CVE-2026-23027Hinoki check available

Kernel memory leak via unfreed KVM device

Published Jan 31, 2026 · Updated Jan 31, 2026

Memory leak in LoongArch KVM in Linux Kernel 6.13 through 6.18.6 allows local users to consume kernel memory via device creation. kvm_pch_pic_destroy() frees the PCH PIC state but fails to free the kvm_device allocated by kvm_ioctl_create_device(). Access to LoongArch KVM device creation is required, and repeated create-destroy cycles leave kernel allocations unreclaimed.

CVSS severityUnavailable
Unscored
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Memory leak in LoongArch KVM in Linux Kernel 6.13 through 6.18.6 allows local users to consume kernel memory via device creation. kvm_pch_pic_destroy() frees the PCH PIC state but fails to free the kvm_device allocated by kvm_ioctl_create_device(). Access to LoongArch KVM device creation is required, and repeated create-destroy cycles leave kernel allocations unreclaimed.

The record

CVE
CVE-2026-23027
Published
Jan 31, 2026
Updated
Jan 31, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
Unavailable
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Jan 31, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 31, 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=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <1cf342a7c3adc5877837b53bbceb5cc9eff60bbf
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <fc53a66227af08d868face4b33fa8b2e1ba187ed

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linux Kernelversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <1cf342a7c3adc5877837b53bbceb5cc9eff60bbf; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <fc53a66227af08d868face4b33fa8b2e1ba187ed

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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

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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