Release: Fully operational dlclose exploit + Linux for PS4, by kR105
The name kR105 might ring a Bell to you because this developer has been credited a lot recently by CTurt on his PS4 hack work. Today, kR105 popped up on our forums to release something that lots of us had been chasing for a while: a fully operational dlclose exploit. He also emailed me to mention he has now integrated support for booting Linux straight from the PS4-Playground tools, and, icing on the cake, also provided the actual PS4 Linux files to use with the tools.
In other words, kR105 is closing the gap here, releasing everything you need to run Linux on your PS4. This is not a drill or a proof of concept video, people. The files are up for anyone to grab. I haven’t tested them myself though, because I’ve still been hesitating on getting a 1.76 PS4, but I’m regretting not having one every day that goes by. If you’re the lucky owner of a PS4 1.76 though (we have an article here on where you might be able to get one), now’s the right time to test this! Furthermore, there’s absolutely no reason to doubt this release is real, given that it initiates strait from kR105, in CTurt’s github. Also CTurt confirmed this release to me earlier today.
So, what was just released by kR105?
A fully functional dlclose exploit. The exploit had been released about a week ago, and several people had been able to take it further, but there were still issues on how the publicly available code was working, crashing as soon as the exploit was attempting to return to userland. kR105’s release fixes all of that, it includes root, sandbox escape and jailbreak. This exploit is what you’ll want to run your native code on a 1.76 PS4
An update to PS4-Playground to run Linux. Another missing link here, that will let people launch linux without having to write their own loader. The launcher integrates the dlclose exploit if I understand correctly. From the Readme:
You need a FAT32 formatted USB drive plugged in on any PS4’s USB port with the following files on the root directory:
bzImage: Kernel image that will be loaded. Recommended to use this sources to compile it.
initramfs.cpio.gz: The initial file system that gets loaded into memory during the Linux startup process. This one is recommended.The file names must match with the above and you can have more files on the same USB drive. From there you can setup the environment to run from an NFS share or from an external drive via USB (recommended) and boot a complete distro!

A Compiled distro of Linux for the PS4. kR105 has the files bzImage and initramfs.cpio.gz ready for anyone to grab, so you don’t have to compile your own version. In his words: “those files should get you into linux with a nice bash console on your tv”.
Downloads
- You can download the new dlclose exploit from kR105’s github here.
- You can download the latest version of PS4-Playground from CTurt’s github here.
- You can download kR105’s compiled Linux files here.
Update: As pointed out by CTurt, you can simply download the compiled Linux files, put them on a FAT32 USB stick that you’ll connect to your 1.76 PS4, and test directly by going to the PS4 Playground live Demo here.
Wow, now that’s a good start for the weekend!

ok wow this is huge. I hope it opens the door to better understand the PS4. and hopefully we’ll see some more tools like firmware downgrade :))
Can I expect any exploits for ps 4 with 2.51? Plz reply soon!
Maybe
Maybe soon:
– dlclose exploit should work untill FW 2.57
– webkit exploit works untill FW 1.76, but Cturt told on IRC yesterday (#ps4dev) that there are other webkit vulnerabilities on the latests FW
Thx for replying bro! U made my hope live!
No wrong hope for you. I think they said that the webkit exploit they use is in an older version that is used in apps maybe YouTube or Netflix and so on BUT they are not be able to use the JIT calls for code execution. I think they have to bypass this first and then you can be happy about news on 2.57 and below XD
Happy aprils fools day
April’s fool was yesterday. This release is the real deal
LOL
I hope that good things can happen also for FW 2.57 as Fimo told. Few people are on 1.76.
This is great but where will it lead us? A full CFW for the latest version so we can all install it?
If this scene is the same as the PS3 scene then we wont see anything till there is a fight and someone leaks something.
Looks like the Wii/WiiU scene is the winner again. The WiiU could run Wii backups in the first week of release. The Xboned could run a sortof backup of games already and PS4 cant run anything but this linux.
Even the Vita hasn’t seen a CFW or a backup loader. I guess that scene is also full of little ***.
If you just want to run Linux then buy a $100 PC. Even a 2nd hand one from a garage sale for $10 will run Linux. OR just get a launch day PS3 with OtherOS.
But Linux on PS4 means full kernal access and not just a vWii hack thats just kinda ported in most points. Nintendos secaurity is also a lot weaker than it is on Playstation caurse they often use older tools and have some huge mistakes at some given privileges. And WHY THE *** do you just care about playing backups?! Whats about some cool things like real time ram hacking, redNand and best of all the Emulators with full access to the grafics unit.
a launch day ps3 costs just as much if not more than a ps4 with fw 1.76 if in good condition. and linux on ps3 is terrible.
What are you talking about? The launch day PS3 is terrible, it overheats quite easily. There are several of them (60 GB backwards compatible) on kijiji going for cheap. Unless you’re talking about a launch day PS3 still brand new in the box.
WHY WHY WHY !!! where is the work on ps vita, PS4 took all the attention of the developers, I hope some day there is some exploit like this for vita.
