Hacker Russ Cox to release an iOS 11.2-11.2.2 kernel exploit

Hacker Russ Cox is all set to make a new iOS 11.2 exploit public. Here’s how this will benefit the jailbreak community.

iOS 11.2-11.2.2 kernel exploit is coming soon

Security researcher Russ Cox will soon make public a new kernel exploit for iOS 11.2 firmware. For those who don’t know, Cox is a respected figure in the hacking community and works for Google.

This vulnerability allows you to run arbitrary code from inside an application with full kernel permissions. Apple patched this exploit or vulnerability in iOS 11.2.5.

Here’s a screenshot of the Apple’s security notes for this version that confirms this.

iOS 11.2 kernel exploit

This exploit will work on the following iOS versions –

  • 11.2
  • 11.2.1
  • 11.2.2

According to a tweet from his official Twitter handle, Russ does intend to release it soon.

He didn’t yet mention anything about compatibility but everything will become clear once the exploit is out.

He also remarked that this bug was “no that interesting”, which indicates that it may not be as powerful as think it is. It could also be an attempt by him to keep the trolls and kids at bay.

What should you do now?

1. Downgrade to iOS 11.2.x

Downgrading to iOS 11.2-11.2.2 is essential right now.

This will ensure that Cox’s exploit will support your device and increase your chances of getting a jailbreak.

iOS 11.2 firmware

Apple patched the kernel vulnerability in iOS 11.2.5. Therefore, any version below that

2. Save SHSH Blobs

If you are on iOS 11.1.2 or below, I suggest saving SHSH Blobs for your device as soon as possible. You can use Telegram jailbreak bot to save blobs for your device.

Remember, you must hurry up because Apple can stop signing these versions anytime now.


Having SHSH Blobs will ensure you can upgrade to a new jailbreak tool if it gets released.

3. Don’t upgrade to iOS 11.2 or above

Some users were also asking if it’s safe to update to iOS 11.2 or above. The answer to that is, of course, no.

An exploit doesn’t guarantee that a jailbreak will drop sometime in the future.

Electra jailbreak toolkit

Existing jailbreak tools like Electra and LiberiOS are already pretty stable. Relinquishing iOS 11.1.2 or an older version will have you waiting for a jailbreak for months.

For more jailbreak news and updates, follow us on Twitter and Facebook.


  1. Jeff February 6, 2018
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  2. Nguyen Hung January 31, 2018
    • iOS Expert January 31, 2018
  3. cha0s January 27, 2018
  4. Hasan Şahin January 24, 2018
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        • iOS Expert January 24, 2018
          • hasan January 25, 2018
          • iOS Expert January 25, 2018

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