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GET /api/1.1/patches/2232040/?format=api
{ "id": 2232040, "url": "http://patchwork.ozlabs.org/api/1.1/patches/2232040/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-cifs-client/patch/20260502104836.2980415-1-jasonye247@163.com/", "project": { "id": 12, "url": "http://patchwork.ozlabs.org/api/1.1/projects/12/?format=api", "name": "Linux CIFS Client", "link_name": "linux-cifs-client", "list_id": "linux-cifs.vger.kernel.org", "list_email": "linux-cifs@vger.kernel.org", "web_url": "", "scm_url": "", "webscm_url": "" }, "msgid": "<20260502104836.2980415-1-jasonye247@163.com>", "date": "2026-05-02T10:48:36", "name": "[v2,2/2] smb/client: fix out-of-bounds read in symlink_data()", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "59d5f8337855fc1be054c9656e0de5758e7d39b4", "submitter": { "id": 93305, "url": "http://patchwork.ozlabs.org/api/1.1/people/93305/?format=api", "name": null, "email": "jasonye247@163.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-cifs-client/patch/20260502104836.2980415-1-jasonye247@163.com/mbox/", "series": [ { "id": 502521, "url": "http://patchwork.ozlabs.org/api/1.1/series/502521/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-cifs-client/list/?series=502521", "date": "2026-05-02T09:54:33", "name": "smb/client: fix out-of-bounds read", "version": 2, "mbox": "http://patchwork.ozlabs.org/series/502521/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2232040/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2232040/checks/", "tags": {}, "headers": { "Return-Path": "\n <linux-cifs+bounces-11356-incoming=patchwork.ozlabs.org@vger.kernel.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "linux-cifs@vger.kernel.org" ], "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=163.com header.i=@163.com header.a=rsa-sha256\n header.s=s110527 header.b=OvyxFG2b;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2600:3c04:e001:36c::12fc:5321; helo=tor.lore.kernel.org;\n envelope-from=linux-cifs+bounces-11356-incoming=patchwork.ozlabs.org@vger.kernel.org;\n receiver=patchwork.ozlabs.org)", "smtp.subspace.kernel.org;\n\tdkim=pass (1024-bit key) header.d=163.com header.i=@163.com\n header.b=\"OvyxFG2b\"", "smtp.subspace.kernel.org;\n arc=none smtp.client-ip=117.135.210.4", "smtp.subspace.kernel.org;\n dmarc=pass (p=none dis=none) header.from=163.com", "smtp.subspace.kernel.org;\n spf=pass smtp.mailfrom=163.com" ], "Received": [ "from tor.lore.kernel.org (tor.lore.kernel.org\n [IPv6:2600:3c04:e001:36c::12fc:5321])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519 server-signature ECDSA (secp384r1) server-digest SHA384)\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4g74Sd0mwdz1y04\n\tfor <incoming@patchwork.ozlabs.org>; Sat, 02 May 2026 20:50:41 +1000 (AEST)", "from smtp.subspace.kernel.org (conduit.subspace.kernel.org\n [100.90.174.1])\n\tby tor.lore.kernel.org (Postfix) with ESMTP id 03876300D60C\n\tfor <incoming@patchwork.ozlabs.org>; Sat, 2 May 2026 10:50:35 +0000 (UTC)", "from localhost.localdomain (localhost.localdomain [127.0.0.1])\n\tby smtp.subspace.kernel.org (Postfix) with ESMTP id 80F7732B9A8;\n\tSat, 2 May 2026 10:50:34 +0000 (UTC)", "from m16.mail.163.com (m16.mail.163.com [117.135.210.4])\n\t(using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))\n\t(No client certificate requested)\n\tby smtp.subspace.kernel.org (Postfix) with ESMTPS id 35203175A92;\n\tSat, 2 May 2026 10:50:29 +0000 (UTC)", "from Jason.localdomain (unknown [])\n\tby gzsmtp3 (Coremail) with SMTP id PigvCgAnCdCG1vVpdIkgCA--.1S2;\n\tSat, 02 May 2026 18:48:42 +0800 (CST)" ], "ARC-Seal": "i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116;\n\tt=1777719034; cv=none;\n b=YIZWEoC7Y6s0hm72SX7Uzrcgt5M+B0u9ugvIleJscnJjkHfrwg4Hd5EK+R29rHQfNcnw2f4cibsvs8OY4rfGfi++noDIryaazbSbRrwX8MCZr8TTjqEe7oVfLwaMmfaAMKegKfm2a/LEcRIk9F6n8rdgzobjEHVsF9phP/lvXsw=", "ARC-Message-Signature": "i=1; a=rsa-sha256; d=subspace.kernel.org;\n\ts=arc-20240116; t=1777719034; c=relaxed/simple;\n\tbh=mhYYZ9vTva19NiK8asZeIKwDHv16ORSkJPKHND2LXHA=;\n\th=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References:\n\t