{
    "document": {
        "category": "csaf_base",
        "csaf_version": "2.0",
        "distribution": {
            "tlp": {
                "label": "WHITE"
            }
        },
        "lang": "en",
        "notes": [
            {
                "category": "legal_disclaimer",
                "text": "The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this portal to enhance access to its information and vulnerabilities. The use of this information is subject to the following terms and conditions:\n\nThe vulnerabilities disclosed in this portal are gathered by NCSC-NL from a variety of open sources, which the user can retrieve from other platforms. NCSC-NL makes every reasonable effort to ensure that the content of this portal is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or real-time keeping up-to-date. NCSC-NL does not control nor guarantee the accuracy, relevance, timeliness or completeness of information obtained from these external sources. The vulnerabilities disclosed in this portal are intended solely for the convenience of professional parties to take appropriate measures to manage the risks posed to the cybersecurity. No rights can be derived from the information provided therein.\n\nNCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of the vulnerabilities disclosed in this portal. This includes damage resulting from the inaccuracy of incompleteness of the information contained in it.\nThe information on this page is subject to Dutch law. All disputes related to or arising from the use of this portal regarding the disclosure of vulnerabilities will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings."
            }
        ],
        "publisher": {
            "category": "coordinator",
            "contact_details": "cert@ncsc.nl",
            "name": "National Cyber Security Centre",
            "namespace": "https://www.ncsc.nl/"
        },
        "title": "CVE-2026-23399",
        "tracking": {
            "current_release_date": "2026-03-31T12:48:23.406003Z",
            "generator": {
                "date": "2026-02-17T15:00:00Z",
                "engine": {
                    "name": "V.E.L.M.A",
                    "version": "1.7"
                }
            },
            "id": "CVE-2026-23399",
            "initial_release_date": "2026-03-28T07:42:33.641916Z",
            "revision_history": [
                {
                    "date": "2026-03-28T07:42:33.641916Z",
                    "number": "1",
                    "summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| Products created (4).| Products connected (6).| References created (4)."
                },
                {
                    "date": "2026-03-28T07:42:43.592091Z",
                    "number": "2",
                    "summary": "NCSC Score created."
                },
                {
                    "date": "2026-03-28T08:24:42.147252Z",
                    "number": "3",
                    "summary": "Source created.| CVE status created. (valid)| Description created for source.| References created (4)."
                },
                {
                    "date": "2026-03-28T10:27:19.609321Z",
                    "number": "4",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-03-28T11:35:00.005279Z",
                    "number": "5",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-03-28T18:44:02.334041Z",
                    "number": "6",
                    "summary": "Source created.| CVE status created. (valid)| Products connected (2)."
                },
                {
                    "date": "2026-03-28T18:44:05.498334Z",
                    "number": "7",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-03-29T01:00:08.931374Z",
                    "number": "8",
                    "summary": "Source connected.| CVE status created. (valid)| EPSS created."
                },
                {
                    "date": "2026-03-29T06:43:59.484371Z",
                    "number": "9",
                    "summary": "Description created for source."
                },
                {
                    "date": "2026-03-29T12:19:52.727625Z",
                    "number": "10",
                    "summary": "Source connected.| CVE status created. (valid)| Description created for source.| Products connected (1)."
                },
                {
                    "date": "2026-03-29T12:20:05.775625Z",
                    "number": "11",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-03-29T12:27:39.355533Z",
                    "number": "12",
                    "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (13).| Product Identifiers created (5).| References created (3).| CWES updated (1).| Vendor_assessment created."
                },
                {
                    "date": "2026-03-29T12:27:50.640692Z",
                    "number": "13",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-03-30T12:07:01.675921Z",
                    "number": "14",
                    "summary": "Source created.| CVE status created. (valid)| Products connected (1).| Product Identifiers created (1).| References created (5)."
