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GET /api/patches/2195037/?format=api
{ "id": 2195037, "url": "http://patchwork.ozlabs.org/api/patches/2195037/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260210121438.67781-14-mjt@tls.msk.ru/", "project": { "id": 14, "url": "http://patchwork.ozlabs.org/api/projects/14/?format=api", "name": "QEMU Development", "link_name": "qemu-devel", "list_id": "qemu-devel.nongnu.org", "list_email": "qemu-devel@nongnu.org", "web_url": "", "scm_url": "", "webscm_url": "", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260210121438.67781-14-mjt@tls.msk.ru>", "list_archive_url": null, "date": "2026-02-10T12:14:23", "name": "[Stable-10.2.1,70/78] cryptodev-builtin: Limit the maximum size", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "5df1a28c424993d8cadc900011c57995bedd6cf2", "submitter": { "id": 183, "url": "http://patchwork.ozlabs.org/api/people/183/?format=api", "name": "Michael Tokarev", "email": "mjt@tls.msk.ru" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260210121438.67781-14-mjt@tls.msk.ru/mbox/", "series": [ { "id": 491661, "url": "http://patchwork.ozlabs.org/api/series/491661/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=491661", "date": "2026-02-10T12:14:13", "name": "Patch Round-up for stable 10.2.1, freeze on 2026-02-10 (frozen)", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/491661/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2195037/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2195037/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; helo=lists.gnu.org;\n envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org;\n receiver=patchwork.ozlabs.org)", "Received": [ "from lists.gnu.org (lists.gnu.org [209.51.188.17])\n\t(using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits))\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4f9LCx2Q1Hz1xvb\n\tfor <incoming@patchwork.ozlabs.org>; Tue, 10 Feb 2026 23:17:17 +1100 (AEDT)", "from localhost ([::1] helo=lists1p.gnu.org)\n\tby lists.gnu.org with esmtp (Exim 4.90_1)\n\t(envelope-from <qemu-devel-bounces@nongnu.org>)\n\tid 1vpmeW-000151-TD; Tue, 10 Feb 2026 07:15:37 -0500", "from eggs.gnu.org ([2001:470:142:3::10])\n by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)\n (Exim 4.90_1) (envelope-from <mjt@tls.msk.ru>)\n id 1vpmeU-00014L-Db; Tue, 10 Feb 2026 07:15:34 -0500", "from isrv.corpit.ru ([212.248.84.144])\n by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)\n (Exim 4.90_1) (envelope-from <mjt@tls.msk.ru>)\n id 1vpmeS-0000HQ-AP; Tue, 10 Feb 2026 07:15:34 -0500", "from tsrv.corpit.ru (tsrv.tls.msk.ru [192.168.177.2])\n by isrv.corpit.ru (Postfix) with ESMTP id 81A56187DA8;\n Tue, 10 Feb 2026 15:13:52 +0300 (MSK)", "from think4mjt.tls.msk.ru (mjtthink.wg.tls.msk.ru [192.168.177.146])\n by tsrv.corpit.ru (Postfix) with ESMTP id 19E3B360CCA;\n Tue, 10 Feb 2026 15:14:48 +0300 (MSK)" ], "From": "Michael Tokarev <mjt@tls.msk.ru>", "To": "qemu-devel@nongnu.org", "Cc": "qemu-stable@nongnu.org, zhenwei pi <pizhenwei@tensorfer.com>,\n\t=?utf-8?b?7J207J6s7JiB?