{"id":"EM-20261102-NIHE","url":"https://cyber.eventmonitor.net/incident/EM-20261102-NIHE/","type":"cve","title":"Linux Kernel Vulnerability (CVE-2026-99237)","subtitle":"CVE-2026-99237","subject":"CVE-2026-99237","status":"Developing","severity":"high","affected":[],"headline":null,"born":"2026-11-02T16:17:49.213Z","firstSignal":"2026-11-02T16:06:42.000Z","lastSignal":"2026-11-02T16:17:49.213Z","updated":"2026-11-04T14:43:58.877Z","revision":1,"life":[{"status":"Born","at":"2026-11-02T16:17:49.213Z","why":"second independent source: C6 NVD CVE API 2.0"},{"status":"Developing","at":"2026-11-02T16:17:49.213Z","why":"signals keep joining"}],"changeLog":[{"at":"2026-11-02T16:06:42.000Z","what":"First signal: C41 Red Hat Security Data"},{"at":"2026-11-02T16:17:49.213Z","what":"Born: second source, C6 NVD CVE API 2.0. Page EM-20261102-NIHE created."}],"stages":[{"name":"Disclosed","at":"2026-11-02T16:17:49.213Z","detail":"C6 NVD published"},{"name":"Scored","at":"2026-11-02T16:17:49.213Z","detail":"CVSS 7.8 · EPSS 0.1%"},{"name":"Exploited","at":null,"detail":"No exploitation reported"},{"name":"Advisories","at":null,"detail":"None yet"},{"name":"Vendor Response","at":"2026-11-02T16:06:42.000Z","detail":"C41 published"},{"name":"Resolved","at":null,"detail":"After 14 quiet days"}],"signals":[{"at":"2026-11-02T16:06:42.000Z","source":"C41","sourceName":"Red Hat Security Data","role":"Vendor","severity":3,"title":"Red Hat: CVE-2026-99237 (important)","text":"kernel: kernel: privilege escalation via race condition in tracing subsystem","url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-99237.json"},{"at":"2026-11-02T16:17:49.213Z","source":"C6","sourceName":"NVD CVE API 2.0","role":"Database","severity":3,"title":"CVE-2026-99237 (CVSS 7.8)","text":"In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Hold trace_types_lock when resetting last boot data from readers\n\nupdate_last_data_if_empty() is called from tracing_open() with O_TRUNC,\ntracing_read_pipe() and tracing_buffers_read() without trace_types_lock.\nTwo readers can both pass the LAST_BOOT test and free module_delta\ntwice, and a module notifier can update module_delta while it is being\nfreed.\n\nTake trace_types_lock in those paths and keep the callers that already\nhold it on an unlocked variant.","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-99237"}],"crowd":[],"reference":{"nvd":{"published":"2026-11-02T16:17:49.213","score":7.8,"severity":"HIGH","desc":"In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Hold trace_types_lock when resetting last boot data from readers\n\nupdate_last_data_if_empty() is called from tracing_open() with O_TRUNC,\ntracing_read_pipe() and tracing_buffers_read() without trace_types_lock.\nTwo readers","product":"","seen":1793803438877},"kev":null,"epss":{"epss":0.0012,"pct":0.01845,"at":1793803438877},"p0":false},"mergedInto":null,"publisher":"Event Monitor Cyber"}