CVE-2023-53361

Kernel panic via misclassified huge page tables

Published Sep 17, 2025 · Updated Sep 17, 2025

Denial of service in the LoongArch memory-management code in Linux allows local users to panic the kernel during KSM processing. The absent pmd_leaf() and pud_leaf() definitions cause the page-table walker to treat huge-page entries as non-leaf entries and reach pte_present(), which panics. The trigger requires an affected LoongArch kernel to process a KSM workload containing a huge page-table entry; the documented consequence is a host crash, not data access or code execution.

CVSS severityUnavailable
Unscored
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in the LoongArch memory-management code in Linux allows local users to panic the kernel during KSM processing. The absent pmd_leaf() and pud_leaf() definitions cause the page-table walker to treat huge-page entries as non-leaf entries and reach pte_present(), which panics. The trigger requires an affected LoongArch kernel to process a KSM workload containing a huge page-table entry; the documented consequence is a host crash, not data access or code execution.

The record

CVE
CVE-2023-53361
Published
Sep 17, 2025
Updated
Sep 17, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 17, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 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?

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

  1. Affected versionversion=09cfefb7fa70c3af011b0db0a513fd80b2f18abc <303be4b33562a5b689261ced1616bf16ad49efa7
  2. Affected versionversion=09cfefb7fa70c3af011b0db0a513fd80b2f18abc <593ad636bac41d67bdc44c83c6945015471313fc
  3. Affected versionversion=09cfefb7fa70c3af011b0db0a513fd80b2f18abc <77aaf22a9200b9557793c96debead911b80acc1c
  4. Affected versionversion=09cfefb7fa70c3af011b0db0a513fd80b2f18abc <cc9bf2d62f196ec600f9e6ea3a6ced11f54a2df9
  5. Affected versionversion=5.19

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=09cfefb7fa70c3af011b0db0a513fd80b2f18abc <303be4b33562a5b689261ced1616bf16ad49efa7; version=09cfefb7fa70c3af011b0db0a513fd80b2f18abc <593ad636bac41d67bdc44c83c6945015471313fc; version=09cfefb7fa70c3af011b0db0a513fd80b2f18abc <77aaf22a9200b9557793c96debead911b80acc1c; version=09cfefb7fa70c3af011b0db0a513fd80b2f18abc <cc9bf2d62f196ec600f9e6ea3a6ced11f54a2df9; version=5.19

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499Endpoint Denial of Service

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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