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GET /api/1.2/patches/2223310/?format=api
{ "id": 2223310, "url": "http://patchwork.ozlabs.org/api/1.2/patches/2223310/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260415012336.964736-1-zhaoguohan@kylinos.cn/", "project": { "id": 14, "url": "http://patchwork.ozlabs.org/api/1.2/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": "<20260415012336.964736-1-zhaoguohan@kylinos.cn>", "list_archive_url": null, "date": "2026-04-15T01:23:36", "name": "ui/vnc-clipboard: validate decompressed text length", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "d07347617c5b302e7a73135f13cc99666af31615", "submitter": { "id": 92952, "url": "http://patchwork.ozlabs.org/api/1.2/people/92952/?format=api", "name": "GuoHan Zhao", "email": "zhaoguohan@kylinos.cn" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260415012336.964736-1-zhaoguohan@kylinos.cn/mbox/", "series": [ { "id": 499903, "url": "http://patchwork.ozlabs.org/api/1.2/series/499903/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=499903", "date": "2026-04-15T01:23:36", "name": "ui/vnc-clipboard: validate decompressed text length", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/499903/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2223310/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2223310/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=lists1p.gnu.org;\n envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org;\n receiver=patchwork.ozlabs.org)", "Received": [ "from lists1p.gnu.org (lists1p.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 4fwNkF18sSz1yCv\n\tfor <incoming@patchwork.ozlabs.org>; Wed, 15 Apr 2026 11:25:23 +1000 (AEST)", "from localhost ([::1] helo=lists1p.gnu.org)\n\tby lists1p.gnu.org with esmtp (Exim 4.90_1)\n\t(envelope-from <qemu-devel-bounces@nongnu.org>)\n\tid 1wCozd-0003zg-BR; Tue, 14 Apr 2026 21:24:37 -0400", "from eggs.gnu.org ([2001:470:142:3::10])\n by lists1p.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)\n (Exim 4.90_1) (envelope-from <zhaoguohan@kylinos.cn>)\n id 1wCozX-0003z4-Oi\n for qemu-devel@nongnu.org; Tue, 14 Apr 2026 21:24:32 -0400", "from mailgw.kylinos.cn ([124.126.103.232])\n by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)\n (Exim 4.90_1) (envelope-from <zhaoguohan@kylinos.cn>)\n id 1wCozU-0007sT-TJ\n for qemu-devel@nongnu.org; Tue, 14 Apr 2026 21:24:31 -0400", "from localhost.localdomain [(116.128.244.171)] by mailgw.kylinos.cn\n (envelope-from <zhaoguohan@kylinos.cn>)\n (Generic MTA with TLSv1.3 TLS_AES_256_GCM_SHA384 256/256)\n with ESMTP id 1546656504; Wed, 15 Apr 2026 09:24:09 +0800" ], "X-UUID": [ "cdaa65d8386911f1aa26b74ffac11d73-20260415", "cdaa65d8386911f1aa26b74ffac11d73-20260415" ], "X-CID-O-RULE": "Release_Ham", "X-CID-RULE": "Release_Ham", "X-CID-O-INFO": "VERSION:1.3.12, REQID:838ace5f-8f5c-4dc6-a8c8-f8f6d1ca7cc3,\n IP:15,\n URL:0,TC:0,Content:0,EDM:0,RT:0,SF:-15,FILE:0,BULK:0,RULE:Release_Ham,ACTI\n ON:release,TS:0", "X-CID-INFO": "VERSION:1.3.12, REQID:838ace5f-8f5c-4dc6-a8c8-f8f6d1ca7cc3, IP:15,\n UR\n L:0,TC:0,Content:0,EDM:0,RT:0,SF:-15,FILE:0,BULK:0,RULE:Release_Ham,ACTION\n :release,TS:0", "X-CID-META": "VersionHash:e7bac3a, CLOUDID:a73e5dc2a6387b21f940792dbf995a6c,\n BulkI\n D:260415092410WP6HJ0RW,BulkQuantity:0,Recheck:0,SF:10|66|78|101|102|123|12\n 7|850|898,TC:nil,Content:0|15|50,EDM:-3,IP:-2,URL:0,File:nil,RT:nil,Bulk:n\n il,QS:nil,BEC:nil,COL:0,OSI:0,OSA:0,AV:0,LES:1,SPR:NO,DKR:0,DKP:0,BRR:0,BR\n E:0,ARC:0", "X-CID-BVR": "2,SSN|SDN", "X-CID-BAS": "2,SSN|SDN,0,_", "X-CID-FACTOR": "TF_CID_SPAM_SNR", "X-CID-RHF": "D41D8CD98F00B204E9800998ECF8427E", "X-User": "zhaoguohan@kylinos.cn", "From": "zhaoguohan@kylinos.cn", "To": "=?utf-8?q?Marc-Andr=C3=A9_Lureau?= <marcandre.lureau@redhat.com>", "Cc": "qemu-devel@nongnu.org", "Subject": "[PATCH] ui/vnc-clipboard: validate decompressed text length", "Date": "Wed, 15 Apr 2026 09:23:36 +0800", "Message-ID": "<20260415012336.964736-1-zhaoguohan@kylinos.cn>", "X-Mailer": "git-send-email 2.43.0", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "Received-SPF": "pass client-ip=124.126.103.232;\n envelope-from=zhaoguohan@kylinos.cn; helo=mailgw.kylinos.cn", "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,\n UNPARSEABLE_RELAY=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: GuoHan Zhao <zhaoguohan@kylinos.cn>\n\nThe decompressed clipboard data starts with a 32-bit text length.\nCheck that the advertised length fits in the payload after that\nheader before passing it to qemu_clipboard_set_data().\n\nOtherwise a malformed VNC clipboard message can make QEMU read past\nthe end of the decompressed buffer.\n\nFixes: 0bf41cab93e5 (\"ui/vnc: clipboard support\")\nSigned-off-by: GuoHan Zhao <zhaoguohan@kylinos.cn>\n---\n ui/vnc-clipboard.c | 4 ++--\n 1 file changed, 2 insertions(+), 2 deletions(-)", "diff": "diff --git a/ui/vnc-clipboard.c b/ui/vnc-clipboard.c\nindex 124b6fbd9c23..85851a632dba 100644\n--- a/ui/vnc-clipboard.c\n+++ b/ui/vnc-clipboard.c\n@@ -281,8 +281,8 @@ void vnc_client_cut_text_ext(VncState *vs, int32_t len, uint32_t flags, uint8_t\n if ((flags & VNC_CLIPBOARD_TEXT) &&\n buf && size >= 4) {\n uint32_t tsize = read_u32(buf, 0);\n- uint8_t *tbuf = buf + 4;\n- if (tsize < size) {\n+ uint8_t *tbuf = buf + sizeof(tsize);\n+ if (tsize <= size - sizeof(tsize)) {\n qemu_clipboard_set_data(&vs->cbpeer, vs->cbinfo,\n QEMU_CLIPBOARD_TYPE_TEXT,\n tsize, tbuf, true);\n", "prefixes": [] }