Linux Kernel up to 6.18.6/6.19-rc5 LoongArch kvm_ipi_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 was found in Linux Kernel up to 6.18.6/6.19-rc5. It has been classified as critical. This vulnerability affects the function kvm_ipi_destroy of the component LoongArch. This manipulation causes memory leak. This vulnerability is handled as CVE-2026-23028. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as critical was found in Linux Kernel up to 6.18.6/6.19-rc5. Affected by this vulnerability is the function kvm_ipi_destroy of the component LoongArch. The manipulation with an unknown input leads to a memory leak vulnerability. The CWE definition for the vulnerability is CWE-401. The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory. As an impact it is known to affect availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: LoongArch: KVM: Fix kvm_device leak in kvm_ipi_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_ipi_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 known as CVE-2026-23028 since 01/13/2026. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 297485 (Linux Distros Unpatched Vulnerability : CVE-2026-23028), 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 5defcc2f9c22e6e09b5be68234ad10f4ba0292b7/0bf58cb7288a4d3de6d8ecbb3a65928a9362bf21 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 (297485), EUVD (EUVD-2026-5066) and CERT Bund (WID-SEC-2026-0280). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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: 297485
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-23028

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.18.7/6.19-rc6
Patch: 5defcc2f9c22e6e09b5be68234ad10f4ba0292b7/0bf58cb7288a4d3de6d8ecbb3a65928a9362bf21

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-2026-23028 (🔒)
GCVE (CVE): GCVE-0-2026-23028
GCVE (VulDB): GCVE-100-343621
EUVD: 🔒
CERT Bund: WID-SEC-2026-0280 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 01/31/2026 15:25
Updated: 02/02/2026 20:51
Changes: 01/31/2026 15:25 (59), 02/01/2026 01:18 (1), 02/01/2026 03:51 (2), 02/02/2026 20:51 (7)
Complete: 🔍
Cache ID: 216::103

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