CVE-2025-40266

high

Description

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Check the untrusted offset in FF-A memory share Verify the offset to prevent OOB access in the hypervisor FF-A buffer in case an untrusted large enough value [U32_MAX - sizeof(struct ffa_composite_mem_region) + 1, U32_MAX] is set from the host kernel.

References

https://git.kernel.org/stable/c/fc3139d9f4c1fe1c7d5f25f99676bd8e9c6a1041

https://git.kernel.org/stable/c/f9f1aed6c8a3427900da3121e1868124854569c3

https://git.kernel.org/stable/c/bc1909ef38788f2ee3d8011d70bf029948433051

https://git.kernel.org/stable/c/103e17aac09cdd358133f9e00998b75d6c1f1518

Details

Source: Mitre, NVD

Published: 2025-12-04

Updated: 2026-07-30

Risk Information

CVSS v2

Base Score: 6.5

Vector: CVSS2#AV:L/AC:L/Au:M/C:C/I:C/A:C

Severity: Medium

CVSS v3

Base Score: 8.2

Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Severity: High

EPSS

EPSS: 0.00018