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CVE-2026-64520

Last refreshed2026-11-03

Status: UPDATED  |  Advisory ID: CVE-2026-64520

Key Details

CVECVE-2026-64520
CVSS Score / Version
8.4 (High) / CVSS v3.1
Updated2026-11-03
CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS Prose
attack vector is local; attack complexity is low; privileges required is none; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is high; availability impact is high.
Affected products
Linux Kernel

Affected Products, Subsystems & Sectors

VendorProductAffected VersionsPatch Status
LinuxLinux Kernel
SubsystemsOT Supporting Infrastructure
SectorsAll Sectors

What to Know

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

firmware: arm_ffa: Bound PARTITION_INFO_GET_REGS copies

The register-based PARTITION_INFO_GET path trusted the firmware-provided

indices when copying partition descriptors into the caller buffer.

Reject inconsistent counts or index progressions so the copy loop cannot

write past the allocated array.

(fixed cur_idx when exactly one descriptor in the first fragment) (NVD)

What to Do

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

References

SourceReference
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2026-64520
CVEhttps://www.cve.org/CVERecord?id=CVE-2026-64520

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