Linux Kernel up to 6.6.121/6.12.66/6.18.6/6.19-rc5 dmaengine gpi_peripheral_config memory leak

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5.5$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in Linux Kernel up to 6.6.121/6.12.66/6.18.6/6.19-rc5. Affected by this vulnerability is the function gpi_peripheral_config of the component dmaengine. Executing a manipulation can lead to memory leak. This vulnerability appears as CVE-2026-23026. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.6.121/6.12.66/6.18.6/6.19-rc5. It has been declared as critical. This vulnerability affects the function gpi_peripheral_config of the component dmaengine. 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. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: dmaengine: qcom: gpi: Fix memory leak in gpi_peripheral_config() Fix a memory leak in gpi_peripheral_config() where the original memory pointed to by gchan->config could be lost if krealloc() fails. The issue occurs when: 1. gchan->config points to previously allocated memory 2. krealloc() fails and returns NULL 3. The function directly assigns NULL to gchan->config, losing the reference to the original memory 4. The original memory becomes unreachable and cannot be freed Fix this by using a temporary variable to hold the krealloc() result and only updating gchan->config when the allocation succeeds. Found via static analysis and code review.

The advisory is available at git.kernel.org. This vulnerability was named CVE-2026-23026 since 01/13/2026. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 297480 (Linux Distros Unpatched Vulnerability : CVE-2026-23026), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.6.122, 6.12.67, 6.18.7 or 6.19-rc6 eliminates this vulnerability. Applying the patch 6bf4ef078fd11910988889a6c0b3698d2e0c89af/01b1d781394fc9b83015e3a3cd46b17bda842bd8/55a67ba5ac4cebfd54cc8305d4d57a0f1dfe6a85/3f747004bbd641131d9396d87b5d2d3d1e182728 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 (297480), EUVD (EUVD-2026-5068) and CERT Bund (WID-SEC-2026-0280). If you want to get best quality of vulnerability data, you may have to visit VulDB.

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: 5.6
VulDB Meta Temp Score: 5.5

VulDB Base Score: 5.7
VulDB Temp Score: 5.5
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: 297480
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-23026

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.6.122/6.12.67/6.18.7/6.19-rc6
Patch: 6bf4ef078fd11910988889a6c0b3698d2e0c89af/01b1d781394fc9b83015e3a3cd46b17bda842bd8/55a67ba5ac4cebfd54cc8305d4d57a0f1dfe6a85/3f747004bbd641131d9396d87b5d2d3d1e182728

Timelineinfo

01/13/2026 CVE reserved
01/31/2026 +18 days Advisory disclosed
01/31/2026 +0 days VulDB entry created
03/26/2026 +54 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-23026 (🔒)
GCVE (CVE): GCVE-0-2026-23026
GCVE (VulDB): GCVE-100-343618
EUVD: 🔒
CERT Bund: WID-SEC-2026-0280 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 01/31/2026 15:25
Updated: 03/26/2026 02:11
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), 03/26/2026 02:11 (11)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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