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GET /api/1.2/patches/2222607/?format=api
{ "id": 2222607, "url": "http://patchwork.ozlabs.org/api/1.2/patches/2222607/?format=api", "web_url": "http://patchwork.ozlabs.org/project/netfilter-devel/patch/20260413073105.2990210-1-1468888505@139.com/", "project": { "id": 26, "url": "http://patchwork.ozlabs.org/api/1.2/projects/26/?format=api", "name": "Netfilter Development", "link_name": "netfilter-devel", "list_id": "netfilter-devel.vger.kernel.org", "list_email": "netfilter-devel@vger.kernel.org", "web_url": null, "scm_url": null, "webscm_url": null, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260413073105.2990210-1-1468888505@139.com>", "list_archive_url": null, "date": "2026-04-13T07:31:05", "name": "[6.12.y] netfilter: conntrack: add missing netlink policy validations", "commit_ref": null, "pull_url": null, "state": "not-applicable", "archived": true, "hash": "dcbb8450e796e40025c11564a41a8c78844671cd", "submitter": { "id": 92514, "url": "http://patchwork.ozlabs.org/api/1.2/people/92514/?format=api", "name": "Li hongliang", "email": "1468888505@139.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/netfilter-devel/patch/20260413073105.2990210-1-1468888505@139.com/mbox/", "series": [ { "id": 499657, "url": "http://patchwork.ozlabs.org/api/1.2/series/499657/?format=api", "web_url": "http://patchwork.ozlabs.org/project/netfilter-devel/list/?series=499657", "date": "2026-04-13T07:31:05", "name": "[6.12.y] netfilter: conntrack: add missing netlink policy validations", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/499657/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2222607/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2222607/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <netfilter-devel+bounces-11840-incoming=patchwork.ozlabs.org@vger.kernel.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "netfilter-devel@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=139.com header.i=@139.com header.a=rsa-sha256\n header.s=dkim header.b=qQaMmMcp;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=104.64.211.4; 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smtp.subspace.kernel.org;\n dmarc=none (p=none dis=none) header.from=139.com;\n spf=pass smtp.mailfrom=139.com;\n dkim=pass (1024-bit key) header.d=139.com header.i=@139.com\n header.b=qQaMmMcp; arc=none smtp.client-ip=120.232.169.111", "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed;\n\td=139.com; s=dkim; l=0;\n\th=from:subject:message-id:to:cc:mime-version;\n\tbh=47DEQpj8HBSa+/TImW+5JCeuQeRkm5NMpJWZG3hSuFU=;\n\tb=qQaMmMcpmhrOyLVt+UcXfuamFbGCHqy2bsfNiyFJ3axIZgV/OKtZbZ0dZOzWtKWNqVtbPCkU/9l0g\n\t kbhMszL2hnbpar21iqRGufUkcZ/Oijrh7KhdCaJyGU3pkYW9+qrbo6LUCyYDwVGq94u2D2Mr5JNFf1\n\t iFA2xTGBo62Qh2zc=", "X-RM-TagInfo": "emlType=0 ", "X-RM-SPAM": "", "X-RM-SPAM-FLAG": "00000000", "X-RM-TRANSID": "2f3869dc9bb6403-0141d", "From": "Li hongliang <1468888505@139.com>", "To": "gregkh@linuxfoundation.org,\n\tstable@vger.kernel.org,\n\tfw@strlen.de", "Cc": "patches@lists.linux.dev,\n\tlinux-kernel@vger.kernel.org,\n\tpablo@netfilter.org,\n\tkadlec@netfilter.org,\n\tdavem@davemloft.net,\n\tedumazet@google.com,\n\tkuba@kernel.org,\n\tpabeni@redhat.com,\n\thorms@kernel.org,\n\tkaber@trash.net,\n\tnetfilter-devel@vger.kernel.org,\n\tcoreteam@netfilter.org,\n\tnetdev@vger.kernel.org,\n\timv4bel@gmail.com", "Subject": "[PATCH 