Linux Kernel up to 6.18.6/6.19-rc5 LoongArch kvm_pch_pic_destroy memory leak

CVSS Meta Temp Score
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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Linux Kernel up to 6.18.6/6.19-rc5. Affected is the function kvm_pch_pic_destroy of the component LoongArch. Performing a manipulation results in memory leak. This vulnerability is reported as CVE-2026-23027. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.18.6/6.19-rc5. It has been classified as critical. This affects the function kvm_pch_pic_destroy of the component LoongArch. The manipulation with an unknown input leads to a memory leak vulnerability. CWE is classifying the issue as CWE-401. The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory. This is going to have an impact on availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: LoongArch: KVM: Fix kvm_device leak in kvm_pch_pic_destroy() In kvm_ioctl_create_device(), kvm_device has allocated memory, kvm_device->destroy() seems to be supposed to free its kvm_device struct, but kvm_pch_pic_destroy() is not currently doing this, that would lead to a memory leak. So, fix it.

The advisory is shared at git.kernel.org. This vulnerability is uniquely identified as CVE-2026-23027 since 01/13/2026. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 297466 (Linux Distros Unpatched Vulnerability : CVE-2026-23027), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.18.7 or 6.19-rc6 eliminates this vulnerability. Applying the patch fc53a66227af08d868face4b33fa8b2e1ba187ed/1cf342a7c3adc5877837b53bbceb5cc9eff60bbf is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (297466), EUVD (EUVD-2026-5067) and CERT Bund (WID-SEC-2026-0280). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Affected

  • Open Source Linux Kernel

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.5

VulDB Base Score: 5.7
VulDB Temp Score: 5.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Memory leak
CWE: CWE-401 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 297466
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-23027

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.18.7/6.19-rc6
Patch: fc53a66227af08d868face4b33fa8b2e1ba187ed/1cf342a7c3adc5877837b53bbceb5cc9eff60bbf

Timelineinfo

01/13/2026 CVE reserved
01/31/2026 +18 days Advisory disclosed
01/31/2026 +0 days VulDB entry created
02/02/2026 +2 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-23027 (🔒)
GCVE (CVE): GCVE-0-2026-23027
GCVE (VulDB): GCVE-100-343617
EUVD: 🔒
CERT Bund: WID-SEC-2026-0280 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 01/31/2026 15:24
Updated: 02/02/2026 20:51
Changes: 01/31/2026 15:24 (59), 02/01/2026 01:18 (1), 02/01/2026 07:45 (2), 02/02/2026 20:51 (7)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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