Disclosure summary
In Mesa before 25.3.6 and 26 before 26.0.1, out-of-bounds memory access can occur in WebGPU because the amount of to-be-allocated data depends on an untrusted party, and is then used for alloca.
Source-reported weakness categories
CWE-787
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
Microsoft Security Updates (CVRF) · 2026-Apr
Open original source · Updated Sep 24, 2026
In Mesa before 25.3.6 and 26 before 26.0.1, out-of-bounds memory access can occur in WebGPU because the amount of to-be-allocated data depends on an untrusted party, and is then used for alloca.
Maximum of vendor-reported product scores; products and fixed builds are associations, not a universal affected-version statement.
Microsoft maximum product score: 8.1
| Vendor | Product / association | Version / bounds |
|---|---|---|
| Microsoft update guide | azl3 mesa 24.0.1-6 on Azure Linux 3.0 | (MSRC status code 3) |
| Microsoft update guide | cbl2 mesa 21.0.0-4 on CBL Mariner 2.0 | (MSRC status code 3) |
| Microsoft update guide | cbl2 mesa 21.0.0-4 on CBL-Mariner 2.0 | (MSRC status code 3) |
Vendor remediation references
- CBL-Mariner Releases · build 24.0.1-8 · product IDs 21199-17084
- Vendor guidance · product IDs 21199-17084
- Release Notes · product IDs 21221-21692
- Vendor guidance · product IDs 21221-21692
Original records & references
- NIST NVD record
- CVE Program record
- msrc.microsoft.com — Vendor advisory
PUBLISHED 2026-04-13T21:01:32-04:00
MODIFIED 2026-09-24T21:49:37-04:00
INGESTED 2026-10-08T12:45:03-04:00