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EXPOSURES › CVE-2026-40393

CVE-2026-40393

HIGH
DETAIL
SourceNVD · cve Published2026-04-12 CVSS8.1 Referencehttps://nvd.nist.gov/vuln/detail/CVE-2026-40393 ↗
SHAME 25/100

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.

▸ RECOMMENDED ACTION  Patch the affected products and confirm your instances are covered.

PLAYERS IMPLICATED
mesa3d · vendormesa · product
DESCRIPTION

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 FEDRAMP PRODUCTS · 0
No correlated FedRAMP products.