CVE-2023-53807

Kernel Oops via error-pointer dereference

Published Dec 9, 2025 · Updated May 11, 2026

Error-pointer dereference in the Linux clocking-wizard driver allows attackers to trigger a kernel Oops during device initialization. The clk_wzrd_register_divider() function dereferences the error pointer returned when devm_clk_hw_register() fails instead of returning that error. Reachability requires registration of a Xilinx clocking-wizard divider to fail; no attacker-controlled path or impact beyond the Oops is documented.

CVSS severityUnavailable
Unscored
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Error-pointer dereference in the Linux clocking-wizard driver allows attackers to trigger a kernel Oops during device initialization. The clk_wzrd_register_divider() function dereferences the error pointer returned when devm_clk_hw_register() fails instead of returning that error. Reachability requires registration of a Xilinx clocking-wizard divider to fail; no attacker-controlled path or impact beyond the Oops is documented.

The record

CVE
CVE-2023-53807
Published
Dec 9, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Dec 9, 2025CVE publishedPublication date reported by the CVE source.
  2. May 11, 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=5.13
  2. Affected versionversion=5a853722eb32188647a541802d51d0db423b9baf <25dbdfb7b71ef8601d00c6d9a2b1a96de28b30c5
  3. Affected versionversion=5a853722eb32188647a541802d51d0db423b9baf <2f276dd9c0f835242836d9f6823035158ce2585c
  4. Affected versionversion=5a853722eb32188647a541802d51d0db423b9baf <9c632a6396505a019ea6d12b5ab45e659a542a93
  5. Affected versionversion=5a853722eb32188647a541802d51d0db423b9baf <b35cb0c05b8dafe23ae5e8b605a91b88bcf4aba7
  6. Affected versionversion=5a853722eb32188647a541802d51d0db423b9baf <f078a65ebf930f4305e3c415a8338d22391642c9

What conditions does exploitation require?

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

What is affected?

The Linux Kernel Organization · Linuxversion=5.13; version=5a853722eb32188647a541802d51d0db423b9baf <25dbdfb7b71ef8601d00c6d9a2b1a96de28b30c5; version=5a853722eb32188647a541802d51d0db423b9baf <2f276dd9c0f835242836d9f6823035158ce2585c; version=5a853722eb32188647a541802d51d0db423b9baf <9c632a6396505a019ea6d12b5ab45e659a542a93; version=5a853722eb32188647a541802d51d0db423b9baf <b35cb0c05b8dafe23ae5e8b605a91b88bcf4aba7; version=5a853722eb32188647a541802d51d0db423b9baf <f078a65ebf930f4305e3c415a8338d22391642c9

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

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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