CVE-2026-41158: GPU DDK - Backed sparse PMRs are not handled by deferred free mechanism after shrink

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-06-12 · updated 2026-10-25
Weakness: CWE-416

Description

Software installed and run as a non-privileged user may conduct GPU system calls to write to arbitrary freed physical pages. Physical memory allocated and freed, without the deferred free mechanism can lead to those resources being used for read/write by the GPU after the kernel module has freed the resource.

Affected products

Imagination Technologies Graphics DDK: from 25.1 RTM through 25.3 RTM; 26.1 RTM

References

https://www.imaginationtech.com/gpu-driver-vulnerabilities/

Get alerted when CVE-2026-41158 or the next vulnerability affects your stack