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GET /api/1.2/patches/2221551/?format=api
{ "id": 2221551, "url": "http://patchwork.ozlabs.org/api/1.2/patches/2221551/?format=api", "web_url": "http://patchwork.ozlabs.org/project/uboot/patch/20260409164440.323405-1-sebasjosue84@gmail.com/", "project": { "id": 18, "url": "http://patchwork.ozlabs.org/api/1.2/projects/18/?format=api", "name": "U-Boot", "link_name": "uboot", "list_id": "u-boot.lists.denx.de", "list_email": "u-boot@lists.denx.de", "web_url": null, "scm_url": null, "webscm_url": null, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260409164440.323405-1-sebasjosue84@gmail.com>", "list_archive_url": null, "date": "2026-04-09T16:44:40", "name": "net: nfs: fix buffer overflow in nfs_readlink_reply()", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "f70dfd822b7df2626133af7e36614995ab729d81", "submitter": { "id": 92955, "url": "http://patchwork.ozlabs.org/api/1.2/people/92955/?format=api", "name": "Sebastian Alba Vives", "email": "sebasjosue84@gmail.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/uboot/patch/20260409164440.323405-1-sebasjosue84@gmail.com/mbox/", "series": [ { "id": 499340, "url": "http://patchwork.ozlabs.org/api/1.2/series/499340/?format=api", "web_url": "http://patchwork.ozlabs.org/project/uboot/list/?series=499340", "date": "2026-04-09T16:44:40", "name": "net: nfs: fix buffer overflow in nfs_readlink_reply()", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/499340/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2221551/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2221551/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<u-boot-bounces@lists.denx.de>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256\n header.s=20251104 header.b=ngQUpEaJ;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de\n (client-ip=2a01:238:438b:c500:173d:9f52:ddab:ee01; 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a=rsa-sha256; c=relaxed/relaxed;\n d=gmail.com; s=20251104; t=1775753095; x=1776357895; darn=lists.denx.de;\n h=content-transfer-encoding:mime-version:message-id:date:subject:cc\n :to:from:from:to:cc:subject:date:message-id:reply-to;\n bh=UszRydjgnil6xCBl66k6CnSI51I6E8fv26ecdhZ21os=;\n b=ngQUpEaJpY/WF5D/AWsTV69qXasMiMQMpnFdovbaeED6D+M5A64OJFJNGJGDrDDTYp\n 1Yxy7zc2oqw0oAyad1PfkQKJAZ7u04Ti2prMLvnIKYAugIlNQph79myULd/8kE3FcFQP\n HMt1cy2/H8SdO3TFOd0rO9W8dOT5sxYVqxltserHJaO41YuLEbt8cCEK9UCD/Bvzl5Nu\n xefG5KrRgBO1jj/zrjhQU35UHchVJwq2w/bsryxfX7PKHInCivzpG4FWJV79Rj8Yqjtp\n 62oouMrZoR/hybp+QQviIWBA1sT8twlZYuwh/VgdIzlMWn+gdgIavc6MrldFAag9huRO\n CmQA==", "X-Google-DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed;\n d=1e100.net; s=20251104; t=1775753095; x=1776357895;\n h=content-transfer-encoding:mime-version:message-id:date:subject:cc\n :to:from:x-gm-gg:x-gm-message-state:from:to:cc:subject:date\n :message-id:reply-to;\n bh=UszRydjgnil6xCBl66k6CnSI51I6E8fv26ecdhZ21os=;\n b=VQyMCvW/RParTZ6WIL9AcamkG9rdazHoksJWHpSzj6Ga3K1K8bjM3fn4pSLu0ftUz4\n +M3xLkdTKQuxyIFy84JlKjTOoGSnJ+j4KSoHfbXxu4gODtEd/u+vq+pvf2irj9K1mEB7\n rTa4KhC+fxPO4vOYwsCx/b8cayqj5CcOIqkm8672R5f5nM/I8i/4+grXRKSxtkg8HGLR\n EjVl5d+C326EpSHL5SqrXmfV+gC+1kZ2H6sDy+FTyJhgXwpJsjebCsDlUJHiml7n/Pt0\n GAg5L0KYqab3ncV9CRgJ583L0sF8XXgRjX/Yfh+vQQcLu2UcBWKTMS2pgB0B7adplt1j\n kmKQ==", "X-Gm-Message-State": "AOJu0YxsA2w4XhHImSnUtORM5OMPExgp+WrJtJ3gjHJlrOuvTYupoYq1\n 12LXggSFALR19ix50IE/ehPW6EZdUHS63/EeTvD/T3A4d0aE1xtzmt9sqx+bftqQ", "X-Gm-Gg": "AeBDieuv8OqoruChgNwgL4yX/VDbQRkcsdr/B2vR6zjezTKlWygVGDjJX8FjBzoDKt1\n