CVE-2026-52952

Kernel memory corruption via stale IOMMU domain pointer

Published Jun 24, 2026 · Updated Jun 24, 2026

Use-after-free in the Linux kernel IOMMU subsystem 7.0 through 7.0.9 allows local users to corrupt kernel memory during PCI device reset. The __iommu_group_set_domain_internal() recovery fence rejects no-fail detach and teardown callers without updating group->domain, leaving it pointed at freed memory for pci_dev_reset_iommu_done() to reattach. Exploitation requires low-privileged local access and an IOMMU group entering recovery during a reset; successful reuse can crash the kernel or compromise kernel execution.

CVSS severity8.8
High
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in the Linux kernel IOMMU subsystem 7.0 through 7.0.9 allows local users to corrupt kernel memory during PCI device reset. The __iommu_group_set_domain_internal() recovery fence rejects no-fail detach and teardown callers without updating group->domain, leaving it pointed at freed memory for pci_dev_reset_iommu_done() to reattach. Exploitation requires low-privileged local access and an IOMMU group entering recovery during a reset; successful reuse can crash the kernel or compromise kernel execution.

The record

CVE
CVE-2026-52952
Published
Jun 24, 2026
Updated
Jun 24, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-617, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 24, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=7.0
  2. Affected versionversion=c279e83953d937470f8a6e69b69f62608714f13f <5474e6e17a262db45c60575c73f70210f5c7001f
  3. Affected versionversion=c279e83953d937470f8a6e69b69f62608714f13f <8fc289e809f3eb7e36cadc4684ab6fad747a5a93

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=7.0; version=c279e83953d937470f8a6e69b69f62608714f13f <5474e6e17a262db45c60575c73f70210f5c7001f; version=c279e83953d937470f8a6e69b69f62608714f13f <8fc289e809f3eb7e36cadc4684ab6fad747a5a93

Published CVSS scores

8.8Linux kernel CNACVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-617Reachable Assertion
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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