Vulnerability · NVD

CVE-2025-40266

HIGH 8.2 Published on 2025-12-04

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.

Attack vector : Local No user interaction

Show raw CVSS vector

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

EPSS 0.15% exploit very unlikely percentile 4.4%

OS versions that fix this CVE

This CVE is resolved by the following OS security releases. Update the OS to at least the listed version.

Android Fixed in March 2026 patch level

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