CVE-2026-53169 Details
Description
In the Linux kernel, the following vulnerability has been resolved: accel/ethosu: reject NPU_OP_RESIZE commands from userspace NPU_OP_RESIZE is a U85-only command that the driver does not yet implement. The existing WARN_ON(1) placeholder fires unconditionally whenever userspace submits this command via DRM_IOCTL_ETHOSU_GEM_CREATE, causing unbounded kernel log spam. If panic_on_warn is set the kernel panics, giving any unprivileged user with access to the DRM device a trivial denial-of-service primitive. Replace the WARN_ON(1) with an explicit -EINVAL return so the ioctl rejects the command before it reaches hardware.
A denial-of-service vulnerability has been identified in the Linux kernel's Arm Ethos-U NPU driver, specifically in the handling of the NPU_OP_RESIZE command. This command, intended for the U85-only operations, is not yet implemented by the driver. When userspace submits this command through the DRM_IOCTL_ETHOSU_GEM_CREATE interface, it triggers a WARN_ON(1) placeholder. This not only generates excessive log spam but, if the panic_on_warn option is enabled, causes the kernel to panic. Such behavior provides an unprivileged user with a simple method to disrupt system operations by exploiting the DRM device interface.
The vulnerability has been addressed in the Linux kernel. Users can apply the latest patches available in the Linux stable tree to mitigate this issue.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/70090a32f56a4589e7e860e0f9a8fbe4417df0a1 | kernel.org | Patch |
| https://git.kernel.org/stable/c/ef911805d86a05363d3ec2fa9835a41def83bb7e | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-617 | Reachable Assertion | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 6.19, < 7.0.13 7.1 rc1 7.1 rc2 7.1 rc3 7.1 rc4 7.1 rc5 7.1 rc6 |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 6, 2026 | Initial Analysis | [email protected] |
| Jun 25, 2026 | New CVE Received | kernel.org |