PT-2025-53969 · Linux+1 · Linux Kernel+1
Published
2022-01-01
·
Updated
2026-04-20
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CVE-2022-50851
None
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Name of the Vulnerable Software and Affected Versions
Linux kernel versions prior to 6.0.0-rc1home lulu 2452 lulu7 vhost+
Description
The Linux kernel contains a flaw within the vhost vdpa component related to unmapping large memory regions. During testing with vIOMMU, a crash could occur when a guest attempted to unmap very large memory areas. To address this, a new function,
vhost vdpa general unmap(), was introduced to specifically handle unmapping memory saved in the iotlb. The issue manifests as an invalid opcode during the unmapping process, potentially leading to system instability. The vulnerable code path involves the intel iommu unmap pages(), iommu unmap(), iommu unmap(), and vhost vdpa unmap() functions.Recommendations
Update to a newer version of the Linux kernel that includes the fix for this vulnerability.
Exploit
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Related Identifiers
Affected Products
Debian
Linux Kernel