CVE-2026-21732
CRITICALGPU DDK - libusc OOB write at ConvertSwitchToArrayLookupBP during WebGPU shader compilation
Title source: cnaDescription
A web page that contains unusual GPU shader code is loaded into the GPU compiler process and can trigger a write out-of-bounds write crash in the GPU shader compiler library. On certain platforms, when the compiler process has system privileges this could enable further exploits on the device. An edge case using a very large value in switch statements in GPU shader code can cause a segmentation fault in the GPU shader compiler due to an out-of-bounds write access.
References (1)
Scores
CVSS v3
9.6
EPSS
0.0006
EPSS Percentile
18.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-787
CWE-823
Status
published
Products (9)
Imagination Technologies/Graphics DDK
1.17 RTM
Imagination Technologies/Graphics DDK
1.18 RTM
Imagination Technologies/Graphics DDK
23.2 RTM
Imagination Technologies/Graphics DDK
24.1 RTM - 25.1 RTM
Imagination Technologies/Graphics DDK
25.2 RTM
imaginationtech/ddk
1.17
imaginationtech/ddk
1.18
imaginationtech/ddk
23.2
imaginationtech/ddk
24.1 - 25.1
Published
Mar 20, 2026
Tracked Since
Mar 21, 2026