Summaryinfo

A vulnerability has been found in Linux Kernel up to 6.18.16/6.19.6/7.0-rc2 and classified as critical. The impacted element is an unknown function of the component HID. This manipulation causes null pointer dereference. This vulnerability is handled as CVE-2026-23349. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.18.16/6.19.6/7.0-rc2. It has been declared as critical. Affected by this vulnerability is an unknown part of the component HID. 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: HID: pidff: Fix condition effect bit clearing As reported by MPDarkGuy on discord, NULL pointer dereferences were happening because not all the conditional effects bits were cleared. Properly clear all conditional effect bits from ffbit

The advisory is shared at git.kernel.org. This vulnerability is known as CVE-2026-23349 since 01/13/2026. Neither technical details nor an exploit are publicly available.

Upgrading to version 6.18.17, 6.19.7 or 7.0-rc3 eliminates this vulnerability. Applying the patch d1edc027a4b0bb4c7a2670b530590b4df6177011/ef0e669dbceaf3d7bb4ae0b235fa61feabd92b0b/97d5c8f5c09a604c4873c8348f58de3cea69a7df 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.

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

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 6.18.0
• 6.18.1
• 6.18.2
• 6.18.3
• 6.18.4
• 6.18.5
• 6.18.6
• 6.18.7
• 6.18.8
• 6.18.9
• 6.18.10
• 6.18.11
• 6.18.12
• 6.18.13
• 6.18.14
• 6.18.15
• 6.18.16
• 6.19.0
• 6.19.1
• 6.19.2
• 6.19.3
• 6.19.4
• 6.19.5
• 6.19.6
• 7.0-rc1
• 7.0-rc2

License

• open-source

Website

• Vendor: https://www.kernel.org/

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