From nobody Sat May 07 01:36:07 2022 X-Original-To: net@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id EAEC31AD70C6 for ; Sat, 7 May 2022 01:36:07 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4Kw94l5bHxz4hZb for ; Sat, 7 May 2022 01:36:07 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2610:1c1:1:606c::50:1d]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 9F9F626D5E for ; Sat, 7 May 2022 01:36:07 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 2471a7Um037677 for ; Sat, 7 May 2022 01:36:07 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 2471a72b037676 for net@FreeBSD.org; Sat, 7 May 2022 01:36:07 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: net@FreeBSD.org Subject: [Bug 263824] genet(4): Driver interface may overwrite memory in a consecutive memory copy operations when parsing TX packet Date: Sat, 07 May 2022 01:36:07 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: bin X-Bugzilla-Version: CURRENT X-Bugzilla-Keywords: needs-qa, security X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: jiahali@blackberry.com X-Bugzilla-Status: Open X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: karels@freebsd.org X-Bugzilla-Flags: maintainer-feedback? mfc-stable13? mfc-stable12? X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated List-Id: Networking and TCP/IP with FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-net List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-net@freebsd.org MIME-Version: 1.0 ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1651887367; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=4bAx0gSlhOjlNCbmohpZzbuUSBvOnHaLWaF/nQxijuA=; b=ZECTQINdfvm8MVd6DW+KlbQBJNVqdYNd9alWBZ9Wrp86YVbl+tKuZi+4W2+t2FBn3ZdeTk VCIYx5jamXqZ04gBbvRILpqMk3yVTs5LCnsuY0FhJhboT/u4TyVxpIMhzgGDIpLn9IX45e PdtmM+LhsoKa0x2UHXCSvxLG8k8bp3FM8h7nhS1DPf/4eE5Vx6JQJvEn7CMKXH7SiMk9Ks 9B5sLhn3ad4KK/G8WE9yEaAKeneXFhT0JS0ubptV2+esmUwkazn24YpRSvqJ6ZkmqwWhHe ts6AWjp9mspJDcmf83/zyubp3N3AQLUvxpTzAeVL/KyNHZVaM9k+r8v4yJFoXQ== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1651887367; a=rsa-sha256; cv=none; b=r7w3IrYF8MTga27cq/4A6f2maHxM2LJ3aj+K/7lLLmkFr/VPSsi9hTjRuQ6Timx/6ExFON wAKR4wuA/b0p4noAm/ZWiw+3GkHcZTHUTMHgenzS85cf5Ve9LevxYMCc6rhDo04+xeptiY lYkws3m9oW8K0pRNwRHHUuZgFRbAylVA27aEpIZ891d2qnx1jcPhUx2ebqdXjsZqfiZHRC JwON8WSFnTGH+DAk91oXqBkXpq0dWAQxUuuOOPTWMla03LZ8TaoKLbsojAdgfST3w2mIWP xESWYOu6bOkXXZ5uCbFfQLPS1RSdAvOai/x2QGhtzkP1KlyErU4ElvGYn/SQ9w== ARC-Authentication-Results: i=1; mx1.freebsd.org; none X-ThisMailContainsUnwantedMimeParts: N https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D263824 --- Comment #2 from Jiahao LI --- (In reply to Mike Karels from comment #1) Yes, exactly. The link-layer header will be overwritten by the network head= er if they are located in two consecutive mbufs. And the "statusblock" is prepended before the link-layer header in the same mbuf. --=20 You are receiving this mail because: You are on the CC list for the bug.=