= <nakamurajames123@gmail.com>,\n zhenwei pi <zhenwei.pi@linux.dev>, \"Michael S. Tsirkin\" <mst@redhat.com>,\n Michael Tokarev <mjt@tls.msk.ru>", "Subject": "[Stable-10.2.1 70/78] cryptodev-builtin: Limit the maximum size", "Date": "Tue, 10 Feb 2026 15:14:23 +0300", "Message-ID": "<20260210121438.67781-14-mjt@tls.msk.ru>", "X-Mailer": "git-send-email 2.47.3", "In-Reply-To": "<qemu-stable-10.2.1-20260210151332@cover.tls.msk.ru>", "References": "<qemu-stable-10.2.1-20260210151332@cover.tls.msk.ru>", "MIME-Version": "1.0", "Content-Type": "text/plain; charset=UTF-8", "Content-Transfer-Encoding": "8bit", "Received-SPF": "pass client-ip=212.248.84.144; envelope-from=mjt@tls.msk.ru;\n helo=isrv.corpit.ru", "X-Spam_score_int": "-18", "X-Spam_score": "-1.9", "X-Spam_bar": "-", "X-Spam_report": "(-1.9 / 5.0 requ) BAYES_00=-1.9,\n RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001,\n SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no", "X-Spam_action": "no action", "X-BeenThere": "qemu-devel@nongnu.org", "X-Mailman-Version": "2.1.29", "Precedence": "list", "List-Id": "qemu development <qemu-devel.nongnu.org>", "List-Unsubscribe": "<https://lists.nongnu.org/mailman/options/qemu-devel>,\n <mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>", "List-Archive": "<https://lists.nongnu.org/archive/html/qemu-devel>", "List-Post": "<mailto:qemu-devel@nongnu.org>", "List-Help": "<mailto:qemu-devel-request@nongnu.org?subject=help>", "List-Subscribe": "<https://lists.nongnu.org/mailman/listinfo/qemu-devel>,\n <mailto:qemu-devel-request@nongnu.org?subject=subscribe>", "Errors-To": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org", "Sender": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org" }, "content": "From: zhenwei pi <pizhenwei@tensorfer.com>\n\nThis backend driver is used for demonstration purposes only, unlimited\nsize leads QEMU OOM.\n\nFixes: CVE-2025-14876\nFixes: 1653a5f3fc7 (\"cryptodev: introduce a new cryptodev backend\")\nReported-by: 이재영 <nakamurajames123@gmail.com>\nSigned-off-by: zhenwei pi <zhenwei.pi@linux.dev>\nReviewed-by: Michael S. Tsirkin <mst@redhat.com>\nSigned-off-by: Michael S. Tsirkin <mst@redhat.com>\nMessage-Id: <20251221024321.143196-3-zhenwei.pi@linux.dev>\n(cherry picked from commit 7b913094c703641a0442bb1d1165323a019c591c)\nSigned-off-by: Michael Tokarev <mjt@tls.msk.ru>", "diff": "diff --git a/backends/cryptodev-builtin.c b/backends/cryptodev-builtin.c\nindex 0414c01e06..55a3fbd27b 100644\n--- a/backends/cryptodev-builtin.c\n+++ b/backends/cryptodev-builtin.c\n@@ -53,6 +53,8 @@ typedef struct CryptoDevBackendBuiltinSession {\n \n #define CRYPTODEV_BUITLIN_MAX_AUTH_KEY_LEN 512\n #define CRYPTODEV_BUITLIN_MAX_CIPHER_KEY_LEN 64\n+/* demonstration purposes only, use a limited size to avoid QEMU OOM */\n+#define CRYPTODEV_BUITLIN_MAX_REQUEST_SIZE (1024 * 1024)\n \n struct CryptoDevBackendBuiltin {\n CryptoDevBackend parent_obj;\n@@ -98,12 +100,7 @@ static void cryptodev_builtin_init(\n 1u << QCRYPTODEV_BACKEND_SERVICE_TYPE_MAC;\n backend->conf.cipher_algo_l = 1u << VIRTIO_CRYPTO_CIPHER_AES_CBC;\n backend->conf.hash_algo = 1u << VIRTIO_CRYPTO_HASH_SHA1;\n- /*\n- * Set the Maximum length of crypto request.\n- * Why this value? Just avoid to overflow when\n- * memory allocation for each crypto request.\n- */\n- backend->conf.max_size = LONG_MAX - sizeof(CryptoDevBackendOpInfo);\n+ backend->conf.max_size = CRYPTODEV_BUITLIN_MAX_REQUEST_SIZE;\n backend->conf.max_cipher_key_len = CRYPTODEV_BUITLIN_MAX_CIPHER_KEY_LEN;\n backend->conf.max_auth_key_len = CRYPTODEV_BUITLIN_MAX_AUTH_KEY_LEN;\n cryptodev_builtin_init_akcipher(backend);\n", "prefixes": [ "Stable-10.2.1", "70/78" ] }