Linux Kernel up to 6.18.6/6.19-rc5 vmwgfx null pointer dereference

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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability has been found in Linux Kernel up to 6.18.6/6.19-rc5 and classified as critical. This impacts an unknown function of the component vmwgfx. This manipulation causes null pointer dereference. This vulnerability is registered as CVE-2026-23008. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.18.6/6.19-rc5. It has been declared as critical. Affected by this vulnerability is an unknown part of the component vmwgfx. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. As an impact it is known to affect availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: drm/vmwgfx: Fix KMS with 3D on HW version 10 HW version 10 does not have GB Surfaces so there is no backing buffer for surface backed FBs. This would result in a nullptr dereference and crash the driver causing a black screen.

It is possible to read the advisory at git.kernel.org. This vulnerability is known as CVE-2026-23008 since 01/13/2026. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 296534 (Linux Distros Unpatched Vulnerability : CVE-2026-23008), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.18.7 or 6.19-rc6 eliminates this vulnerability. Applying the patch a91bdd21d5efb3072beefbec13762b7722200c49/d9186faeae6efb7d0841a5e8eb213ff4c7966614 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 (296534), EUVD (EUVD-2026-4625) and CERT Bund (WID-SEC-2026-0215). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • SUSE openSUSE
  • RESF Rocky Linux
  • Open Source Linux Kernel

Productinfo

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Version

License

Website

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

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

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / 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: 296534
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-23008

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.18.7/6.19-rc6
Patch: a91bdd21d5efb3072beefbec13762b7722200c49/d9186faeae6efb7d0841a5e8eb213ff4c7966614

Timelineinfo

01/13/2026 CVE reserved
01/25/2026 +12 days Advisory disclosed
01/25/2026 +0 days VulDB entry created
03/27/2026 +61 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-23008 (🔒)
GCVE (CVE): GCVE-0-2026-23008
GCVE (VulDB): GCVE-100-342835
EUVD: 🔒
CERT Bund: WID-SEC-2026-0215 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 01/25/2026 16:06
Updated: 03/27/2026 22:22
Changes: 01/25/2026 16:06 (58), 01/26/2026 02:07 (1), 01/26/2026 12:12 (2), 03/25/2026 23:30 (11), 03/27/2026 22:22 (7)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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