CVE-2026-21732
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.
Scoring
- Severity
- CRITICAL
- CVSS base score
- 9.6
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
- EPSS probability
- 0.29%
- CWE
- CWE-823
- Published
- 2026-03-20
- Last modified
- 2026-03-23
Affected products
- Imagination Technologies Graphics DDK
- Imagination Technologies Graphics DDK
- Imagination Technologies Graphics DDK
- Imagination Technologies Graphics DDK
- Imagination Technologies Graphics DDK
Weakness type
Related vulnerabilities
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- CVE-2026-49746 — GPU DDK - Dimension Mismatch and Integer Truncation in PMRDevPhysAddrOSMem
- CVE-2026-49745 — GPU DDK - Unvalidated sHWPerfCtlDMABuf GPU-VA, DMA-write into FW privdata via MMU ctx 0
- CVE-2026-49744 — GPU DDK - Unchecked ui32TracePointer in rgxfw_log_ex()
- CVE-2026-21734 — GPU DDK - libusc OOB write at TreeRemove during WebGPU shader compilation
- CVE-2026-34193 — GPU DDK - Arbitrary write via UFO updates due insufficient pointer validation in rgxfw_to_ptr()