CVE-2026-40393
8.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| mesa3d | Mesa | 0 < 25.3.6 | affected |
| mesa3d | Mesa | 26.0.0 < 26.0.1 | affected |
Weaknesses
- CWE-787: CWE-787 Out-of-bounds Write
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: total
References
- https://lists.freedesktop.org/archives/mesa-dev/2026-February/226597.html
- https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/39866
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