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Otherwise, it\nis possible to hit WARN_ON_ONCE in __kvmalloc_node_noprof() when\nresizing hashtable because __GFP_NOWARN is unset. See:\n\n 0708a0afe291 (\"mm: Consider __GFP_NOWARN flag for oversized kvmalloc() calls\")\n\nNote: hashtable resize is only possible from init_netns."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: netfilter: conntrack: fijar el tama\u00f1o m\u00e1ximo de la tabla hash a INT_MAX Utilice INT_MAX como tama\u00f1o m\u00e1ximo para la tabla hash de conntrack. De lo contrario, es posible alcanzar WARN_ON_ONCE en __kvmalloc_node_noprof() al cambiar el tama\u00f1o de la tabla hash porque __GFP_NOWARN no est\u00e1 configurado. Consulte: 0708a0afe291 (\"mm: Considere el indicador __GFP_NOWARN para llamadas kvmalloc() de gran tama\u00f1o\") Nota: el cambio de tama\u00f1o de la tabla hash solo es posible desde init_netns."}], "id": "CVE-2025-21648", "lastModified": "2025-10-16T19:20:51.323", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2025-01-19T11:15:10.410", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/5552b4fd44be3393b930434a7845d8d95a2a3c33"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a965f7f0ea3ae61b9165bed619d5d6da02c75f80"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b1b2353d768f1b80cd7fe045a70adee576b9b338"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b541ba7d1f5a5b7b3e2e22dc9e40e18a7d6dbc13"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d5807dd1328bbc86e059c5de80d1bbee9d58ca3d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f559357d035877b9d0dcd273e0ff83e18e1d46aa"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-Other"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: netfilter: conntrack: clamp maximum hashtable size to INT_MAX", "id": "2338814", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2338814"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.1", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "status": "draft"}, "cwe": "CWE-789", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnetfilter: conntrack: clamp maximum hashtable size to INT_MAX\nUse INT_MAX as maximum size for the conntrack hashtable. Otherwise, it\nis possible to hit WARN_ON_ONCE in __kvmalloc_node_noprof() when\nresizing hashtable because __GFP_NOWARN is unset. See:\n0708a0afe291 (\"mm: Consider __GFP_NOWARN flag for oversized kvmalloc() calls\")\nNote: hashtable resize is only possible from init_netns."], "name": "CVE-2025-21648", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-01-19T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-21648\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-21648\nhttps://lore.kernel.org/linux-cve-announce/2025011946-CVE-2025-21648-bcda@gregkh/T"], "threat_severity": "Moderate"}

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