PT-2026-61397 · Linux+1 · Linux Kernel+1

CVE-2026-64080

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Published

2026-07-19

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Updated

2026-09-07

CVSS v3.1

9.3

Critical

VectorAV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)
Description A use-after-free issue exists in the arm ffa firmware component. The notification handlers retrieve a notifier callback while holding the notify lock, but release the lock before dereferencing the entry. This creates a race condition where a concurrent unregister operation can delete and free the entry, causing the handler to access stale memory.
Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Use After Free

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Weakness Enumeration

Related Identifiers

CVE-2026-64080
USN-8593-1
USN-8603-1
USN-8618-1
USN-8663-1
USN-8664-1
USN-8728-1

Affected Products

Linux Kernel
Ubuntu