CVE-2026-74471

Last refreshed2026-10-17

Status: UPDATED | Advisory ID: CVE-2026-74471

Key Details

CVE	CVE-2026-74471
CVSS Score / Version	7.8 (High) / CVSS v3.1
Updated	2026-10-16
CVSS Vector	`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`
CVSS Prose	attack vector is local; attack complexity is low; privileges required is low; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is high; availability impact is high.
Affected products	Linux Kernel

Vendor	Product	Affected Versions	Patch Status
Linux	Linux Kernel

Vendor

Product

Affected Versions

Patch Status

Linux

Linux Kernel

Subsystems	OT Supporting Infrastructure
Sectors	All Sectors

In the Linux kernel, the following vulnerability has been resolved:

tracing: Check return value of __register_event() in trace_module_add_events()

trace_module_add_events() ignores the return value of __register_event()

and unconditionally calls __add_event_to_tracers() for each event.

If __register_event() fails (for example, if event_init() fails), the

trace_event_call is not added to ftrace_events list, but

__add_event_to_tracers() still creates a trace_event_file pointing to it.

If module loading subsequently fails and module memory is freed, tracing

state retains a stale trace_event_call pointer in trace_event_file,

leading to a use-after-free when tracefs or tracing subsystem operations

are later executed.

Fix this by checking the return value of __register_event() and only

calling __add_event_to_tracers() if event registration succeeded. (NVD)

Monitor Linux's web page for any future patch releases.

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-74471
CVE	https://www.cve.org/CVERecord?id=CVE-2026-74471

Source

Reference

NVD

CVE