PT-2025-44126 · Linux+7 · Linux Kernel+7
Published
2025-09-26
·
Updated
2026-05-07
·
CVE-2025-40058
CVSS v2.0
4.5
Medium
| Vector | AV:L/AC:H/Au:S/C:N/I:P/A:C |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
The Linux kernel contains a flaw in the IOMMU/VT-d component related to dirty page tracking. Dirty page tracking depends on the IOMMU atomically updating the dirty bit in the paging-structure entry, which requires coherent paging-structure memory between the IOMMU and the CPU. The Intel VT-d specification indicates that attempting to atomically update bits in a non-snooped paging-structure entry will result in a non-recoverable fault. The issue arises when an IOMMU is incorrectly configured for dirty page tracking while operating in an incoherent mode. This can occur if SSADS is supported without both ecap slads and ecap smpwc being supported.
Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Buffer Overflow
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Weakness Enumeration
Related Identifiers
Affected Products
Almalinux
Intel Vt-D
Linuxmint
Linux Kernel
Red Hat
Rocky Linux
Suse
Ubuntu