MIME-Version;\n b=DGGA+RVglSPDxoXOm1UmUPY31Vr3IZN4E2VcLXN0D0xkSYLuJqF2RHWGA7qNmqKlsBY4ccVI4xq/ppzHzuQALqf9GbQNswDGOlMNxl+W8Oe5bJ4BrSzuHp8tGiNxTAbOBMELccq6OV6HZRwo3xFDkEF5+el8MkcmvkBM/iLzpmQ=", "ARC-Authentication-Results": "i=1; smtp.subspace.kernel.org;\n dmarc=pass (p=none dis=none) header.from=163.com;\n spf=pass smtp.mailfrom=163.com;\n dkim=pass (1024-bit key) header.d=163.com header.i=@163.com\n header.b=OvyxFG2b; arc=none smtp.client-ip=117.135.210.4", "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=163.com;\n\ts=s110527; h=From:To:Subject:Date:Message-ID:MIME-Version; bh=+4\n\tKvS+6DzJ02CM67wXgXY+9spj1hGV5Zo99C3l9HjJI=; b=OvyxFG2b0D0ut8oqdO\n\tVw//tf4RvNeTF29oXYyehjyOK8AL1vro8GuRF0xjKJc7m1p/6aWcTokNQumu7sJY\n\tXkU9/yFyFoqFIXRyQbAsXywIRlHyUKcbxJtORO1MtpBJmWwRS2sV/GxQvDU+kl+S\n\tcTh9pr4iWZc8WR6tvLHMayWag=", "From": "jasonye247@163.com", "To": "smfrench@gmail.com,\n\tlinkinjeon@kernel.org,\n\tpc@manguebit.org,\n\tronniesahlberg@gmail.com,\n\tsprasad@microsoft.com,\n\ttom@talpey.com,\n\tbharathsm@microsoft.com,\n\tsenozhatsky@chromium.org,\n\tdhowells@redhat.com,\n\tchenxiaosong@chenxiaosong.com,\n\tgregkh@linuxfoundation.org", "Cc": "linux-cifs@vger.kernel.org,\n\tZisen Ye <zisenye@stu.xidian.edu.cn>,\n\tStable@vger.kernel.org,\n\tChenXiaoSong <chenxiaosong@kylinos.cn>", "Subject": "[PATCH v2 2/2] smb/client: fix out-of-bounds read in symlink_data()", "Date": "Sat, 2 May 2026 18:48:36 +0800", "Message-ID": "<20260502104836.2980415-1-jasonye247@163.com>", "X-Mailer": "git-send-email 2.43.0", "In-Reply-To": "<20260502095435.2969835-1-zisenye@stu.xidian.edu.cn>", "References": "<20260502095435.2969835-1-zisenye@stu.xidian.edu.cn>", "Precedence": "bulk", "X-Mailing-List": "linux-cifs@vger.kernel.org", "List-Id": "<linux-cifs.vger.kernel.org>", "List-Subscribe": "<mailto:linux-cifs+subscribe@vger.kernel.org>", "List-Unsubscribe": "<mailto:linux-cifs+unsubscribe@vger.kernel.org>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "X-CM-TRANSID": "PigvCgAnCdCG1vVpdIkgCA--.1S2", "X-Coremail-Antispam": "1Uf129KBjvJXoW7CF4xCryUJrWrArW7Cr1Dtrb_yoW8Xry5pF\n\t15GrZ8C3y3t3srAanrCF4jq3W8ua1DCr9rGFW7Ka48Ars8ArsY9FWktrn0ga4Sy340g3Wr\n\tXF1vvF9FvryjkFDanT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2\n\t9KBjDUYxBIdaVFxhVjvjDU0xZFpf9x07j53ktUUUUU=", "X-CM-SenderInfo": "pmdv00t1hskli6rwjhhfrp/xtbCzwuvPWn11osXmQAA3Z" }, "content": "From: Zisen Ye <zisenye@stu.xidian.edu.cn>\n\nSince smb2_check_message() returns success without length validation for\nthe symlink error response, in symlink_data() it is possible for\niov->iov_len to be smaller than sizeof(struct smb2_err_rsp). If the buffer\nonly contains the base SMB2 header (64 bytes), accessing\nerr->ErrorContextCount (at offset 66) or err->ByteCount later in\nsymlink_data() will cause an out-of-bounds read.\n\nLink: https://lore.kernel.org/linux-cifs/297d8d9b-adf7-42fd-a1c2-5b1f230032bc@chenxiaosong.com/\nFixes: 76894f3e2f71 (\"cifs: improve symlink handling for smb2+\")\nCc: Stable@vger.kernel.org\nSigned-off-by: Zisen Ye <zisenye@stu.xidian.edu.cn>\nReviewed-by: ChenXiaoSong <chenxiaosong@kylinos.cn>\n---\n fs/smb/client/smb2misc.c | 3 ++-\n 1 file changed, 2 insertions(+), 1 deletion(-)", "diff": "diff --git a/fs/smb/client/smb2misc.c b/fs/smb/client/smb2misc.c\nindex 973fce3c959c..2a7355ce1a07 100644\n--- a/fs/smb/client/smb2misc.c\n+++ b/fs/smb/client/smb2misc.c\n@@ -241,7 +241,8 @@ smb2_check_message(char *buf, unsigned int pdu_len, unsigned int len,\n \tif (len != calc_len) {\n \t\t/* create failed on symlink */\n \t\tif (command == SMB2_CREATE_HE &&\n-\t\t shdr->Status == STATUS_STOPPED_ON_SYMLINK)\n+\t\t shdr->Status == STATUS_STOPPED_ON_SYMLINK &&\n+\t\t len > calc_len)\n \t\t\treturn 0;\n \t\t/* Windows 7 server returns 24 bytes more */\n \t\tif (calc_len + 24 == len && command == SMB2_OPLOCK_BREAK_HE)\n", "prefixes": [ "v2", "2/2" ] }