Linux Kernel up to 6.19.12 net privilege escalation

CVSS Meta Temp Score
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in Linux Kernel up to 6.19.12. This affects an unknown part of the component net. The manipulation results in an unknown weakness. This vulnerability is known as CVE-2026-31670. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as critical has been found in Linux Kernel up to 6.19.12. Affected is an unknown part of the component net. The impact remains unknown. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: net: rfkill: prevent unlimited numbers of rfkill events from being created Userspace can create an unlimited number of rfkill events if the system is so configured, while not consuming them from the rfkill file descriptor, causing a potential out of memory situation. Prevent this from bounding the number of pending rfkill events at a "large" number (i.e. 1000) to prevent abuses like this.

The advisory is shared for download at git.kernel.org. This vulnerability is traded as CVE-2026-31670 since 03/09/2026. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 07/17/2026).

The vulnerability scanner Nessus provides a plugin with the ID 326222 (EulerOS 2.0 SP12 : kernel (EulerOS-SA-2026-2535)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.10.253, 5.15.203, 6.1.169, 6.6.135, 6.12.82, 6.18.23 or 6.19.13 eliminates this vulnerability. Applying the patch 4bcd1615a4e2a185ae9edd27b4143d7dfa7134f4/b1e0c8d3ab58a0161db487bf5fc47adfcaf5d5ca/e3842779547c83150569071d9980517cc9029fc0/673d2a3eef6e0ee9736501a150c9e4024a4e60a6/82843afc19012a29ba863961ef494165aa1a88f4/a8c26800e0220e1550af012f5a20e50f5c78864d/80ce4cb026f0a4c4532b6cad827b44debda6256a/ea245d78dec594372e27d8c79616baf49e98a4a1 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 (326222) and EUVD (EUVD-2026-25563). Once again VulDB remains the best source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.4

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

NVD Base Score: 5.5
NVD Vector: 🔒

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: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 326222
Nessus Name: EulerOS 2.0 SP12 : kernel (EulerOS-SA-2026-2535)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 5.10.253/5.15.203/6.1.169/6.6.135/6.12.82/6.18.23/6.19.13
Patch: 4bcd1615a4e2a185ae9edd27b4143d7dfa7134f4/b1e0c8d3ab58a0161db487bf5fc47adfcaf5d5ca/e3842779547c83150569071d9980517cc9029fc0/673d2a3eef6e0ee9736501a150c9e4024a4e60a6/82843afc19012a29ba863961ef494165aa1a88f4/a8c26800e0220e1550af012f5a20e50f5c78864d/80ce4cb026f0a4c4532b6cad827b44debda6256a/ea245d78dec594372e27d8c79616baf49e98a4a1

Timelineinfo

03/09/2026 CVE reserved
04/24/2026 +45 days Advisory disclosed
04/24/2026 +0 days VulDB entry created
07/17/2026 +84 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-31670 (🔒)
GCVE (CVE): GCVE-0-2026-31670
GCVE (VulDB): GCVE-100-359460
EUVD: 🔒

Entryinfo

Created: 04/24/2026 18:58
Updated: 07/17/2026 10:03
Changes: 04/24/2026 18:58 (57), 04/24/2026 19:35 (1), 07/10/2026 13:45 (2), 07/17/2026 10:03 (10)
Complete: 🔍
Cache ID: 216::103

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