From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 0F416464EA; Wed, 2 Apr 2025 23:54:02 +0200 (CEST) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id A53944021E; Wed, 2 Apr 2025 23:54:01 +0200 (CEST) Received: from inbox.dpdk.org (inbox.dpdk.org [95.142.172.178]) by mails.dpdk.org (Postfix) with ESMTP id D785B4014F for ; Wed, 2 Apr 2025 23:54:00 +0200 (CEST) Received: by inbox.dpdk.org (Postfix, from userid 33) id B2E6A464EB; Wed, 2 Apr 2025 23:54:00 +0200 (CEST) From: bugzilla@dpdk.org To: dev@dpdk.org Subject: [DPDK/ethdev Bug 1687] ring PMD uses unsafe internal devarg Date: Wed, 02 Apr 2025 21:54:00 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: DPDK X-Bugzilla-Component: ethdev X-Bugzilla-Version: 25.03 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: stephen@networkplumber.org X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Resolution: X-Bugzilla-Priority: Normal X-Bugzilla-Assigned-To: dev@dpdk.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter target_milestone Message-ID: Content-Type: multipart/alternative; boundary=17436308400.FF2D58eA3.1506399 Content-Transfer-Encoding: 7bit X-Bugzilla-URL: http://bugs.dpdk.org/ Auto-Submitted: auto-generated X-Auto-Response-Suppress: All MIME-Version: 1.0 X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org --17436308400.FF2D58eA3.1506399 Date: Wed, 2 Apr 2025 23:54:00 +0200 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://bugs.dpdk.org/ Auto-Submitted: auto-generated X-Auto-Response-Suppress: All https://bugs.dpdk.org/show_bug.cgi?id=3D1687 Bug ID: 1687 Summary: ring PMD uses unsafe internal devarg Product: DPDK Version: 25.03 Hardware: All OS: All Status: UNCONFIRMED Severity: normal Priority: Normal Component: ethdev Assignee: dev@dpdk.org Reporter: stephen@networkplumber.org Target Milestone: --- The ring PMD uses and undocumented devarg of "internal=3D" to create network device from ring parameters. The problem is that it passes a pointer across devargs which leads to ruin. There is no way to validate that pointer real= ly points to valid data. Example: dpdk-testpmd --vdev=3Dnet_ring0,internal=3D0xdeadbeef -- -i EAL: Detected CPU lcores: 20 EAL: Detected NUMA nodes: 1 EAL: Detected static linkage of DPDK EAL: Multi-process socket /var/run/dpdk/rte/mp_socket EAL: Selected IOVA mode 'VA' Segmentation fault This is a design flaw. --=20 You are receiving this mail because: You are the assignee for the bug.= --17436308400.FF2D58eA3.1506399 Date: Wed, 2 Apr 2025 23:54:00 +0200 MIME-Version: 1.0 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://bugs.dpdk.org/ Auto-Submitted: auto-generated X-Auto-Response-Suppress: All

Bug ID	1687
Summary	ring PMD uses unsafe internal devarg
Product	DPDK
Version	25.03
Hardware	All
OS	All
Status	UNCONFIRMED
Severity	normal
Priority	Normal
Component	ethdev
Assignee	dev@dpdk.org
Reporter	stephen@networkplumber.org
Target Milestone	---

The ring PMD uses and undocumented=
 devarg of "internal=3D" to create network
device from ring parameters. The problem is that it passes a pointer across
devargs which leads to ruin.  There is no way to validate that pointer real=
ly
points to valid data.

Example:
dpdk-testpmd --vdev=3Dnet_ring0,internal=3D0xdeadbeef -- -i
EAL: Detected CPU lcores: 20
EAL: Detected NUMA nodes: 1
EAL: Detected static linkage of DPDK
EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
EAL: Selected IOVA mode 'VA'
Segmentation fault

This is a design flaw.

You are receiving this mail because:

You are the assignee for the bug.

=20=20=20=20=20=20=20=20=20=20

= --17436308400.FF2D58eA3.1506399--