CVE-2023-31339

Data disclosure and service interruption via clock index

Published Aug 13, 2024 · Updated Aug 15, 2024

Out-of-bounds read in AMD Zynq UltraScale+ MPSoC/RFSoC before 2023.2 allows local users with high privileges to disclose TF-A RAM data. The pm_api_get_name function uses an unvalidated clock_id as an index into the ext_clocks array, permitting reads beyond its bounds. Exploitation requires high privileges and user interaction; the resulting read can leak data or interrupt service.

CVSS severity4.8
Medium
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in AMD Zynq UltraScale+ MPSoC/RFSoC before 2023.2 allows local users with high privileges to disclose TF-A RAM data. The pm_api_get_name function uses an unvalidated clock_id as an index into the ext_clocks array, permitting reads beyond its bounds. Exploitation requires high privileges and user interaction; the resulting read can leak data or interrupt service.

The record

CVE
CVE-2023-31339
Published
Aug 13, 2024
Updated
Aug 15, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-20, CWE-125
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Aug 13, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 15, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.8Advanced Micro Devices, Inc.CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:L/I:N/A:H
5.8NIST National Vulnerability DatabaseCVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:N/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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation
CWE-125Out-of-bounds Read

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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