                },
                {
                    "date": "2026-03-30T12:07:07.609971Z",
                    "number": "15",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-03-31T12:19:49.865708Z",
                    "number": "16",
                    "summary": "CVSS created."
                },
                {
                    "date": "2026-03-31T12:19:52.788561Z",
                    "number": "17",
                    "summary": "NCSC Score updated."
                }
            ],
            "status": "interim",
            "version": "17"
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    "vulnerabilities": [
        {
            "cve": "CVE-2026-23399",
            "cwe": {
                "id": "CWE-772",
                "name": "Missing Release of Resource after Effective Lifetime"
            },
            "notes": [
                {
                    "category": "description",
                    "text": "In the Linux kernel, the following vulnerability has been resolved:\n\nnf_tables: nft_dynset: fix possible stateful expression memleak in error path\n\nIf cloning the second stateful expression in the element via GFP_ATOMIC\nfails, then the first stateful expression remains in place without being\nreleased.\n\n   unreferenced object (percpu) 0x607b97e9cab8 (size 16):\n     comm \"softirq\", pid 0, jiffies 4294931867\n     hex dump (first 16 bytes on cpu 3):\n       00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00\n     backtrace (crc 0):\n       pcpu_alloc_noprof+0x453/0xd80\n       nft_counter_clone+0x9c/0x190 [nf_tables]\n       nft_expr_clone+0x8f/0x1b0 [nf_tables]\n       nft_dynset_new+0x2cb/0x5f0 [nf_tables]\n       nft_rhash_update+0x236/0x11c0 [nf_tables]\n       nft_dynset_eval+0x11f/0x670 [nf_tables]\n       nft_do_chain+0x253/0x1700 [nf_tables]\n       nft_do_chain_ipv4+0x18d/0x270 [nf_tables]\n       nf_hook_slow+0xaa/0x1e0\n       ip_local_deliver+0x209/0x330",
                    "title": "cveprojectv5 - https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/23xxx/CVE-2026-23399.json"
                },
                {
                    "category": "description",
                    "text": "In the Linux kernel, the following vulnerability has been resolved:\n\nnf_tables: nft_dynset: fix possible stateful expression memleak in error path\n\nIf cloning the second stateful expression in the element via GFP_ATOMIC\nfails, then the first stateful expression remains in place without being\nreleased.\n\n   unreferenced object (percpu) 0x607b97e9cab8 (size 16):\n     comm \"softirq\", pid 0, jiffies 4294931867\n     hex dump (first 16 bytes on cpu 3):\n       00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00\n     backtrace (crc 0):\n       pcpu_alloc_noprof+0x453/0xd80\n       nft_counter_clone+0x9c/0x190 [nf_tables]\n       nft_expr_clone+0x8f/0x1b0 [nf_tables]\n       nft_dynset_new+0x2cb/0x5f0 [nf_tables]\n       nft_rhash_update+0x236/0x11c0 [nf_tables]\n       nft_dynset_eval+0x11f/0x670 [nf_tables]\n       nft_do_chain+0x253/0x1700 [nf_tables]\n       nft_do_chain_ipv4+0x18d/0x270 [nf_tables]\n       nf_hook_slow+0xaa/0x1e0\n       ip_local_deliver+0x209/0x330",
                    "title": "nvd - https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-23399"
                },
                {
                    "category": "description",
                    "text": "In the Linux kernel, the following vulnerability has been resolved:  nf_tables: nft_dynset: fix possible stateful expression memleak in error path  If cloning the second stateful expression in the element via GFP_ATOMIC fails, then the first stateful expression remains in place without being released.     unreferenced object (percpu) 0x607b97e9cab8 (size 16):      comm \"softirq\", pid 0, jiffies 4294931867      hex dump (first 16 bytes on cpu 3):        00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00      backtrace (crc 0):        pcpu_alloc_noprof+0x453/0xd80        nft_counter_clone+0x9c/0x190 [nf_tables]        nft_expr_clone+0x8f/0x1b0 [nf_tables]        nft_dynset_new+0x2cb/0x5f0 [nf_tables]        nft_rhash_update+0x236/0x11c0 [nf_tables]        nft_dynset_eval+0x11f/0x670 [nf_tables]        nft_do_chain+0x253/0x1700 [nf_tables]        nft_do_chain_ipv4+0x18d/0x270 [nf_tables]        nf_hook_slow+0xaa/0x1e0        ip_local_deliver+0x209/0x330",
                    "title": "debian - https://security-tracker.debian.org/tracker/CVE-2026-23399"
                },
                {
                    "category": "description",
