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CVE-2026-40393 (GCVE-0-2026-40393)

Vulnerability from cvelistv5 – Published: 2026-04-12 18:49 – Updated: 2026-07-13 09:05
VLAI
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.
Severity
8.1 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-13 15:46 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
mesa3d Mesa Affected: 0 , < 25.3.6 (semver)
Affected: 26.0.0 , < 26.0.1 (semver)
    cpe:2.3:a:mesa3d:mesa:*:*:*:*:*:*:*:*
    cpe:2.3:a:mesa3d:mesa:*:*:*:*:*:*:*:*
Create a notification for this product.
Show details on NVD website
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


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