CVE-2026-24813
📋 TL;DR
A NULL pointer dereference vulnerability exists in the cJSON.Cpp module of SKRoot-linuxKernelRoot, which could cause denial of service or potential code execution if exploited. This affects systems using the abcz316 SKRoot-linuxKernelRoot software, particularly those utilizing the testRoot/jni/utils modules.
💻 Affected Systems
- abcz316 SKRoot-linuxKernelRoot
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Kernel crash leading to system instability, denial of service, or potential arbitrary code execution with kernel privileges.
Likely Case
Application crash or denial of service affecting the specific SKRoot-linuxKernelRoot functionality.
If Mitigated
Limited impact if proper input validation and error handling are implemented in calling code.
🎯 Exploit Status
Exploitation requires local access and specific conditions to trigger the NULL pointer dereference.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version including pull request #116 fix
Vendor Advisory: https://github.com/abcz316/SKRoot-linuxKernelRoot/pull/116
Restart Required: Yes
Instructions:
1. Update to the latest version of SKRoot-linuxKernelRoot that includes the fix from pull request #116. 2. Recompile and reinstall the kernel module. 3. Reboot the system to load the patched module.
🔧 Temporary Workarounds
Disable vulnerable module
linuxTemporarily disable or unload the affected SKRoot-linuxKernelRoot module
rmmod SKRoot_module_name
modprobe -r SKRoot_module_name
Restrict module loading
linuxPrevent loading of the vulnerable kernel module
echo 'blacklist SKRoot_module_name' >> /etc/modprobe.d/blacklist.conf
🧯 If You Can't Patch
- Implement strict access controls to limit who can execute SKRoot-linuxKernelRoot functionality
- Monitor system logs for crashes or unusual behavior related to the kernel module
🔍 How to Verify
Check if Vulnerable:
Check if SKRoot-linuxKernelRoot is installed and if the version predates the pull request #116 fixCheck Version:
Check module version or review source code for the NULL pointer fixVerify Fix Applied:
Verify the installed version includes the fix from GitHub pull request #116📡 Detection & Monitoring
Log Indicators:
- Kernel panic logs
- System crashes
- NULL pointer dereference errors in dmesg
Network Indicators:
- No network indicators - this is a local vulnerability
SIEM Query:
search for 'kernel: BUG: unable to handle kernel NULL pointer dereference' or similar crash messages