CVE-2026-68261
Description
A flaw was found in the Linux kernel's drm/imagination component. A local user could exploit this vulnerability by passing an invalid virtual machine (VM) context handle to the DRM_IOCTL_PVR_CREATE_CONTEXT ioctl. This improper error checking can lead to a kernel crash, resulting in a Denial of Service (DoS) for the affected system.
Statement
This issue affects systems with Imagination PowerVR GPUs. pvr_vm_context_lookup() returns NULL on invalid handles but was checked with IS_ERR(), so passing an invalid VM context handle to DRM_IOCTL_PVR_CREATE_CONTEXT causes NULL dereference. Systems without PowerVR hardware are not affected.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 5.5 | N/A | N/A |
| Attack Vector | Local | N/A | N/A |
| Attack Complexity | Low | N/A | N/A |
| Privileges Required | Low | N/A | N/A |
| User Interaction | None | N/A | N/A |
| Scope | Unchanged | N/A | N/A |
| Confidentiality | None | N/A | N/A |
| Integrity Impact | None | N/A | N/A |
| Availability Impact | High | N/A | N/A |
Vector
Red Hat: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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