CVE-2026-40393

HIGH

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.

CVSS v3.1 Score

8.1
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Published: 4/12/2026Modified: 4/16/2026

Related Intelligence (0)

No articles currently reference this CVE.

References (2)

https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/39866Issue Trackinghttps://lists.freedesktop.org/archives/mesa-dev/2026-February/226597.htmlIssue TrackingMailing List