8.8

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

Modified
AliasesUBUNTU-CVE-2025-71202DEBIAN-CVE-2025-71202CGA-3qrr-pjrx-7g58
Published 14-02-2026Last modified 19-10-2026

Vulnerability summary

CVE-2025-71202 is a high (CVSS 8.8) Use of Uninitialized Variable vulnerability in linux. EPSS estimates a 0.16% chance of exploitation in the next 30 days, higher than 5.5% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 8.8, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
8.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.16%
0%100%
Low · +0.04 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1 · Related 2
USN-8781-1CGA-HHF4-WQQF-R5HF

Timeline

  1. 14-02-2026
    PublishedVulnerability first disclosed.
  2. 19-10-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

6 scores · 5 sources · 2 versions

EPSS trend

Probability

0.16%

Chance of exploitation in the next 30 days

Percentile

6%

Versus all other CVEs

30-day change

Increase +0.04 pp

From 0.12% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu159 products
  • linuxAll versions (No fix recorded)
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Chainguard5 products
  • linux-aws-6.12< 6.12.78-r0 | < 6.12.77-r1 | < 6.12.77-r2 | < 6.12.80-r0
  • linux-azure-6.12< 6.12.77-r1 | < 6.12.78-r0 | < 6.12.80-r0 | < 6.12.77-r2
  • linux-gcp-6.12< 6.12.78-r0 | < 6.12.77-r2 | < 6.12.80-r0 | < 6.12.77-r1
  • linux-qemu-6.12< 6.12.77-r1 | < 6.12.78-r0 | < 6.12.77-r2 | < 6.12.80-r0
  • linux-vmware-6.12< 6.12.78-r0 | < 6.12.77-r1 | < 6.12.77-r2 | < 6.12.80-r0
Linux2 products
  • linux≥ 2f26e0a9c9860db290d63e9d85c2c8c09813677f, < 9f0a7ab700f8620e433b05c57fbd26c92ea186d9 | ≥ 2f26e0a9c9860db290d63e9d85c2c8c09813677f, < e37d5a2d60a338c5917c45296bac65da1382eda5 | 4.4
  • linux_kernel≥ 4.4, < 6.18.7
Debian1 product
  • linuxAll versions (No fix recorded) | < 6.18.8-1

4 vendors · 167 products

References

10 links