NVD Vulnerability Detail
Search Exploit, PoC
CVE-2026-40393
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.

Publication Date April 13, 2026, 4:16 a.m.
Registration Date April 15, 2026, 11:37 a.m.
Last Update April 17, 2026, 1:17 a.m.
CVSS3.1 : CRITICAL
スコア 9.8
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
攻撃元区分(AV) ネットワーク
攻撃条件の複雑さ(AC)
攻撃に必要な特権レベル(PR) 不要
利用者の関与(UI) 不要
影響の想定範囲(S) 変更なし
機密性への影響(C)
完全性への影響(I)
可用性への影響(A)
Affected software configurations
Configuration1 or higher or less more than less than
cpe:2.3:a:mesa3d:mesa:*:*:*:*:*:*:*:* 25.3.6
cpe:2.3:a:mesa3d:mesa:26.0.0:*:*:*:*:*:*:*
Related information, measures and tools
Common Vulnerabilities List