CVE-2022-50828

Stack over-read via unterminated firmware clock name

Published Dec 30, 2025 · Updated Dec 30, 2025

An out-of-bounds read in Linux's ZynqMP clock driver causes a stack over-read during device probing when firmware returns a long clock name. The Linux-ATF interface returns a fixed 16-byte SMC payload without a terminating NUL for names over 15 bytes, and zynqmp_clock_probe passes the unterminated stack buffer to strncpy. Reachability requires ZynqMP or Versal hardware and a firmware-supplied long clock name; public records establish the KASAN-detected read but not attacker control or data exposure.

CVSS severityUnavailable
Unscored
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

An out-of-bounds read in Linux's ZynqMP clock driver causes a stack over-read during device probing when firmware returns a long clock name. The Linux-ATF interface returns a fixed 16-byte SMC payload without a terminating NUL for names over 15 bytes, and zynqmp_clock_probe passes the unterminated stack buffer to strncpy. Reachability requires ZynqMP or Versal hardware and a firmware-supplied long clock name; public records establish the KASAN-detected read but not attacker control or data exposure.

The record

CVE
CVE-2022-50828
Published
Dec 30, 2025
Updated
Dec 30, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Dec 30, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 30, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <0a07b13af04d0db7325018aaa83b5ffe864790c9
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <5dbfcf7b080306b65d9f756fadf46c9495793750
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <bce41e4ac6f5ca3b22a07e8cdadc12044bbf9d3b
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d66fea97671fcb516bd6d34bcc033f650ac7ee91
  5. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d9e2585c3bcecb1c83febad31b9f450e93d2509e
  6. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <dd80fb2dbf1cd8751efbe4e53e54056f56a9b115

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <0a07b13af04d0db7325018aaa83b5ffe864790c9; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <5dbfcf7b080306b65d9f756fadf46c9495793750; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <bce41e4ac6f5ca3b22a07e8cdadc12044bbf9d3b; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d66fea97671fcb516bd6d34bcc033f650ac7ee91; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d9e2585c3bcecb1c83febad31b9f450e93d2509e; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <dd80fb2dbf1cd8751efbe4e53e54056f56a9b115

Published CVSS scores

No CVSS assessment is available in this record.

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.

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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)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

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Technologies

Your stack

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Your stack

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