PT-2026-2610 · Linux+3 · Linux Kernel+3
CVE-2025-71089
·
Published
2025-10-22
·
Updated
2026-07-15
CVSS v3.1
7.8
High
| Vector | AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
The Linux kernel contains a flaw related to IOMMU Shared Virtual Addressing (SVA). The kernel lacks a mechanism to notify the IOMMU of changes to kernel page tables when pages are freed and reused, potentially leading to use-after-free or write-after-free conditions. This can occur when the IOMMU caches kernel page table entries, and those entries become stale after the corresponding memory is freed and reallocated. This could allow an attacker to gain arbitrary physical memory DMA access or escalate privileges. The issue arises because the IOMMU continues to walk kernel-only page tables, caching intermediate entries even in unprivileged SVA contexts.
Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Use After Free
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Related Identifiers
Affected Products
Linuxmint
Linux Kernel
Rocky Linux
Ubuntu