aFP8xyjGsRVHlqogBVYrwG3r5R+ls7W8E+poQWEvWKu3jmQA5oLjJH8Iqp9AWDbunA6zRw1Bdqo\n WFcVSTazx+85R/0QM6hVPHev5qzs3GPaP5heldgA4pkCIx0DGq/fIoSwY2ScExFMNOiXICT2XYN\n 9chKDhaxJKvO7G3dSpoEia4NfGC2mPwNPn0On/hiVRc7Noiqe4ic0pQD5c4Jb20rXiYADpAOlVA\n uLN1sco/BNY2aQDvGvZU/r4T57d/wXrY0nizymt13BRVihD0KX6VF6oQ0t8dHFlftiRHjS/Q0zf\n MtwrWCDPSs7a/eR1ySsyOG9jorshitEtDnZdtsF9hy/Q4Dym+Zx253aOQu7IkB1i3Pq10bmi3W0\n ohj7m1zFYFRuzSxkKtZXitwhkiyg==", "X-Received": "by 2002:a05:6122:4d0f:b0:56e:f2cb:190b with SMTP id\n 71dfb90a1353d-56ef2cb2ab1mr8821130e0c.0.1775753095396;\n Thu, 09 Apr 2026 09:44:55 -0700 (PDT)", "From": "Sebastian Alba Vives <sebasjosue84@gmail.com>", "To": "u-boot@lists.denx.de", "Cc": "trini@konsulko.com, jerome.forissier@linaro.org, stable@vger.kernel.org,\n Sebastian Josue Alba Vives <sebasjosue84@gmail.com>", "Subject": "[PATCH] net: nfs: fix buffer overflow in nfs_readlink_reply()", "Date": "Thu, 9 Apr 2026 10:44:40 -0600", "Message-ID": "<20260409164440.323405-1-sebasjosue84@gmail.com>", "X-Mailer": "git-send-email 2.43.0", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "X-Mailman-Approved-At": "Thu, 09 Apr 2026 20:12:28 +0200", "X-BeenThere": "u-boot@lists.denx.de", "X-Mailman-Version": "2.1.39", "Precedence": "list", "List-Id": "U-Boot discussion <u-boot.lists.denx.de>", "List-Unsubscribe": "<https://lists.denx.de/options/u-boot>,\n <mailto:u-boot-request@lists.denx.de?subject=unsubscribe>", "List-Archive": "<https://lists.denx.de/pipermail/u-boot/>", "List-Post": "<mailto:u-boot@lists.denx.de>", "List-Help": "<mailto:u-boot-request@lists.denx.de?subject=help>", "List-Subscribe": "<https://lists.denx.de/listinfo/u-boot>,\n <mailto:u-boot-request@lists.denx.de?subject=subscribe>", "Errors-To": "u-boot-bounces@lists.denx.de", "Sender": "\"U-Boot\" <u-boot-bounces@lists.denx.de>", "X-Virus-Scanned": "clamav-milter 0.103.8 at phobos.denx.de", "X-Virus-Status": "Clean" }, "content": "From: Sebastian Josue Alba Vives <sebasjosue84@gmail.com>\n\nnfs_readlink_reply() validates rlen only against the incoming packet\nlength (inherited from CVE-2019-14195), but not against the destination\nbuffer nfs_path_buff[2048]. A malicious NFS server can send a valid\nREADLINK reply where pathlen + rlen exceeds sizeof(nfs_path_buff),\noverflowing the BSS buffer into adjacent memory.\n\nThe recent fix in fd6e3d34097f addressed the same overflow class in\nnet/lwip/nfs.c but left the legacy path in net/nfs-common.c unpatched.\n\nAdd bounds checks before both memcpy calls in nfs_readlink_reply():\n- relative path branch: reject if pathlen + rlen >= sizeof(nfs_path_buff)\n- absolute path branch: reject if rlen >= sizeof(nfs_path_buff)\n\nFixes: cf3a4f1e86 (\"net: nfs: Fix CVE-2019-14195\")\nCc: stable@vger.kernel.org\nSigned-off-by: Sebastian Alba Vives <sebasjosue84@gmail.com>\n---\n net/nfs-common.c | 4 ++++\n 1 file changed, 4 insertions(+)", "diff": "diff --git a/net/nfs-common.c b/net/nfs-common.c\nindex 4fbde67a..72d8fd82 100644\n--- a/net/nfs-common.c\n+++ b/net/nfs-common.c\n@@ -674,11 +674,15 @@ static int nfs_readlink_reply(uchar *pkt, unsigned int len)\n \n \t\tstrcat(nfs_path, \"/\");\n \t\tpathlen = strlen(nfs_path);\n+\t\tif (pathlen + rlen >= sizeof(nfs_path_buff))\n+\t\t\treturn -NFS_RPC_DROP;\n \t\tmemcpy(nfs_path + pathlen,\n \t\t (uchar *)&rpc_pkt.u.reply.data[2 + nfsv3_data_offset],\n \t\t rlen);\n \t\tnfs_path[pathlen + rlen] = 0;\n \t} else {\n+\t\tif (rlen >= sizeof(nfs_path_buff))\n+\t\t\treturn -NFS_RPC_DROP;\n \t\tmemcpy(nfs_path,\n \t\t (uchar *)&rpc_pkt.u.reply.data[2 + nfsv3_data_offset],\n \t\t rlen);\n", "prefixes": [] }