{"id":"EM-20261107-3A5D","url":"https://cyber.eventmonitor.net/incident/EM-20261107-3A5D/linux-kernel-vulnerability-cve-2026-99281/","type":"cve","title":"Linux Kernel Vulnerability (CVE-2026-99281)","subtitle":"CVE-2026-99281","subject":"CVE-2026-99281","status":"Developing","severity":"high","affected":[],"headline":null,"born":"2026-11-07T15:30:28.000Z","firstSignal":"2026-11-07T14:08:47.000Z","lastSignal":"2026-11-07T15:30:28.000Z","updated":"2026-11-08T00:44:27.825Z","revision":1,"life":[{"status":"Born","at":"2026-11-07T15:30:28.000Z","why":"second independent source: C29 CIRCL Vulnerability-Lookup"},{"status":"Developing","at":"2026-11-07T15:30:28.000Z","why":"signals keep joining"}],"changeLog":[{"at":"2026-11-07T14:08:47.000Z","what":"First signal: C41 Red Hat Security Data"},{"at":"2026-11-07T15:30:28.000Z","what":"Born: second source, C29 CIRCL Vulnerability-Lookup. Page EM-20261107-3A5D created."}],"stages":[{"name":"Disclosed","at":"2026-11-07T14:17:03.790Z","detail":"C6 NVD published"},{"name":"Scored","at":null,"detail":"No CVSS yet"},{"name":"Exploited","at":null,"detail":"No exploitation reported"},{"name":"Advisories","at":null,"detail":"None yet"},{"name":"Vendor Response","at":"2026-11-07T14:08:47.000Z","detail":"C41 published"},{"name":"Resolved","at":null,"detail":"After 14 quiet days"}],"signals":[{"at":"2026-11-07T14:08:47.000Z","source":"C41","sourceName":"Red Hat Security Data","role":"Vendor","severity":3,"title":"Red Hat: CVE-2026-99281 (important)","text":"kernel: kernel: Unauthorized network device access via missing permission checks on ownerless TUN/TAP devices","url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-99281.json"},{"at":"2026-11-07T15:30:28.000Z","source":"C29","sourceName":"CIRCL Vulnerability-Lookup","role":"Database","severity":2,"title":"GHSA-cfrf-w8r8-rf8x / CVE-2026-99281","text":"In the Linux kernel, the following vulnerability has been resolved:\n\ntun: Require CAP_NET_ADMIN to attach to an ownerless device\n\nTwenty years ago I made creating a tuntap device require CAP_NET_ADMIN\nin commit ca6bb5d7ab22 (\"[NET]: Require CAP_NET_ADMIN to create tuntap\ndevices.\")\n\nThe idea was…","url":"https://vulnerability.circl.lu/vuln/GHSA-cfrf-w8r8-rf8x"}],"crowd":[],"reference":{"nvd":{"published":"2026-11-07T14:17:03.790","score":null,"severity":"","desc":"In the Linux kernel, the following vulnerability has been resolved:\n\ntun: Require CAP_NET_ADMIN to attach to an ownerless device\n\nTwenty years ago I made creating a tuntap device require CAP_NET_ADMIN\nin commit ca6bb5d7ab22 (\"[NET]: Require CAP_NET_ADMIN to create tuntap\ndevices.\")\n\nThe idea was…","product":"","seen":1794069191148},"kev":null,"epss":null,"p0":false},"mergedInto":null,"publisher":"Event Monitor Cyber"}