Bug 2420343 (CVE-2022-50667)

Summary: CVE-2022-50667 kernel: drm/vmwgfx: Fix memory leak in vmw_mksstat_add_ioctl()
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Priority: low    
Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A memory leak vulnerability was found in the VMware graphics driver (vmwgfx) in the Linux kernel. In vmw_mksstat_add_ioctl(), when copying the description string from userspace fails with -EFAULT, the allocated page for the instance descriptor is not freed. This leads to memory leakage that can cause resource exhaustion.
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Description OSIDB Bzimport 2025-12-09 02:04:17 UTC 
In the Linux kernel, the following vulnerability has been resolved:

drm/vmwgfx: Fix memory leak in vmw_mksstat_add_ioctl()

If the copy of the description string from userspace fails, then the page
for the instance descriptor doesn't get freed before returning -EFAULT,
which leads to a memleak.
Comment 1 Alexander B 2025-12-09 19:06:50 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025120945-CVE-2022-50667-01f6@gregkh/T