{"id":"EM-20261106-PZD3","url":"https://cyber.eventmonitor.net/incident/EM-20261106-PZD3/linux-kernel-vulnerability-cve-2026-100081/","type":"cve","title":"Linux Kernel Vulnerability (CVE-2026-100081)","subtitle":"CVE-2026-100081","subject":"CVE-2026-100081","status":"Developing","severity":"high","affected":[],"headline":null,"born":"2026-11-06T19:17:03.373Z","firstSignal":"2026-11-06T18:23:02.000Z","lastSignal":"2026-11-06T19:17:03.373Z","updated":"2026-11-10T18:12:44.990Z","revision":1,"life":[{"status":"Born","at":"2026-11-06T19:17:03.373Z","why":"second independent source: C6 NVD CVE API 2.0"},{"status":"Developing","at":"2026-11-06T19:17:03.373Z","why":"signals keep joining"}],"changeLog":[{"at":"2026-11-06T18:23:02.000Z","what":"First signal: C41 Red Hat Security Data"},{"at":"2026-11-06T19:17:03.373Z","what":"Born: second source, C6 NVD CVE API 2.0. Page EM-20261106-PZD3 created."},{"at":"2026-11-06T19:17:03.373Z","what":"Severity raised to High by C6"}],"stages":[{"name":"Disclosed","at":"2026-11-06T19:17:03.373Z","detail":"C6 NVD published"},{"name":"Scored","at":"2026-11-06T19:17:03.373Z","detail":"CVSS 7.8 · EPSS 0.2%"},{"name":"Exploited","at":null,"detail":"No exploitation reported"},{"name":"Advisories","at":null,"detail":"None yet"},{"name":"Vendor Response","at":"2026-11-06T18:23:02.000Z","detail":"C41 published"},{"name":"Resolved","at":null,"detail":"After 14 quiet days"}],"signals":[{"at":"2026-11-06T18:23:02.000Z","source":"C41","sourceName":"Red Hat Security Data","role":"Vendor","severity":2,"title":"Red Hat: CVE-2026-100081 (moderate)","text":"kernel: kernel: xen-netback: Denial of Service via race condition during interface disconnect","url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-100081.json"},{"at":"2026-11-06T19:17:03.373Z","source":"C6","sourceName":"NVD CVE API 2.0","role":"Database","severity":3,"title":"CVE-2026-100081 (CVSS 7.8)","text":"In the Linux kernel, the following vulnerability has been resolved:\n\nxen-netback: defer xenvif_mcast_addr_list_free()\n\nIn order for the function to legitimately avoid locking/RCU, it needs to\nrun after all TX/RX processing has finished/stopped: Lookups happen from\nxenvif_start_xmit(), while adds/removes happen from xenvif_tx_action()\n(called out of xenvif_poll()).\n\nMove the call out of xenvif_disconnect_data() (the call to the function\nfrom connect()'s error path doesn't require any cleaning up there), and\nput it past the synchronization point in backend_disconnect().\n\nThis is XSA-527 /…","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-100081"}],"crowd":[],"reference":{"nvd":{"published":"2026-11-06T19:17:03.373","score":7.8,"severity":"HIGH","desc":"In the Linux kernel, the following vulnerability has been resolved:\n\nxen-netback: defer xenvif_mcast_addr_list_free()\n\nIn order for the function to legitimately avoid locking/RCU, it needs to\nrun after all TX/RX processing has finished/stopped: Lookups happen from\nxenvif_start_xmit(), while…","product":"","seen":1794334364990},"kev":null,"epss":{"epss":0.00244,"pct":0.15688,"at":1794098667825},"p0":false},"mergedInto":null,"publisher":"Event Monitor Cyber"}