From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 252B8352005 for ; Sat, 15 Aug 2026 06:09:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786774200; cv=none; b=WhcdWmgK8TM5mre3C4/3cxThru9C7YHw06Pkc9Eba02I7hFyYejvk2FoLwuhmo/LbKeZ+BbKF4AGsAeatakofXGyePhImxxiD2n6JMRE/Mrq1fTbZqNRdvuXZ7zyTppO6d7tZyPeeB0guYsgZGUbalM0ydBkS4zANKvQ1dDzzCQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786774200; c=relaxed/simple; bh=GBcX/Ak7XQPLw6jy5IFkdDNiwlZ8o8XSo1l/H6qFz0Y=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=gq+QCbp0tl9mDgL5/amw++FwWc0T0qKrIQE4m6jZpCuanTdsKszhM9SGQ2P7H1YNl0/+DRexrxgWtBofPQ1c6Jl8ax4HqYBYwUYrtrIIhRJwgjKoytqFwPvcTyaXCF80nnYxoqBcLKwms0prArWpm4Xv/8pP18v2OmViETprvJQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=SayxWO6o; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="SayxWO6o" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7DDE71F000E9; Sat, 15 Aug 2026 06:09:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1786774199; bh=JVPWK3lcbAgWHMBr/h/w5ax7+6lhFV8nUCem5/0ynaY=; h=From:To:Cc:Subject:Date:Reply-To; b=SayxWO6oT3KkK1mujiBwLGk4QDfjssFEoWLdH0yerh1rpDx9+CXGhmizgv/8m5u04 qUCoXAH8sGiVSVh4Ug748njaej+/FxRocHa5s1Vy0cHjPqjciJsWcWY3o/BY3LzPSL wv6pVHA59xWhSX6Vvf6fJd64lQsnkAguEhnpPqE4= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2026-72045: octeontx2-af: cn10k: restrict VF LMTLINE sharing to its own PF Date: Sat, 15 Aug 2026 15:02:04 +0900 Message-ID: <2026081514-CVE-2026-72045-21ac@gregkh> X-Mailer: git-send-email 2.55.0 Reply-To: , Precedence: bulk X-Mailing-List: linux-cve-announce@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=3099; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=XzL55H0ykCkeMkaaRUhyskROZ3ho+nh1Km4tSMw+Yzo=; b=owGbwMvMwCRo6H6F97bub03G02pJDFkNDKsuPvvhphhcxRp04dWGQFuFVWzveWZZ/Lme0rNx3 +Vrr7LvdsSyMAgyMciKKbJ82cZzdH/FIUUvQ9vTMHNYmUCGMHBxCsBEdJcxLNicdMrAkKk3JunQ 17Xrdu7k4LR52suw4OwPwxVntGUsdk149uPA9VXT5kZ+/g0A X-Developer-Key: i=gregkh@linuxfoundation.org; a=openpgp; fpr=F4B60CC5BF78C2214A313DCB3147D40DDB2DFB29 Content-Transfer-Encoding: 8bit From: Greg Kroah-Hartman Description =========== In the Linux kernel, the following vulnerability has been resolved: octeontx2-af: cn10k: restrict VF LMTLINE sharing to its own PF rvu_mbox_handler_lmtst_tbl_setup() uses req->base_pcifunc as a direct index into the LMT map table to read another function's LMTLINE physical base address and copy it into the caller's own LMT map table entry. The mailbox dispatcher authenticates req->hdr.pcifunc from the IRQ source, but req->base_pcifunc is a separate payload field and is not sanitized. Reject the request with -EPERM when a VF caller's base_pcifunc is not a valid function under its own PF. is_pf_func_valid() bounds the FUNC field to the PF's configured VF count, keeping the computed index inside the caller's own slot block. The Linux kernel CVE team has assigned CVE-2026-72045 to this issue. Affected and fixed versions =========================== Issue introduced in 5.14 with commit 893ae97214c385be02f8ec097298cc48c7f0d905 and fixed in 6.6.148 with commit e9c5b03208507dd6d58b0c23a2c60b5c2f4c1b11 Issue introduced in 5.14 with commit 893ae97214c385be02f8ec097298cc48c7f0d905 and fixed in 6.12.101 with commit 54535692bec9ef464adc714108eb19e49e38b5a2 Issue introduced in 5.14 with commit 893ae97214c385be02f8ec097298cc48c7f0d905 and fixed in 6.18.42 with commit c73b8795b45f4ad5a95120d2e9b435ea4616e08e Issue introduced in 5.14 with commit 893ae97214c385be02f8ec097298cc48c7f0d905 and fixed in 7.1.5 with commit 59da37fee81a8d76079313348ca13c5bc90dd6ae Issue introduced in 5.14 with commit 893ae97214c385be02f8ec097298cc48c7f0d905 and fixed in 7.2-rc1 with commit 8cdcf3d2caacdee7ddd363705fb4d93b0c1a0915 Please see https://www.kernel.org for a full list of currently supported kernel versions by the kernel community. Unaffected versions might change over time as fixes are backported to older supported kernel versions. The official CVE entry at https://cve.org/CVERecord/?id=CVE-2026-72045 will be updated if fixes are backported, please check that for the most up to date information about this issue. Affected files ============== The file(s) affected by this issue are: drivers/net/ethernet/marvell/octeontx2/af/rvu_cn10k.c Mitigation ========== The Linux kernel CVE team recommends that you update to the latest stable kernel version for this, and many other bugfixes. Individual changes are never tested alone, but rather are part of a larger kernel release. Cherry-picking individual commits is not recommended or supported by the Linux kernel community at all. If however, updating to the latest release is impossible, the individual changes to resolve this issue can be found at these commits: https://git.kernel.org/stable/c/e9c5b03208507dd6d58b0c23a2c60b5c2f4c1b11 https://git.kernel.org/stable/c/54535692bec9ef464adc714108eb19e49e38b5a2 https://git.kernel.org/stable/c/c73b8795b45f4ad5a95120d2e9b435ea4616e08e https://git.kernel.org/stable/c/59da37fee81a8d76079313348ca13c5bc90dd6ae https://git.kernel.org/stable/c/8cdcf3d2caacdee7ddd363705fb4d93b0c1a0915