PT-2026-1248 · Linux+2 · Linux Kernel+2
Published
2025-11-04
·
Updated
2026-04-06
·
CVE-2025-68760
CVSS v2.0
2.7
Low
| Vector | AV:A/AC:L/Au:S/C:P/I:N/A:N |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
The Linux kernel contains a flaw in the iommu/amd module related to boundary checks within the
iommu mmio show function. Specifically, the iommu mmio write function validates user-provided offsets, assuming a 4-byte access size. However, iommu mmio show uses readq(), which performs an 8-byte read. This discrepancy can lead to a 4-byte out-of-bounds read if a user provides an offset equal to mmio phys end - 4, as the check passes despite the larger read size. The vulnerable check is: iommu->dbg mmio offset > iommu->mmio phys end - 4.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Out of bounds Read
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Weakness Enumeration
Related Identifiers
Affected Products
Linuxmint
Linux Kernel
Ubuntu