Bug 2414322 (CVE-2025-40111)

Summary: CVE-2025-40111 kernel: drm/vmwgfx: Fix Use-after-free in validation
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Priority: medium    
Version: unspecifiedKeywords: Security
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OS: Linux   
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A flaw was found in the Linux kernel’s VMware graphics driver (drm/vmwgfx). During the validation process, nodes stored in a duplicates-hashtable come from an arena allocator, which is cleared at the end of vmw_execbuf_process. One node was not properly removed in vmw_validation_drop_ht because its associated resource was destroyed too early, leading to a use-after-free.
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Description OSIDB Bzimport 2025-11-12 02:01:14 UTC 
In the Linux kernel, the following vulnerability has been resolved:

drm/vmwgfx: Fix Use-after-free in validation

Nodes stored in the validation duplicates hashtable come from an arena
allocator that is cleared at the end of vmw_execbuf_process. All nodes
are expected to be cleared in vmw_validation_drop_ht but this node escaped
because its resource was destroyed prematurely.
Comment 1 Alexander B 2025-11-13 17:27:30 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025111229-CVE-2025-40111-23d1@gregkh/T