                    "text": "nf\\_tables: nft\\_dynset: fix possible stateful expression memleak in error path",
                    "title": "microsoft - https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2026-Mar"
                },
                {
                    "category": "description",
                    "text": "In the Linux kernel, the following vulnerability has been resolved:\nnf_tables: nft_dynset: fix possible stateful expression memleak in error path\nIf cloning the second stateful expression in the element via GFP_ATOMIC\nfails, then the first stateful expression remains in place without being\nreleased.\n  unreferenced object (percpu) 0x607b97e9cab8 (size 16):\n    comm \"softirq\", pid 0, jiffies 4294931867\n    hex dump (first 16 bytes on cpu 3):\n      00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00\n    backtrace (crc 0):\n      pcpu_alloc_noprof+0x453/0xd80\n      nft_counter_clone+0x9c/0x190 [nf_tables]\n      nft_expr_clone+0x8f/0x1b0 [nf_tables]\n      nft_dynset_new+0x2cb/0x5f0 [nf_tables]\n      nft_rhash_update+0x236/0x11c0 [nf_tables]\n      nft_dynset_eval+0x11f/0x670 [nf_tables]\n      nft_do_chain+0x253/0x1700 [nf_tables]\n      nft_do_chain_ipv4+0x18d/0x270 [nf_tables]\n      nf_hook_slow+0xaa/0x1e0\n      ip_local_deliver+0x209/0x330\nA flaw was found in the Linux kernel's nf_tables component. This memory leak vulnerability occurs when cloning a stateful expression fails, leading to an unreleased expression. This can result in a Denial of Service (DoS) due to resource exhaustion.",
                    "title": "redhat - https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-23399.json"
                },
                {
                    "category": "other",
                    "text": "0.00018",
                    "title": "EPSS"
                },
                {
                    "category": "other",
                    "text": "3.6",
                    "title": "NCSC Score"
                },
                {
                    "category": "other",
                    "text": "Is related to (a version of) product Linux Kernel, Is related to a product by vendor Open Source, Is related to a product by vendor Linux",
                    "title": "NCSC Score top decreasing factors"
                },
                {
                    "category": "details",
                    "text": "Severity: 1\n",
                    "title": "Vendor assessment"
                }
            ],
            "product_status": {
                "known_affected": [
                    "CSAFPID-1287337",
                    "CSAFPID-5956455",
                    "CSAFPID-5956456",
                    "CSAFPID-5956457",
                    "CSAFPID-5956458",
                    "CSAFPID-2036024",
                    "CSAFPID-5761981",
                    "CSAFPID-1439317",
                    "CSAFPID-1439319",
                    "CSAFPID-1453379",
                    "CSAFPID-1453380",
                    "CSAFPID-1453381",
                    "CSAFPID-1453382",
                    "CSAFPID-2858634",
                    "CSAFPID-2858635",
                    "CSAFPID-1330297"
                ],
                "known_not_affected": [
                    "CSAFPID-1287338",
                    "CSAFPID-5904671",
                    "CSAFPID-5905005",
                    "CSAFPID-5905006",
                    "CSAFPID-5905027",
                    "CSAFPID-2036023",
                    "CSAFPID-1439315",
                    "CSAFPID-1439321",
                    "CSAFPID-1453376",
                    "CSAFPID-1453377",
                    "CSAFPID-1453378"
                ]
            },
            "references": [
                {
                    "category": "external",
                    "summary": "Source - cveprojectv5",
                    "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/23xxx/CVE-2026-23399.json"
                },
                {
                    "category": "external",
                    "summary": "Source - nvd",
                    "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-23399"
                },
                {
                    "category": "external",
                    "summary": "Source - debian",
                    "url": "https://security-tracker.debian.org/tracker/CVE-2026-23399"
                },
                {
                    "category": "external",
                    "summary": "Source - first",
                    "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0"
