Linux Kernel up to 6.18.5/6.19-rc4 idpf idpf_vc_core_deinit memory leak

CVSS Meta Temp Score
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CTI Interest Score
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5.0$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Linux Kernel up to 6.18.5/6.19-rc4. The impacted element is the function idpf_vc_core_deinit of the component idpf. The manipulation leads to memory leak. This vulnerability is referenced as CVE-2026-23022. No exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.18.5/6.19-rc4 and classified as critical. This issue affects the function idpf_vc_core_deinit of the component idpf. The manipulation with an unknown input leads to a memory leak vulnerability. Using CWE to declare the problem leads to CWE-401. The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory. Impacted is availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: idpf: fix memory leak in idpf_vc_core_deinit() Make sure to free hw->lan_regs. Reported by kmemleak during reset: unreferenced object 0xff1b913d02a936c0 (size 96): comm "kworker/u258:14", pid 2174, jiffies 4294958305 hex dump (first 32 bytes): 00 00 00 c0 a8 ba 2d ff 00 00 00 00 00 00 00 00 ......-......... 00 00 40 08 00 00 00 00 00 00 25 b3 a8 ba 2d ff ..@.......%...-. backtrace (crc 36063c4f): __kmalloc_noprof+0x48f/0x890 idpf_vc_core_init+0x6ce/0x9b0 [idpf] idpf_vc_event_task+0x1fb/0x350 [idpf] process_one_work+0x226/0x6d0 worker_thread+0x19e/0x340 kthread+0x10f/0x250 ret_from_fork+0x251/0x2b0 ret_from_fork_asm+0x1a/0x30

The advisory is shared at git.kernel.org. The identification of this vulnerability is CVE-2026-23022 since 01/13/2026. The exploitation is known to be difficult. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 297465 (Linux Distros Unpatched Vulnerability : CVE-2026-23022), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.18.6 or 6.19-rc5 eliminates this vulnerability. Applying the patch 23391db8a00c23854915b8b72ec1aa10080aa540/e111cbc4adf9f9974eed040aeece7e17460f6bff 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 (297465), EUVD (EUVD-2026-5072) 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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Version

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.1
VulDB Meta Temp Score: 5.0

VulDB Base Score: 4.8
VulDB Temp Score: 4.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔒

CVSSv2info

AVACAuCIA
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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: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 297465
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-23022

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.18.6/6.19-rc5
Patch: 23391db8a00c23854915b8b72ec1aa10080aa540/e111cbc4adf9f9974eed040aeece7e17460f6bff

Timelineinfo

01/13/2026 CVE reserved
01/31/2026 +18 days Advisory disclosed
01/31/2026 +0 days VulDB entry created
03/25/2026 +53 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-23022 (🔒)
GCVE (CVE): GCVE-0-2026-23022
GCVE (VulDB): GCVE-100-343625
EUVD: 🔒
CERT Bund: WID-SEC-2026-0280 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 01/31/2026 15:27
Updated: 03/25/2026 18:03
Changes: 01/31/2026 15:27 (59), 02/01/2026 03:33 (1), 02/01/2026 07:45 (2), 02/02/2026 18:12 (7), 03/25/2026 18:03 (12)
Complete: 🔍
Cache ID: 216::103

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

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