CVE-2026-64081

High

Description

In the Linux kernel, the following vulnerability has been resolved: firmware: arm_ffa: Validate framework notification message layout Framework notifications carry an indirect message in the shared RX buffer. Validate the reported offset and size before using them, reject zero-length payloads, and ensure that any non-header payload starts at the UUID field rather than in the middle of the message header. Use the validated offset and size values for both kmemdup() and the UUID parsing path so malformed firmware data cannot drive an out-of-bounds read or an oversized allocation.

SeverityHigh
CVSS8.4
Exploit probability—
ProductLinux Kernel
PublishedJul 19, 2026
First seenJul 19, 2026

How to fix

Update
  • linux linux_kernel6.18.34, 7.0.11 or later

Affected products

ProductAffected versionsFixed in
linux linux_kernel6.15 ≤ v < 6.18.34, 6.19 ≤ v < 7.0.11, 7.16.18.34, 7.0.11

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