{"cve":"CVE-2026-31418","nvd":{"published":"2026-04-13T14:16:11.267","modified":"2026-10-15T02:19:03.653","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: ipset: drop logically empty buckets in mtype_del\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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":[],"references":["https://git.kernel.org/stable/c/58f3a14826d4e6b0d5421f1a64be280b48601ea2","https://git.kernel.org/stable/c/68ca0eea0af02bed36c5e2c13e9fa1647c31a7d4","https://git.kernel.org/stable/c/6cea34d7ec6829b62f521a37a287f670144a2233","https://git.kernel.org/stable/c/9862ef9ab0a116c6dca98842aab7de13a252ae02","https://git.kernel.org/stable/c/ad92ee87462f9a3061361d392e9dbfe2e5c1c9fb"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:30:49.762551342+00:00"},"epss":{"cve":"CVE-2026-31418","score":0.0012,"percentile":0.01836,"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."]}