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 6FB4241D118 for ; Fri, 11 Sep 2026 19:54:39 +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=1789156484; cv=none; b=jqpPZWjKl3dDjiLCrtamXtLWnxj/MdyAxYnw/8Z7Mqfz3y3gAnn4FindKw7s51EE8cHL+QwtDoAyhConRCFc9APiwSCMb3NXu6Fb5PFMGnfJ7rONYTjF7Z6AabGkKHkttVY9ERK+5h6xhGfvl1c5OtLJ5wqChHSSANsqErSmnRo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789156484; c=relaxed/simple; bh=xBcFisdKgyaftJA6c4hMBhqST/tQfUmtXITreFTtSt8=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=qlC0meTDFExUkjx6YcNSDdLZE6W8Qyn9ytJekjD7rlrI5kCP0oGZ/YT5xowKOoysqtKb7NbWuzXzjND3q2ISraOmswJDJrONslO43CAvfj+rIDOogqXHg5gJz9XJiJgFXQXQCyurnsORlrxV/xd8r95+OruvC7SJPxg+iZaUuLc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=xeV8XZ1g; 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="xeV8XZ1g" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3458B1F0089A; Fri, 11 Sep 2026 19:54:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1789156476; bh=qBleQOUXT/1dNuueWWv+oTvxg/b5iPimxfNj/j6gMTE=; h=From:To:Cc:Subject:Date:Reply-To; b=xeV8XZ1gTAdHnCuUAryP8lJRQIKmuWjbJqUH/xRHqQsQYsXxP/c3/D9gOB7GWghIs bwloEipaVYvkDWa2qrp2yiGM4vdVPfjVVaaf4NjX3HqKqnjECjRGxXGxNSaOwiLjcX 19Dg4P7dYH6iVlRnK8wJ0aiVanzDgcsTbwJAd6Xk= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2026-89531: svcrdma: Reject connection when transport allocation fails Date: Fri, 11 Sep 2026 21:43:40 +0200 Message-ID: <2026091117-CVE-2026-89531-a392@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=2729; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=1077PwwoC8R0rqNEnsddT/sn4cxidtbWqVKbacoAkag=; b=owGbwMvMwCRo6H6F97bub03G02pJDFlLImMvZ0+7r5Pp9uqEVXzUzQ1zFn757rJ93y2vfeIKM 5l9G/UndcSyMAgyMciKKbJ82cZzdH/FIUUvQ9vTMHNYmUCGMHBxCsBEfi9iWLCvdUVJSNaM/ccm bfhwlFVp6rse7kaGBUtuzG7RsJBJk3dT3qOXckpAO5X9PAA= 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: svcrdma: Reject connection when transport allocation fails handle_connect_req() returns without action when svc_rdma_create_xprt() fails to allocate the new transport. The CM core returns 0 for CONNECT_REQUEST events, so it does not destroy the new rdma_cm_id. Each allocation failure under memory pressure leaks one rdma_cm_id, and a remote peer driving connection attempts can amplify this. Reject the connection by returning a non-zero status from the CM event handler, which tells the CM core to destroy the orphaned cm_id. The Linux kernel CVE team has assigned CVE-2026-89531 to this issue. Affected and fixed versions =========================== Issue introduced in 2.6.25 with commit 377f9b2f4529e0ac702fd7b91e216afd0adc959e and fixed in 6.12.109 with commit 6e21754bbf75075f3fee1cebc79f3417364235ec Issue introduced in 2.6.25 with commit 377f9b2f4529e0ac702fd7b91e216afd0adc959e and fixed in 6.18.50 with commit 3cf372cec7ab2cd8c6002bf775cc14d90ccb098b Issue introduced in 2.6.25 with commit 377f9b2f4529e0ac702fd7b91e216afd0adc959e and fixed in 7.2.4 with commit 1f6a14c142fee4778c32709d1d54595c2e2b7991 Issue introduced in 2.6.25 with commit 377f9b2f4529e0ac702fd7b91e216afd0adc959e and fixed in 7.3-rc1 with commit 0944462247dcb7de7622cdaaadf5f05c52707dab 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-2026-89531 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/xprtrdma/svc_rdma_transport.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/6e21754bbf75075f3fee1cebc79f3417364235ec https://git.kernel.org/stable/c/3cf372cec7ab2cd8c6002bf775cc14d90ccb098b https://git.kernel.org/stable/c/1f6a14c142fee4778c32709d1d54595c2e2b7991 https://git.kernel.org/stable/c/0944462247dcb7de7622cdaaadf5f05c52707dab