Linux Kernel up to 6.6.17/6.7.5/6.8-rc4 kobject null pointer dereference

Summaryinfo

A vulnerability categorized as problematic has been discovered in Linux Kernel up to 6.6.17/6.7.5/6.8-rc4. This affects an unknown part of the component kobject. Such manipulation leads to null pointer dereference. This vulnerability is documented as CVE-2024-26604. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.6.17/6.7.5/6.8-rc4 (Operating System) and classified as problematic. Affected by this issue is an unknown functionality of the component kobject. The manipulation with an unknown input leads to a null pointer dereference vulnerability. Using CWE to declare the problem leads to 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. Impacted is availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: Revert "kobject: Remove redundant checks for whether ktype is NULL" This reverts commit 1b28cb81dab7c1eedc6034206f4e8d644046ad31. It is reported to cause problems, so revert it for now until the root cause can be found.

The weakness was released 02/25/2024. The advisory is shared for download at git.kernel.org. This vulnerability is handled as CVE-2024-26604 since 02/19/2024. There are neither technical details nor an exploit publicly available.

Upgrading to version 6.6.18, 6.7.6 or 6.8-rc5 eliminates this vulnerability. Applying the patch 7f414d306320/b746d52ce7bc/3ca8fbabcceb 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.

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Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 6.6.0
• 6.6.1
• 6.6.2
• 6.6.3
• 6.6.4
• 6.6.5
• 6.6.6
• 6.6.7
• 6.6.8
• 6.6.9
• 6.6.10
• 6.6.11
• 6.6.12
• 6.6.13
• 6.6.14
• 6.6.15
• 6.6.16
• 6.6.17
• 6.7.0
• 6.7.1
• 6.7.2
• 6.7.3
• 6.7.4
• 6.7.5
• 6.8-rc1
• 6.8-rc2
• 6.8-rc3
• 6.8-rc4

License

• open-source

Website

• Vendor: https://www.kernel.org/

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