{"id":"CVE-2025-21826","revision":"ae450472cc0c4604ade01d33b842b8e5","records":[{"revision":"ae450472cc0c4604ade01d33b842b8e5","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2025-21826","aliases":[],"title":"netfilter: nf_tables: reject mismatching sum of field_len with set key length","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_tables: reject mismatching sum of field_len with set key length\n\nThe field length description provides the length of each separated key\nfield in the concatenation, each field gets rounded up to 32-bits to\ncalculate the pipapo rule width from pipapo_init(). The set key length\nprovides the total size of the key aligned to 32-bits.\n\nRegister-based arithmetics still allows for combining mismatching set\nkey length and field length description, eg. set key length 10 and field\ndescription [ 5, 4 ] leading to pipapo width of 12.","state":0,"publishedAt":"2025-03-06T16:04:32.274+00:00","modifiedAt":"2026-10-15T01:04:36.09+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"net/netfilter/nf_tables_api.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"2d4c0798a1ef8db15b3277697ac2def4eda42312\",\n                            \"lessThan\": \"6b467c8feac759f4c5c86d708beca2aa2b29584f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"77be8c495a3f841e88b46508cc20d3d7d3289da3\",\n                            \"lessThan\": \"5083a7ae45003456c253e981b30a43f71230b4a3\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"9cb084df01e198119de477ac691d682fb01e80f3\",\n                            \"lessThan\": \"2ac254343d3cf228ae0738b2615fedf85d000752\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"dc45bb00e66a33de1abb29e3d587880e1d4d9a7e\",\n                            \"lessThan\": \"82e491e085719068179ff6a5466b7387cc4bbf32\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3ce67e3793f48c1b9635beb9bb71116ca1e51b58\",\n                            \"lessThan\": \"49b7182b97bafbd5645414aff054b4a65d05823d\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3ce67e3793f48c1b9635beb9bb71116ca1e51b58\",\n                            \"lessThan\": \"ab50d0eff4a939d20c37721fd9766347efcdb6f6\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3ce67e3793f48c1b9635beb9bb71116ca1e51b58\",\n                            \"lessThan\": \"1b9335a8000fb70742f7db10af314104b6ace220\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ff67e3e488090908dc015ba04d7407d8bd467f7e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5.10.209\",\n                            \"lessThan\": \"5.10.235\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.148\",\n                            \"lessThan\": \"5.15.179\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.75\",\n                            \"lessThan\": \"6.1.129\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.14\",\n                            \"lessThan\": \"6.6.76\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.7.2\",\n                            \"lessThan\": \"6.8\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"net/netfilter/nf_tables_api.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.8\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.8\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.235\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.179\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.129\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.76\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.13\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.13.2\",\n                            \"lessThanOrEqual\": \"6.13.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.14\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/6b467c8feac759f4c5c86d708beca2aa2b29584f","https://git.kernel.org/stable/c/5083a7ae45003456c253e981b30a43f71230b4a3","https://git.kernel.org/stable/c/2ac254343d3cf228ae0738b2615fedf85d000752","https://git.kernel.org/stable/c/82e491e085719068179ff6a5466b7387cc4bbf32","https://git.kernel.org/stable/c/49b7182b97bafbd5645414aff054b4a65d05823d","https://git.kernel.org/stable/c/ab50d0eff4a939d20c37721fd9766347efcdb6f6","https://git.kernel.org/stable/c/1b9335a8000fb70742f7db10af314104b6ace220"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-21826","license":"CVE Program Terms of Use","key":"cve-program:CVE-2025-21826","identifiers":["CVE-2025-21826"]},"retained":false,"historicalAffected":[]}],"coverage":[]}