                },
                {
                    "category": "external",
                    "summary": "Source - microsoft",
                    "url": "https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2026-Mar"
                },
                {
                    "category": "external",
                    "summary": "Source - redhat",
                    "url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-23399.json"
                },
                {
                    "category": "external",
                    "summary": "Source - certbundde",
                    "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0910.json"
                },
                {
                    "category": "external",
                    "summary": "Reference - cveprojectv5; nvd",
                    "url": "https://git.kernel.org/stable/c/d1354873cbe3b344899c4311ac05897fd83e3f21"
                },
                {
                    "category": "external",
                    "summary": "Reference - cveprojectv5; nvd",
                    "url": "https://git.kernel.org/stable/c/31641c682db73353e4647e40735c7f2a75ff58ef"
                },
                {
                    "category": "external",
                    "summary": "Reference - cveprojectv5; nvd",
                    "url": "https://git.kernel.org/stable/c/c88a9fd26cee365bec932196f76175772a941cca"
                },
                {
                    "category": "external",
                    "summary": "Reference - cveprojectv5; nvd",
                    "url": "https://git.kernel.org/stable/c/0548a13b5a145b16e4da0628b5936baf35f51b43"
                },
                {
                    "category": "external",
                    "summary": "Reference - redhat",
                    "url": "https://www.cve.org/CVERecord?id=CVE-2026-23399"
                },
                {
                    "category": "external",
                    "summary": "Reference - redhat",
                    "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23399"
                },
                {
                    "category": "external",
                    "summary": "Reference - redhat",
                    "url": "https://lore.kernel.org/linux-cve-announce/2026032820-CVE-2026-23399-60d0@gregkh/T"
                },
                {
                    "category": "external",
                    "summary": "Reference - certbundde",
                    "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0910.json"
                },
                {
                    "category": "external",
                    "summary": "Reference - certbundde",
                    "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-0910"
                },
                {
                    "category": "external",
                    "summary": "Reference - certbundde",
                    "url": "https://lore.kernel.org/linux-cve-announce/"
                },
                {
                    "category": "external",
                    "summary": "Reference - certbundde",
                    "url": "https://lore.kernel.org/linux-cve-announce/2026032820-CVE-2026-23399-60d0@gregkh/"
                },
                {
                    "category": "external",
                    "summary": "Reference - certbundde",
                    "url": "https://lore.kernel.org/linux-cve-announce/2026032953-CVE-2026-23400-b75a@gregkh/"
                }
            ],
            "scores": [
                {
                    "cvss_v3": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H",
                        "baseScore": 6.5,
                        "baseSeverity": "MEDIUM"
                    },
                    "products": [
                        "CSAFPID-1287337",
                        "CSAFPID-1330297",
                        "CSAFPID-1439317",
                        "CSAFPID-1439319",
                        "CSAFPID-1453379",
                        "CSAFPID-1453380",
                        "CSAFPID-1453381",
                        "CSAFPID-1453382",
                        "CSAFPID-2036024",
                        "CSAFPID-2858634",
                        "CSAFPID-2858635",
                        "CSAFPID-5761981",
                        "CSAFPID-5956455",
                        "CSAFPID-5956456",
                        "CSAFPID-5956457",
                        "CSAFPID-5956458"
                    ]
                }
            ],
            "title": "CVE-2026-23399"
        }
    ]
}