PT-2026-64741 · Linux+1 · Linux Kernel+1

CVE-2026-64520

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Published

2026-07-25

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Updated

2026-09-07

CVSS v3.1

8.4

High

VectorAV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)
Description An issue exists in the arm ffa firmware component where the register-based PARTITION INFO GET path trusts indices provided by the firmware when copying partition descriptors into the caller buffer. This trust allows the copy loop to potentially write past the allocated array if inconsistent counts or index progressions are provided.
Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

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Related Identifiers

CVE-2026-64520
USN-8618-1
USN-8622-1
USN-8623-1
USN-8728-1

Affected Products

Linux Kernel
Ubuntu