CVE-2022-39854

Secure-memory access via improper IOMMU protection

Published Oct 7, 2022 · Updated Aug 3, 2024

Improper access control in the IOMMU of selected Samsung Exynos devices before SMR Oct-2022 Release 1 allows local users to access secure memory. The IOMMU protection logic fails to reject invalid memory accesses, permitting unauthorized operations against secure memory. The gate is local high privileges and high attack complexity; successful access compromises confidentiality, integrity, and device availability.

CVSS severity6.4
Medium
EPSS probability0.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in the IOMMU of selected Samsung Exynos devices before SMR Oct-2022 Release 1 allows local users to access secure memory. The IOMMU protection logic fails to reject invalid memory accesses, permitting unauthorized operations against secure memory. The gate is local high privileges and high attack complexity; successful access compromises confidentiality, integrity, and device availability.

The record

CVE
CVE-2022-39854
Published
Oct 7, 2022
Updated
Aug 3, 2024
Vendor
Samsung Electronics Co., Ltd.
Product
Samsung Mobile Devices
Classifications
CWE-284
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Oct 7, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record 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=Q(10), R(11), S(12) <SMR Oct-2022 Release 1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Samsung Electronics Co., Ltd. · Samsung Mobile Devicesversion=Q(10), R(11), S(12) <SMR Oct-2022 Release 1

Published CVSS scores

6.4Samsung MobileCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Control

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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