{"id":"EM-20261102-ZW6H","url":"https://cyber.eventmonitor.net/incident/EM-20261102-ZW6H/","type":"cve","title":"Linux Kernel Vulnerability (CVE-2026-99233)","subtitle":"CVE-2026-99233","subject":"CVE-2026-99233","status":"Developing","severity":"high","affected":[],"headline":null,"born":"2026-11-02T16:17:48.390Z","firstSignal":"2026-11-02T16:06:40.000Z","lastSignal":"2026-11-02T16:17:48.390Z","updated":"2026-11-04T14:43:58.877Z","revision":1,"life":[{"status":"Born","at":"2026-11-02T16:17:48.390Z","why":"second independent source: C6 NVD CVE API 2.0"},{"status":"Developing","at":"2026-11-02T16:17:48.390Z","why":"signals keep joining"}],"changeLog":[{"at":"2026-11-02T16:06:40.000Z","what":"First signal: C41 Red Hat Security Data"},{"at":"2026-11-02T16:17:48.390Z","what":"Born: second source, C6 NVD CVE API 2.0. Page EM-20261102-ZW6H created."}],"stages":[{"name":"Disclosed","at":"2026-11-02T16:17:48.390Z","detail":"C6 NVD published"},{"name":"Scored","at":"2026-11-02T16:17:48.390Z","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":"2026-11-02T16:06:40.000Z","detail":"C41 published"},{"name":"Resolved","at":null,"detail":"After 14 quiet days"}],"signals":[{"at":"2026-11-02T16:06:40.000Z","source":"C41","sourceName":"Red Hat Security Data","role":"Vendor","severity":3,"title":"Red Hat: CVE-2026-99233 (important)","text":"kernel: kernel: Privilege escalation via use-after-free in tracing subsystem","url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-99233.json"},{"at":"2026-11-02T16:17:48.390Z","source":"C6","sourceName":"NVD CVE API 2.0","role":"Database","severity":3,"title":"CVE-2026-99233 (CVSS 7.8)","text":"In the Linux kernel, the following vulnerability has been resolved:\n\ntracing/histograms: Verify event_call identity when updating synth_event refcount\n\nIn event_hist_trigger_parse() and hist_unreg_all(), the histogram\nregistration and unregistration paths look up find_synth_event() using\ntrace_event_name(file->event_call) and adjust se->ref if a match is\nfound.\n\nBecause find_synth_event() only compares the event basename, registering\nor removing a histogram on a non-synthetic trace event whose basename\nmatches a synthetic event erroneously modifies the synthetic event's\nreference count.  If a ","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-99233"}],"crowd":[],"reference":{"nvd":{"published":"2026-11-02T16:17:48.390","score":7.8,"severity":"HIGH","desc":"In the Linux kernel, the following vulnerability has been resolved:\n\ntracing/histograms: Verify event_call identity when updating synth_event refcount\n\nIn event_hist_trigger_parse() and hist_unreg_all(), the histogram\nregistration and unregistration paths look up find_synth_event() using\ntrace_event","product":"","seen":1793803438877},"kev":null,"epss":{"epss":0.00121,"pct":0.01887,"at":1793803438877},"p0":false},"mergedInto":null,"publisher":"Event Monitor Cyber"}