->RxToken.Packet.RxData)->RecycleSignal:((EFI_IP4_RECE= IVE_DATA*)Private->RxToken.Packet.RxData)->RecycleSignal); } =20 /** --=20 2.24.0.windows.2 -=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D- Groups.io Links: You receive all messages sent to this group. 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