# CVE-2025-71202: iommu/sva: invalidate stale IOTLB entries for kernel address space

CVE-2025-71202 is fixed in linux on 1 platform by DEBIAN-CVE-2025-71202 (version 6.18.8-1), released February 14, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2025-71202
- Priority: Routine
- CVSS: 5.5 (Moderate)
- EPSS: 0.0016
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Feb 14, 2026
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-71202

## Description

In the Linux kernel, the following vulnerability has been resolved:  iommu/sva: invalidate stale IOTLB entries for kernel address space  Introduce a new IOMMU interface to flush IOTLB paging cache entries for the CPU kernel address space.  This interface is invoked from the x86 architecture code that manages combined user and kernel page tables, specifically before any kernel page table page is freed and reused.  This addresses the main issue with vfree() which is a common occurrence and can be triggered by unprivileged users.  While this resolves the primary problem, it doesn't address some extremely rare case related to memory unplug of memory that was present as reserved memory at boot, which cannot be triggered by unprivileged users.  The discussion can be found at the link below.  Enable SVA on x86 architecture since the IOMMU can now receive notification to flush the paging cache before freeing the CPU kernel page table pages.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 14 | 6.18.8-1 | [DEBIAN-CVE-2025-71202](https://patchblox.com/security/data/fix/linux/debian-cve-2025-71202.md) | Feb 14, 2026 |

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Data as of 2026-11-08T06:59:42Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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