Bug 2514442 (CVE-2026-68446)

Summary: CVE-2026-68446 kernel: drm/vmwgfx: Validate vmw_surface_metadata::array_size
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: akhatavk, aos-team-art-private, asdas, dpaolell, jdelft, jupierce, lgarciaa, mbiarnes, ppalepu, ppostler, prdhamdh, rhel-process-autobot, sghai, sidsharm, suppawar, vlaad, watson-tool-maintainers
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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Doc Text:
A flaw was found in the `drm/vmwgfx` component of the Linux kernel. This vulnerability arises from insufficient validation of the `vmw_surface_metadata::array_size` field, which is supplied by userspace. An attacker could exploit this by providing a malformed `array_size` value, potentially leading to unexpected system behavior or a denial of service (DoS).
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Description OSIDB Bzimport 2026-08-12 00:21:37 UTC
In the Linux kernel, the following vulnerability has been resolved:

drm/vmwgfx: Validate vmw_surface_metadata::array_size

This field comes from userspace and should be validated against specific
limits depending on which Shader Model (SM) is available.

Comment 1 Mauro Matteo Cascella 2026-08-12 15:41:40 UTC
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026081257-CVE-2026-68446-e066@gregkh/T