CVE-2026-24813
NULL Pointer Dereference in SKRoot-linuxKernelRoot cJSON.Cpp
Publication date: 2026-01-27
Last updated on: 2026-01-27
Assigner: Government Technology Agency of Singapore Cyber Security Group (GovTech CSG)
Description
Description
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| abcz316 | skroot-linuxkernelroot | * |
| unknown_vendor | cjson | * |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-476 | The product dereferences a pointer that it expects to be valid but is NULL. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is a NULL Pointer Dereference issue in the SKRoot-linuxKernelRoot project, specifically in cloned functions derived from the cJSON library. The problem arose because these cloned functions did not have the security patches that were applied to the original cJSON code, which included NULL pointer checks. Without these checks, the program could attempt to access memory through a NULL pointer, leading to crashes or undefined behavior. The vulnerability was fixed by adding proper NULL pointer checks to these functions. [1]
How can this vulnerability impact me? :
This vulnerability can cause the affected software to crash or behave unpredictably due to NULL pointer dereferences. Such crashes can lead to denial of service or potentially be exploited to cause further security issues depending on the context of use. Since the vulnerability exists in a core utility module, it could impact the stability and reliability of systems using SKRoot-linuxKernelRoot. [1]
What immediate steps should I take to mitigate this vulnerability?
Apply the security patch that adds NULL pointer checks to the cloned functions derived from the cJSON library in the SKRoot-linuxKernelRoot project. This patch fixes the vulnerability by preventing NULL pointer dereferences. The patch is available in the GitHub pull request #116 for SKRoot-linuxKernelRoot and corresponds to the same fix applied in the original cJSON repository (commit 60ff122 by DaveGamble). [1]