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Kernel Spoof

About 428 wordsAbout 1 min

2026-04-25

Kernel Spoof can modify the kernel version and build time strings returned by uname(), making the kernel appear as an unpatched original kernel. Default Off.

Path: Settings page top-right function button → Kernel Spoof Config

How It Works

Kernel Spoof uses the KernelPatch SuperCall mechanism to intercept uname() system calls at the kernel level, directly replacing the release (kernel version, e.g., 5.15.123) and version (build time string) fields. The spoofing process is entirely in kernel space and cannot be bypassed from user space.

Configuration

Kernel VersionRequiredstring

The spoofed kernel version string, e.g., 5.15.123, 6.1.75. Leave empty to keep original.

Kernel Build TimeOptionalstring

The spoofed kernel build time string. Leave empty to keep original.

Setup Steps

  1. Enter the kernel version and/or build time you want to spoof
  2. Click Save to write the configuration
  3. Toggle Kernel Spoof on

Changes take effect immediately. The apd daemon automatically applies the spoof at boot.

Boot Safety Protection

Kernel Spoof includes a Boot Safety mechanism using a two-phase commit pattern to prevent boot loops caused by incorrect spoof configurations:

  1. Before applying spoof, apd creates a flag file /data/adb/.uts_spoof_boot_pending
  2. After Android finishes booting, the flag is automatically cleared
  3. If the flag still exists on the next boot (indicating a previous boot failure), spoof application is skipped

Risk Warning

Do NOT change the kernel version to one with a significantly different major version number from your actual kernel (e.g., spoofing 5.15.x when the real version is 6.1.x). This may cause system components or drivers to malfunction, potentially resulting in an inability to boot. It is recommended to only modify sub-versions within the same major version (e.g., 5.15.123 → 5.15.137).

Restore Original Values

Click Restore to immediately revert the kernel's original uname() values and clear all spoof configuration.

/data/adb

.uts_spoof_enable# Enable flag file

.uts_spoof_config# JSON spoof configuration (release, version)

.uts_spoof_boot_pending# Boot safety flag (temporary)

Copyright Ownership:FolkPatch Team

License under:Attribution 4.0 International (CC-BY-4.0)