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GET /api/patches/2227986/?format=api
{ "id": 2227986, "url": "http://patchwork.ozlabs.org/api/patches/2227986/?format=api", "web_url": "http://patchwork.ozlabs.org/project/ubuntu-kernel/patch/20260424164150.3658854-2-tim.whisonant@canonical.com/", "project": { "id": 15, "url": "http://patchwork.ozlabs.org/api/projects/15/?format=api", "name": "Ubuntu Kernel", "link_name": "ubuntu-kernel", "list_id": "kernel-team.lists.ubuntu.com", "list_email": "kernel-team@lists.ubuntu.com", "web_url": null, "scm_url": null, "webscm_url": null, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260424164150.3658854-2-tim.whisonant@canonical.com>", "list_archive_url": null, "date": "2026-04-24T16:41:47", "name": "[SRU,J/N/Q,1/1] netfilter: ipset: drop logically empty buckets in mtype_del", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "6b98140112da2bc75a86227f71ebab03e8861487", "submitter": { "id": 89903, "url": "http://patchwork.ozlabs.org/api/people/89903/?format=api", "name": "Tim Whisonant", "email": "tim.whisonant@canonical.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/ubuntu-kernel/patch/20260424164150.3658854-2-tim.whisonant@canonical.com/mbox/", "series": [ { "id": 501394, "url": "http://patchwork.ozlabs.org/api/series/501394/?format=api", "web_url": "http://patchwork.ozlabs.org/project/ubuntu-kernel/list/?series=501394", "date": "2026-04-24T16:41:46", "name": "CVE-2026-31418", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/501394/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2227986/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2227986/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<kernel-team-bounces@lists.ubuntu.com>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=fail reason=\"signature verification failed\" (4096-bit key;\n unprotected) header.d=canonical.com header.i=@canonical.com\n header.a=rsa-sha256 header.s=20251003 header.b=NI8tXzEC;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.ubuntu.com\n (client-ip=185.125.189.65; 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a=rsa-sha256; c=relaxed/relaxed;\n d=1e100.net; s=20251104; t=1777048918; x=1777653718;\n h=content-transfer-encoding:mime-version:references:in-reply-to\n :message-id:date:subject:to:from:x-gm-gg:x-gm-message-state:from:to\n :cc:subject:date:message-id:reply-to;\n bh=b1UQrldmI8ihMBG2suDiFfXB5PVEFpSmZZQlg+fu8D4=;\n b=LtdlPDaSncZwnr5XjYiIrY4daSm/5OI6rwavdvlgyxD6QwLIcBy4LTpfrBt5wfiJnk\n idkxozgVn/Ip6VX4WcMd/VEz3heTit4oBHOgGhiccaDX+ulxpA3Zf8kQpt6Ag5j71q+D\n BWqJwfASU89LYmo5z69q4ME6g8P5Z5JiFOjiGWpHFAIsJc2CyfMY0jsrH7VGOfZ6VryC\n DANpbPvs79o/0+daIICRZTZVRL6wK08kMsNp8qw9OeHQ8QCeLNUf6Hwd79FyufoDEKgC\n tTExnEgVCrvqSsZz5QKhdHWNWmG/j0x1WiBAfW1Eajk4LB4F3KPVoUwMU3MDN7Zzpydg\n p4VA==", "X-Gm-Message-State": "AOJu0YwuXNHhLR2nieumyCtbFX9J6T7K2SL11w1fVw0bla9wQ30Nr3JR\n lt5JhhoMFpSyIrhFkujlTs3+g9D6JYHQb3WzXNaSYW2hhiFHUHj2v6Ofvq0Y7szEZukOunD/JII\n g/90nuuYUKFS4FAPOegqVR3QRt2sDOJ9u79JIulzYH4HJdUoVZrFgMskYxiGsjezmRNu9WTNIM8\n Mx8+2ID2E6v1BqTQ==", "X-Gm-Gg": "AeBDievYBncC3PzRASxOmrRfGQoa+8R1GeHz1t5B/vFcZp6WRJcRFfSpzfHoEEUm88f\n kvWsUqV09Nzkjw6paPnec+loRwljWwgivRXPBkXwmtXY3Fq+xjrNx3iwH6QUzEV8j+OxkRZi7hw\n z5VgyjEhKRSEinrF5gEsdktRwpI9ZgDBFlgIk2+RMxPbDdHUu6Ql3v2n4I6ALF47/Rz+IR70Ajb\n bJ+1f9deWcKvpiIqk2BLH6S6zJuzSDLnDxyLVfCzIgXM7lzEHLSutQ98qeL2xN02rF3icM0HUh8\n JMnOUqGD4gVKs0J/mKLJpbotn0yX69RUodZUd6cuPJV24wW41afljxypjR7y8nDSpkE2V2b4XBy\n