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 A010C35C6B8 for ; Sat, 15 Aug 2026 06:13:47 +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=1786774428; cv=none; b=FX5dEmSRi8GTxZgU3GtHV54bnaXnF8x6I+dUA//vFLeEMxCqcFsgKSP48uam6Y5tzGdEiKgWYfeRdOHNtrWW5wk0XN80Snp7oMyHFMz+pBdODhwNjhmIt9ys8BIpWCBkFvQUo3DsqoTvW42VVE4+4DRT7mrUSy5SeN/709WQ4Kw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786774428; c=relaxed/simple; bh=MvarD++RKEA/gvHxAjmHSmbNgJyh8SivbUEjBKdo9qI=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=ppNxKvjXCrZYK/jhEwIETu7GnLZdVVtv39twOu9lkiR9eKb1gV3Tu/b7WeUThDsEBJVHZ+zCU2I1Wj8RwH/fhY2V3MCWdWikoQ2/pxqvct1GybSgiFAcK8bPCkH0zky3A4rbQgqSKvD4bzaNTADoPCtMbGrOLoAc9psx6pQV7WI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=ni23l1Qg; 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="ni23l1Qg" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A9A9A1F000E9; Sat, 15 Aug 2026 06:13:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1786774427; bh=Wtpuz2uU7AQeYa6PJYFbtNZdMv1YUbhTAsxvXH7EQL8=; h=From:To:Cc:Subject:Date:Reply-To; b=ni23l1Qg7YskHhbYF28blT3l0a6F1mQnDEcuO3GUX3DhWKFWMBGCO7Eil2NX2GG0l U1KwFFM9cBfEj6W5NnXhyPs21daFO/c+9frSXW3C10Q+mA2zoGKILcFTG350xDBkId mnInl0H1oSNO+An1/Mc7795sJT+z/NMpYeCRyRDE= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2026-72150: sunrpc: fix uninitialized xprt_create_args structure Date: Sat, 15 Aug 2026 15:03:49 +0900 Message-ID: <2026081534-CVE-2026-72150-fe35@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=2352; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=dP3JP6IyETiTvHzlDPwC5D0enbtHuHu/2DKOQjC6sp0=; b=owGbwMvMwCRo6H6F97bub03G02pJDFkNDPsOV6t6S6xn4jzBlsc5MdrVeJnj5F/3lzscTVj3c E3DzLSOjlgWBkEmBlkxRZYv23iO7q84pOhlaHsaZg4rE8gQBi5OAZjIkuMM82vf/uI+sW2qiMFn hw+5m1vFVphdS2ZYsCgk5IKz39cFS+KuZ+Ywb+2+stp2LQA= 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: sunrpc: fix uninitialized xprt_create_args structure The xprt_create_args structure is allocated on the stack without initialization in rpc_sysfs_xprt_switch_add_xprt_store(). While some fields are manually populated, critical fields like srcaddr, bc_xps, and flags contain uninitialized stack garbage. This can lead to: 1. Kernel panic when xs_setup_xprt() dereferences garbage srcaddr 2. Information leak if srcaddr points to sensitive stack data 3. Unpredictable behavior if flags has random bits set The fix is to zero-initialize the structure to ensure all unused fields are NULL/0, preventing the transport setup code from acting on garbage data. The Linux kernel CVE team has assigned CVE-2026-72150 to this issue. Affected and fixed versions =========================== Fixed in 6.18.40 with commit 933654508b2bc36e2c3c086c0365e2403fb2141f Fixed in 7.1.5 with commit 7d3ce3bd23c062a7c1c6d372d1b08e48b9e17cc3 Fixed in 7.2-rc1 with commit 17d90b68c3a3d7d7e95b49e1fe9381a723f637a8 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-2026-72150 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: net/sunrpc/sysfs.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/933654508b2bc36e2c3c086c0365e2403fb2141f https://git.kernel.org/stable/c/7d3ce3bd23c062a7c1c6d372d1b08e48b9e17cc3 https://git.kernel.org/stable/c/17d90b68c3a3d7d7e95b49e1fe9381a723f637a8