{"cve":"CVE-2026-74564","nvd":{"published":"2026-08-15T13:18:01.903","modified":"2026-10-16T20:17:37.793","status":"Received","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: xt_hashlimit: validate hashtable supports XT_HASHLIMIT_RATE_MATCH\n\nThe XT_HASHLIMIT_RATE_MATCH flag mode changes the semantics of the\ndsthash_ent structure which represents an entry in the hashtable.  There\nis a union area which uses a different layout to express the rate match\nmode.\n\nUpdate .checkentry path to validate the XT_HASHLIMIT_RATE_MATCH mode\nflag is requested by two or more different rules that refer to the same\nhashtable. Otherwise, uninitialized access to the burst field in the\nunion is possible.\n\nReject the use of the XT_HASHLIMIT_RATE_MATCH mode flag if set on by\nrevision less than 3 too.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","score":7.1},"cwes":[],"references":["https://git.kernel.org/stable/c/06a76334243ccd875a981aa8bb46c0f931ef1e3b","https://git.kernel.org/stable/c/24683fea1f06bd3bd2707b99460e859bc6464c22","https://git.kernel.org/stable/c/305b63e1402267459fdabb183af4527f6799eebf","https://git.kernel.org/stable/c/32ec8d4aba2cf22e12bdc28df8c4bd833c195fc0","https://git.kernel.org/stable/c/402befce5854c195058cf4bab7c78ca286068a26"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:49:10.689564601+00:00"},"epss":{"cve":"CVE-2026-74564","score":0.00118,"percentile":0.01702,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}