r71QDpdMckVJB0pLVWUtPLSuYihA8Ax82jr+swFHsQKUAULa48obL13say0fr8ueYJRPN7mAtUz\n OqT5zyR+bhORPo", "X-Received": [ "by 2002:a05:6830:4124:b0:7dc:cba3:e8f2 with SMTP id\n 46e09a7af769-7dccba3fd81mr13886439a34.19.1777048918636;\n Fri, 24 Apr 2026 09:41:58 -0700 (PDT)", "by 2002:a05:6830:4124:b0:7dc:cba3:e8f2 with SMTP id\n 46e09a7af769-7dccba3fd81mr13886421a34.19.1777048918161;\n Fri, 24 Apr 2026 09:41:58 -0700 (PDT)" ], "From": "Tim Whisonant <tim.whisonant@canonical.com>", "To": "kernel-team@lists.ubuntu.com", "Subject": "[SRU][J/N/Q][PATCH 1/1] netfilter: ipset: drop logically empty\n buckets in mtype_del", "Date": "Fri, 24 Apr 2026 09:41:47 -0700", "Message-ID": "<20260424164150.3658854-2-tim.whisonant@canonical.com>", "X-Mailer": "git-send-email 2.43.0", "In-Reply-To": "<20260424164150.3658854-1-tim.whisonant@canonical.com>", "References": "<20260424164150.3658854-1-tim.whisonant@canonical.com>", "MIME-Version": "1.0", "X-BeenThere": "kernel-team@lists.ubuntu.com", "X-Mailman-Version": "2.1.20", "Precedence": "list", "List-Id": "Kernel team discussions <kernel-team.lists.ubuntu.com>", "List-Unsubscribe": "<https://lists.ubuntu.com/mailman/options/kernel-team>,\n <mailto:kernel-team-request@lists.ubuntu.com?subject=unsubscribe>", "List-Archive": "<https://lists.ubuntu.com/archives/kernel-team>", "List-Post": "<mailto:kernel-team@lists.ubuntu.com>", "List-Help": "<mailto:kernel-team-request@lists.ubuntu.com?subject=help>", "List-Subscribe": "<https://lists.ubuntu.com/mailman/listinfo/kernel-team>,\n <mailto:kernel-team-request@lists.ubuntu.com?subject=subscribe>", "Content-Type": "text/plain; charset=\"utf-8\"", "Content-Transfer-Encoding": "base64", "Errors-To": "kernel-team-bounces@lists.ubuntu.com", "Sender": "\"kernel-team\" <kernel-team-bounces@lists.ubuntu.com>" }, "content": "From: Yifan Wu <yifanwucs@gmail.com>\n\nmtype_del() counts empty slots below n->pos in k, but it only drops the\nbucket when both n->pos and k are zero. This misses buckets whose live\nentries have all been removed while n->pos still points past deleted slots.\n\nTreat a bucket as empty when all positions below n->pos are unused and\nrelease it directly instead of shrinking it further.\n\nFixes: 8af1c6fbd923 (\"netfilter: ipset: Fix forceadd evaluation path\")\nCc: stable@vger.kernel.org\nReported-by: Juefei Pu <tomapufckgml@gmail.com>\nReported-by: Xin Liu <dstsmallbird@foxmail.com>\nSigned-off-by: Yifan Wu <yifanwucs@gmail.com>\nCo-developed-by: Yuan Tan <yuantan098@gmail.com>\nSigned-off-by: Yuan Tan <yuantan098@gmail.com>\nReviewed-by: Phil Sutter <phil@nwl.cc>\nSigned-off-by: Pablo Neira Ayuso <pablo@netfilter.org>\n(cherry picked from commit 9862ef9ab0a116c6dca98842aab7de13a252ae02)\nCVE-2026-31418\nSigned-off-by: Tim Whisonant <tim.whisonant@canonical.com>\n---\n net/netfilter/ipset/ip_set_hash_gen.h | 2 +-\n 1 file changed, 1 insertion(+), 1 deletion(-)", "diff": "diff --git a/net/netfilter/ipset/ip_set_hash_gen.h b/net/netfilter/ipset/ip_set_hash_gen.h\nindex 1f9ca5040982d..da7956e2f8d89 100644\n--- a/net/netfilter/ipset/ip_set_hash_gen.h\n+++ b/net/netfilter/ipset/ip_set_hash_gen.h\n@@ -1086,7 +1086,7 @@ mtype_del(struct ip_set *set, void *value, const struct ip_set_ext *ext,\n \t\t\tif (!test_bit(i, n->used))\n \t\t\t\tk++;\n \t\t}\n-\t\tif (n->pos == 0 && k == 0) {\n+\t\tif (k == n->pos) {\n \t\t\tt->hregion[r].ext_size -= ext_size(n->size, dsize);\n \t\t\trcu_assign_pointer(hbucket(t, key), NULL);\n \t\t\tkfree_rcu(n, rcu);\n", "prefixes": [ "SRU", "J/N/Q", "1/1" ] }