CVE-2022-22706: Arm Mali GPU Kernel Driver Unspecified Vulnerability

CVE-2022-22706 is an unspecified vulnerability in the Arm Mali GPU Kernel Driver that lets a non-privileged user obtain write access to memory pages that should be read-only. Because the driver runs in the kernel, successful abuse can undermine memory protections and open a path to elevated privileges or further compromise on devices that rely on Mali GPUs. Defenders should treat it as a local privilege-escalation risk until the vendor advisory is reviewed and systems are confirmed patched.

The issue matters for any environment that ships Arm Mali graphics hardware—mobile devices, embedded platforms, and some server or appliance designs—because unprivileged local code can reach kernel-managed memory. Public detail beyond the CISA description is limited; confirm exact impact and affected builds against the vendor advisory.

How it works

The weakness is classified under CWE-119 (improper restriction of operations within the bounds of a memory buffer). In practical terms, the kernel driver fails to enforce intended read-only protections on certain memory pages. A non-privileged process that can interact with the Mali GPU driver may therefore write data into regions the kernel expects to remain immutable.

An attacker who already has local code execution (for example through a malicious app or a compromised user account) can leverage this write capability to alter kernel data structures or code paths. The precise trigger and memory layout are not detailed in the public summary; treat the attack surface as any interface that reaches the Mali kernel driver and verify mechanics only against the vendor advisory. No exploit code or ransomware linkage is documented for this CVE.

Am I affected? How to find it in your systems

Arm Mali GPUs appear in many Android handsets, tablets, set-top boxes, automotive systems, and other embedded Linux or Android-based platforms. Inventory starts with identifying devices or images that include Mali graphics hardware and the associated kernel driver module.

• Query device or firmware inventories for “Mali,” “Arm GPU,” or the specific kernel module name used by your vendor.
• On Linux-based systems, examine loaded modules and kernel version strings that reference Mali; on Android, check the graphics driver package and SoC documentation.
• Compare the installed driver build against the fixed versions listed in the vendor advisory—do not rely on generic version numbers.
• Review configuration for any user-space components that open device nodes or ioctls to the Mali driver; unrestricted local access increases exposure.

Telemetry signs of exploitation are not publicly catalogued for this CVE. Look for unexpected kernel memory faults, driver crashes, or privilege-escalation attempts originating from unprivileged processes that interact with the GPU. Correlate with process-creation and device-access logs; any confirmed anomaly should be investigated against the vendor’s guidance.

How to remediate

Apply the vendor-supplied update for the Arm Mali GPU Kernel Driver as directed by the advisory. CISA’s required action is simply to apply updates per vendor instructions; no additional public patch identifiers are provided here.

• Obtain the fixed driver package or firmware image from the device or SoC vendor, not from third-party mirrors.
• Test the update in a representative environment before wide deployment, especially on custom or long-lifecycle embedded images.
• After patching, re-verify that the driver version matches the advisory and that the vulnerable code path is no longer present.
• As a general hardening step for this class of kernel-driver flaws, restrict unprivileged access to GPU device nodes and disable unused graphics features where operationally feasible.

If you can't patch immediately

Until the vendor update can be installed, reduce the attack surface and increase detection.

• Segment devices that expose the Mali driver so that untrusted local users or apps cannot reach them.
• Apply virtual-patching rules or host-based controls that limit ioctl or device-node access to the GPU driver for non-privileged processes.
• Disable the GPU or related user-space services if graphics acceleration is not required for the workload.
• Increase monitoring of kernel logs, driver crashes, and privilege-escalation indicators; alert on anomalous writes or memory-protection faults involving the Mali module.
• Enforce least-privilege policies so that only necessary processes can open the driver interface.

These measures lower risk but do not eliminate it; schedule the official update as soon as possible.

If your data may have been exposed

Actively exploited kernel vulnerabilities can lead to full device compromise and subsequent data exposure. While ransomware use of this specific CVE is not documented, any confirmed exploitation should trigger standard incident-response steps: isolate the host, preserve forensic evidence, and assess whether credentials or sensitive data left the device. Organizations and individuals can also run a free exposure scan of their email addresses against known breach data sets to determine whether related accounts appear in public breach corpora and then rotate credentials accordingly.