Linux Kernel up to 6.19.2 fbdev privilege escalation

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.0$0-$5k0.00

Summaryinfo

A vulnerability has been found in Linux Kernel up to 6.19.2 and classified as critical. The impacted element is an unknown function of the component fbdev. Performing a manipulation results in an unknown weakness. This vulnerability is cataloged as CVE-2026-23236. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.19.2. It has been classified as critical. This affects an unknown part of the component fbdev. The impact remains unknown. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: fbdev: smscufx: properly copy ioctl memory to kernelspace The UFX_IOCTL_REPORT_DAMAGE ioctl does not properly copy data from userspace to kernelspace, and instead directly references the memory, which can cause problems if invalid data is passed from userspace. Fix this all up by correctly copying the memory before accessing it within the kernel.

The advisory is shared at git.kernel.org. This vulnerability is uniquely identified as CVE-2026-23236 since 01/13/2026. 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 06/24/2026).

The vulnerability scanner Nessus provides a plugin with the ID 301081 (Linux Distros Unpatched Vulnerability : CVE-2026-23236), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.10.251, 5.15.201, 6.1.164, 6.6.127, 6.12.74, 6.18.13, 6.19.3 or 7.0-rc1 eliminates this vulnerability. Applying the patch 061cfeb560aa3ddc174153dbe5be9d0b55eb7248/6167af934f956d3ae1e06d61f45cd0d1004bbe1a/a0321e6e58facb39fe191caa0e52ed9aab6a48fe/0634e8d650993602fc5b389ff7ac525f6542e141/52917e265aa5f848212f60fc50fc504d8ef12866/1c008ad0f0d1c1523902b9cdb08e404129677bfc/f1e91bd4efeae48b0f42caed7e8ce2e3a0d05b02/120adae7b42faa641179270c067864544a50ab69 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 (301081), EUVD (EUVD-2026-9408) and CERT Bund (WID-SEC-2026-0614). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Affected

  • Google Container-Optimized OS
  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • SUSE openSUSE
  • RESF Rocky Linux
  • Microsoft Azure Linux
  • Open Source Linux Kernel
  • IBM QRadar SIEM

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.1
VulDB Meta Temp Score: 6.0

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

NVD Base Score: 5.5
NVD Vector: 🔒

CNA Base Score: 7.3
CNA Vector (Linux): 🔒

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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: 🔒

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 301081
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-23236

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 5.10.251/5.15.201/6.1.164/6.6.127/6.12.74/6.18.13/6.19.3/7.0-rc1
Patch: 061cfeb560aa3ddc174153dbe5be9d0b55eb7248/6167af934f956d3ae1e06d61f45cd0d1004bbe1a/a0321e6e58facb39fe191caa0e52ed9aab6a48fe/0634e8d650993602fc5b389ff7ac525f6542e141/52917e265aa5f848212f60fc50fc504d8ef12866/1c008ad0f0d1c1523902b9cdb08e404129677bfc/f1e91bd4efeae48b0f42caed7e8ce2e3a0d05b02/120adae7b42faa641179270c067864544a50ab69

Timelineinfo

01/13/2026 CVE reserved
03/04/2026 +50 days Advisory disclosed
03/04/2026 +0 days VulDB entry created
06/24/2026 +112 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-23236 (🔒)
GCVE (CVE): GCVE-0-2026-23236
GCVE (VulDB): GCVE-100-348729
EUVD: 🔒
CERT Bund: WID-SEC-2026-0614 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 03/04/2026 16:06
Updated: 06/24/2026 07:50
Changes: 03/04/2026 16:06 (57), 03/04/2026 18:02 (1), 03/05/2026 14:09 (7), 03/07/2026 22:18 (2), 03/18/2026 06:43 (11), 04/20/2026 11:35 (1), 04/29/2026 22:59 (1), 06/03/2026 07:40 (11), 06/24/2026 07:50 (1)
Complete: 🔍
Cache ID: 216::103

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

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you need the next level of professionalism?

Upgrade your account now!