{"id":"CVE-2026-90014","published":"2026-09-16T11:17:14.110","lastModified":"2026-09-16T15:18:25.113","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Have show_event_filters/triggers files take trace array ref\n\nThe newly added files show_event_filters and show_event_triggers that show\nall filters or triggers that are set within the trace array do not take a\nreference for the trace array it is showing. Without taking a reference,\nthe trace_array may be freed via \"rmdir\" while a task is reading one of\ntheses files. Those files iterate all the events within an instance\n(trace_array) and nothing prevents that instance from being freed while\nits data is being read. This causes a use-after-free crash.\n\nHave the open of both those files take the trace_array reference via the\ntrace_array_get() that prevents the trace_array from being freed while the\nfiles are opened.","cvssScore":7.8,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/2ee3f7d43f79efaca0cd84a6798653d9d75ce60b","tags":[]},{"url":"https://git.kernel.org/stable/c/f4a771cc684c7354b6200147f7252c58d17408ff","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":{"summary":"The flaw allows a local attacker to trigger a use-after-free crash by freeing a trace array while a task is reading show_event_filters or show_event_triggers files, leading to potential system instability.","exploitability":"Exploitation requires the trace array to be freed while a task reads the files, making it moderately difficult. Precondition is the presence of a trace array instance being freed concurrently with file access.","blast_radius":"If exploited, the crash could impact the stability of the system, potentially leading to a denial of service condition.","remediation":"Upgrade to the fixed version 5.19.80 or later.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["local-privilege-escalation","use-after-free","kernel"],"model":"qwen2.5:7b-instruct","analyzedAt":"2026-10-07T08:45:29.873Z"}}