Linux Kernel up to 6.6.134/6.12.81/6.18.22/6.19.12 pmdomain privilege escalation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Linux Kernel up to 6.6.134/6.12.81/6.18.22/6.19.12. The impacted element is an unknown function of the component pmdomain. The manipulation leads to an unknown weakness. This vulnerability is referenced as CVE-2026-31655. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.6.134/6.12.81/6.18.22/6.19.12 and classified as critical. This issue affects an unknown functionality of the component pmdomain. The impact remains unknown. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: pmdomain: imx8mp-blk-ctrl: Keep the NOC_HDCP clock enabled Keep the NOC_HDCP clock always enabled to fix the potential hang caused by the NoC ADB400 port power down handshake.

The advisory is shared at git.kernel.org. The identification of this vulnerability is CVE-2026-31655 since 03/09/2026. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 06/20/2026).

The vulnerability scanner Nessus provides a plugin with the ID 321588 (SUSE SLES16 Security Update : kernel (SUSE-SU-2026:22127-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.6.135, 6.12.82, 6.18.23 or 6.19.13 eliminates this vulnerability. Applying the patch 80fd0de89805a3f92dc320f5ab5a18007c260374/3086374e8bc7fd65f2cc62ef52351c6d662f1543/e44919669f07b8f113ad49a248b44ca4f119bc94/d1ef779d02b5df4e8bff4083b20bfea587b43c4b/e91d5f94acf68618ea3ad9c92ac28614e791ae7d 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 vulnerability database at Tenable (321588). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Privilege escalation
CWE: Unknown
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: 321588
Nessus Name: SUSE SLES16 Security Update : kernel (SUSE-SU-2026:22127-1)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.6.135/6.12.82/6.18.23/6.19.13
Patch: 80fd0de89805a3f92dc320f5ab5a18007c260374/3086374e8bc7fd65f2cc62ef52351c6d662f1543/e44919669f07b8f113ad49a248b44ca4f119bc94/d1ef779d02b5df4e8bff4083b20bfea587b43c4b/e91d5f94acf68618ea3ad9c92ac28614e791ae7d

Timelineinfo

03/09/2026 CVE reserved
04/24/2026 +45 days Advisory disclosed
04/24/2026 +0 days VulDB entry created
06/20/2026 +57 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-31655 (🔒)
GCVE (CVE): GCVE-0-2026-31655
GCVE (VulDB): GCVE-100-359465

Entryinfo

Created: 04/24/2026 18:59
Updated: 06/20/2026 17:38
Changes: 04/24/2026 18:59 (57), 06/20/2026 17:38 (2)
Complete: 🔍
Cache ID: 216::103

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

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