{"schema_version":"1.9.0","id":"UBUNTU-CVE-2026-64081","published":"2026-07-20T00:00:00Z","modified":"2026-09-08T12:39:11.712101383Z","related":["USN-8593-1","USN-8603-1","USN-8618-1","USN-8663-1","USN-8664-1","USN-8728-1"],"upstream":["CVE-2026-64081"],"details":"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.","affected":[{"package":{"name":"linux-hwe-edge","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/linux-hwe-edge?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.8.0-28.30~16.04.1","4.8.0-30.32~16.04.1","4.8.0-32.34~16.04.1","4.8.0-34.36~16.04.1","4.10.0-14.16~16.04.1","4.10.0-19.21~16.04.1","4.10.0-20.22~16.04.1","4.10.0-21.23~16.04.1","4.10.0-22.24~16.04.1","4.10.0-24.28~16.04.1","4.10.0-26.30~16.04.1","4.11.0-13.19~16.04.1","4.11.0-14.20~16.04.1","4.13.0-16.19~16.04.3","4.13.0-17.20~16.04.1","4.13.0-19.22~16.04.1","4.13.0-21.24~16.04.1","4.13.0-25.29~16.04.2","4.15.0-13.14~16.04.1","4.15.0-15.16~16.04.1","4.15.0-20.21~16.04.1","4.15.0-22.24~16.04.1","4.15.0-23.25~16.04.1"],"ecosystem_specific":{"binaries":[{"binary_name":"block-modules-4.15.0-23-generic-di","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"block-modules-4.15.0-23-generic-lpae-di","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"crypto-modules-4.15.0-23-generic-di","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"crypto-modules-4.15.0-23-generic-lpae-di","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"dasd-extra-modules-4.15.0-23-generic-di","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"dasd-modules-4.15.0-23-generic-di","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"fat-modules-4.15.0-23-generic-di","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"fat-modules-4.15.0-23-generic-lpae-di","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"fb-modules-4.15.0-23-generic-di","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"firewire-core-modules-4.15.0-23-generic-di","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"floppy-modules-4.15.0-23-generic-di","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"fs-core-modules-4.15.0-23-generic-di","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"fs-core-modules-4.15.0-23-generic-lpae-di","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"fs-secondary-modules-4.15.0-23-generic-di","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"fs-secondary-modules-4.15.0-23-generic-lpae-di","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"input-modules-4.15.0-23-generic-di","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"input-modules-4.15.0-23-generic-lpae-di","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"ipmi-modules-4.15.0-23-generic-di","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"ipmi-modules-4.15.0-23-generic-lpae-di","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"irda-modules-4.15.0-23-generic-di","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"irda-modules-4.15.0-23-generic-lpae-di","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"kernel-image-4.15.0-23-generic-di","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"kernel-image-4.15.0-23-generic-lpae-di","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"linux-cloud-tools-4.15.0-23-generic","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"linux-cloud-tools-4.15.0-23-lowlatency","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"linux-headers-4.15.0-23","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"linux-headers-4.15.0-23-generic","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"linux-headers-4.15.0-23-generic-lpae","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"linux-headers-4.15.0-23-lowlatency","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"linux-hwe-edge-cloud-tools-4.15.0-23","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"linux-hwe-edge-tools-4.15.0-23","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"linux-hwe-edge-udebs-generic","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"linux-hwe-edge-udebs-generic-lpae","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"linux-image-4.15.0-23-generic","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"linux-image-4.15.0-23-generic-lpae","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"linux-image-4.15.0-23-lowlatency","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"linux-image-unsigned-4.15.0-23-generic","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"linux-image-unsigned-4.15.0-23-lowlatency","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"linux-modules-4.15.0-23-generic","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"linux-modules-4.15.0-23-generic-lpae","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"linux-modules-4.15.0-23-lowlatency","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"linux-modules-extra-4.15.0-23-generic","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"linux-source-4.15.0","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"linux-tools-4.15.0-23-generic","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"linux-tools-4.15.0-23-generic-lpae","binary_version":"4.15.0-23.2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