CVE-2025-40081

CVE-2025-40081 is a security vulnerability that is still awaiting full analysis and scoring. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

In the Linux kernel, the following vulnerability has been resolved: perf: arm_spe: Prevent overflow in PERF_IDX2OFF() Cast nr_pages to unsigned long to avoid overflow when handling large AUX buffer sizes (>= 2 GiB).

Frequently asked questions

What is CVE-2025-40081?
In the Linux kernel, the following vulnerability has been resolved: perf: arm_spe: Prevent overflow in PERF_IDX2OFF() Cast nr_pages to unsigned long to avoid overflow when handling large AUX buffer sizes (>= 2 GiB).
Is CVE-2025-40081 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-40081?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-40081 have an EU (EUVD) identifier?
Yes. CVE-2025-40081 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-36447.
When was CVE-2025-40081 published?
CVE-2025-40081 was published on 2025-10-28 and last updated on 2026-06-17.

References