CVE-2026-74471
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.13%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.13% probability · 2th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
EPSS 0.1% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://git.kernel.org/stable/c/000765dcdc3edf128990762790543adc4b868f6c
- https://git.kernel.org/stable/c/22f954f7a8afe975e85517aff41b35defe05144b
- https://git.kernel.org/stable/c/3bf965a2827c44f03294107703e7ba53fbd0a69a
- https://git.kernel.org/stable/c/54b7a358f6399c1242d2fb7f4f96085af34baa5e
- https://git.kernel.org/stable/c/9d6d79744f01eacaf3d5522f4fcd59939581abfd
- https://git.kernel.org/stable/c/ac8719969e6c3c54e939834df812bc41f25453cf
- https://git.kernel.org/stable/c/cbb5ed3be9cae70e1c12b1991009b4e12bf4a4ca
- https://git.kernel.org/stable/c/d61ee2a27dfd5eb43ddc18af40168f5b9eb1cea5
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.