6.12.y] netfilter: conntrack: add missing netlink policy\n validations", "Date": "Mon, 13 Apr 2026 15:31:05 +0800", "Message-Id": "<20260413073105.2990210-1-1468888505@139.com>", "X-Mailer": "git-send-email 2.34.1", "Precedence": "bulk", "X-Mailing-List": "netfilter-devel@vger.kernel.org", "List-Id": "<netfilter-devel.vger.kernel.org>", "List-Subscribe": "<mailto:netfilter-devel+subscribe@vger.kernel.org>", "List-Unsubscribe": "<mailto:netfilter-devel+unsubscribe@vger.kernel.org>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit" }, "content": "From: Florian Westphal <fw@strlen.de>\n\n[ Upstream commit f900e1d77ee0ef87bfb5ab3fe60f0b3d8ad5ba05 ]\n\nHyunwoo Kim reports out-of-bounds access in sctp and ctnetlink.\n\nThese attributes are used by the kernel without any validation.\nExtend the netlink policies accordingly.\n\nQuoting the reporter:\n nlattr_to_sctp() assigns the user-supplied CTA_PROTOINFO_SCTP_STATE\n value directly to ct->proto.sctp.state without checking that it is\n within the valid range. [..]\n\n and: ... with exp->dir = 100, the access at\n ct->master->tuplehash[100] reads 5600 bytes past the start of a\n 320-byte nf_conn object, causing a slab-out-of-bounds read confirmed by\n UBSAN.\n\nFixes: 076a0ca02644 (\"netfilter: ctnetlink: add NAT support for expectations\")\nFixes: a258860e01b8 (\"netfilter: ctnetlink: add full support for SCTP to ctnetlink\")\nReported-by: Hyunwoo Kim <imv4bel@gmail.com>\nSigned-off-by: Florian Westphal <fw@strlen.de>\nSigned-off-by: Li hongliang <1468888505@139.com>\n---\n net/netfilter/nf_conntrack_netlink.c | 2 +-\n net/netfilter/nf_conntrack_proto_sctp.c | 3 ++-\n 2 files changed, 3 insertions(+), 2 deletions(-)", "diff": "diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c\nindex 323e147fe282..f51cdfba68fb 100644\n--- a/net/netfilter/nf_conntrack_netlink.c\n+++ b/net/netfilter/nf_conntrack_netlink.c\n@@ -3460,7 +3460,7 @@ ctnetlink_change_expect(struct nf_conntrack_expect *x,\n \n #if IS_ENABLED(CONFIG_NF_NAT)\n static const struct nla_policy exp_nat_nla_policy[CTA_EXPECT_NAT_MAX+1] = {\n-\t[CTA_EXPECT_NAT_DIR]\t= { .type = NLA_U32 },\n+\t[CTA_EXPECT_NAT_DIR]\t= NLA_POLICY_MAX(NLA_BE32, IP_CT_DIR_REPLY),\n \t[CTA_EXPECT_NAT_TUPLE]\t= { .type = NLA_NESTED },\n };\n #endif\ndiff --git a/net/netfilter/nf_conntrack_proto_sctp.c b/net/netfilter/nf_conntrack_proto_sctp.c\nindex 4cc97f971264..fabb2c1ca00a 100644\n--- a/net/netfilter/nf_conntrack_proto_sctp.c\n+++ b/net/netfilter/nf_conntrack_proto_sctp.c\n@@ -587,7 +587,8 @@ static int sctp_to_nlattr(struct sk_buff *skb, struct nlattr *nla,\n }\n \n static const struct nla_policy sctp_nla_policy[CTA_PROTOINFO_SCTP_MAX+1] = {\n-\t[CTA_PROTOINFO_SCTP_STATE]\t = { .type = NLA_U8 },\n+\t[CTA_PROTOINFO_SCTP_STATE]\t = NLA_POLICY_MAX(NLA_U8,\n+\t\t\t\t\t\t\t SCTP_CONNTRACK_HEARTBEAT_SENT),\n \t[CTA_PROTOINFO_SCTP_VTAG_ORIGINAL] = { .type = NLA_U32 },\n \t[CTA_PROTOINFO_SCTP_VTAG_REPLY] = { .type = NLA_U32 },\n };\n", "prefixes": [ "6.12.y" ] }