Linux on Vita would be fun XD
It’s because the Vita has better security than the PS4 and the developers have probably hit a stone wall, being unable to proceed as of currently. That or they’re just holding things back because they don’t wanna hurt the Vita further by unleashing piracy on it (that could theoretically scare away the last devs that are still making games for it). The PS4 on the other hand is so successful, it just doesn’t have the same kind of risks. Besides, more owners of a console == more potential hackers.
Devs ? What devs ? sony dumped the whole vita thing so bad with not publishing games for it , now the only remaining devs that work on vita are just doing some side stuff , not paying attention to the whole device potential , at least in europe and NA
Yeah, I haven’t been following it very closely lately but I saw on my news feed that there are still some upcoming games (Axiom Verge, for instance) so I figured that it’s not completely dead yet.
Is there a way to install ubuntu using this files?
Not for an end user. You wouldn’t be able to use the standard image from ubuntu.com even though the PS4 is technically very similar to an ordinary PC. The distribution needs to be adapted in a lot of ways to work with the PS4. Surely such a version will come out in the future, though. It’s only a question of time.
Is there a way to install ubuntu using the exploit?
Does the linux distro have access to all the horsepower of the PS4? or is limited in some aspects? (graphics, CPU, RAM, etc…) What about Steam?
Full kernel access so all horses are saddled up if you want to
Thank you, anyone knows anything about steam?
does these run pirated games?
Don’t even think of it -_-
but why?
Because you’re an @55 pirate, why else?
We would need a way to install pkg files like the PS3. Then a backup loader would need to be created to even load a game. We won’t see that until a full CFW is created.
You guys need to have patience. The exploit dlclose give the capacity of open many doors unopened yet. The linux, is only the beginning. At any moment, the CFW will appear… it’s matter of time.
Fantastic work! wish i could land a 1.76 🙁
Here it is in action: https://www.youtube.com/watch?v=pfngQvZqZrk
Unfortunately he does not start X or anything like Team f0 did on their presentation.
What about vita guys?
Vita should get something like this ( forget about rejuvenate hack)
My dream on vita to get like dolphin emu support on it or ps2 emu loader like on PS3. I mean if we have like ps2 emu on vita we will playing with it for hours because there is a tons of ps2 games and deserves to playing them on go. I’m sure vita is more capable of running ps2 games as well as camecube through emulators.
Sony should support ps2 Classic games because the have more abilities for suitable codes to build it on vita.
Imagine to play resident evil 4 on vita. Amazing isn’t it?
This is my dream about vita. What about yours?
This will be ok for users to enjoy homebrew on linux but the truth is buy a cfw ps3 from eBay spend the 275.00 usa bucks instead of the 550.00 usa bucks for a 1.75 vanilla ps4.
Where is the PS Vita news? Anyway, I think it’s time to continue and finish the NULLDC builds for the PSP because we all know Dreamcast on PSP is possible.
seriously where is vita news i just cant belive that now one cant hack vita
we access to all file of fw and we can change all of them
what is problem any way
No luck running it on 1.72 so I decided to update to 1.76 as required, but I’m still receiving a “there is not enough free system memory”. Anyone?
btw, I’ve got 1.76 PUP from here (it’s not on psdevwiki anymore): https://drive.google.com/file/d/0B98ycjmAUSuDMUlGckRJVW5zOGc/view?pref=2&pli=1
MD5 = A5234C6E8D37A57B374E24171173FBDD
The .bin file you are injecting is too big. Compile it yourself or find a good one, the size has to be a few Ko.
tnx mate, I’ll give it a shot.
Are you sure that you have the latest code? I found this: https://github.com/CTurt/PS4-playground/commit/4e41d62932f0bf6c15cf0b11ed5a9bde715f9611
So this is known bug and seems to be fixed.
Same error here, got it working only once
My life is pretty terrible, I got nothing and nobody, only this pretty expensive *** computer and this paperweight PS4, one of the few things making my life tolerable is download a bunch of games for free, escaping from reality, pretending everything is alright, like when I was a kid 🙂 unfortunately I can’t do this anymore on PC because of Denuvo, so I hope someday I’ll be able to this again on my PS4; Jesus one of the last sweet moments of my life was when they hacked PS3 😀 good times ! You can’t understand what I’m talking about unless you are a sad, life-less creep like me.
It works fine you can even run some emulators without issues! Rather have a ps3 with linux installed easier to access.
When i have an idea brewing anything is possible. You just need to know how to see it so go back to the website redownload the file and try it again.
i need to update my ps4 from 1.75 to 1.76 i supsoe but i foudn 2 diferent updates. the 185mb one 01.760.000 but also found one close to 800mb says recovery as per this link (the last 2-3 replies) https://gbatemp.net/threads/public-dlclose-exploit-1-76-only.420045/page-2
can someone verify which one is needed.
is http://www.releaseps4jailbreak.com legit? they claim to have the jailbreak for 3.15cfw and 3.50cfw ….??? also some 38 comments with some bloggers id link are there…. please someone take a look there and let me know in the comments .. thanks