Joined October 2023
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Photos and videos
Royall Researchers retweeted
❗️ Linux is having a brutal week. Another local to root privilege escalation vulnerability just dropped: "Copy Fail 2: Electric Boogaloo."
This is the third Linux LPE in a row, after Copy Fail and Dirty Frag. The PoC is public on GitHub. There is still no coordinated patch.
openwall.com/lists/oss-secur…
🚨 BREAKING: New Linux zero-day "Dirty Frag" lets ANY local user become root on most major distros.
The PoC is already public, half of it isn't patched yet.
Discovered by researcher Hyunwoo Kim, the exploit chains two kernel bugs and sits in the same family as Dirty Pipe and Copy Fail.
▪️ CVE-2026-43284 (xfrm-ESP Page-Cache Write): patched in mainline Linux.
▪️ CVE-2026-43500 (RxRPC Page-Cache Write): NO PATCH yet.
The exploit is reliable by design. Attackers don't have to win a timing race, the system won't crash and alert anyone if it fails, and it succeeds nearly every run.
The embargo got broken before distros could ship fixes, so the working code is now sitting on GitHub.
Confirmed working on: Ubuntu 24.04.4, RHEL 10.1, openSUSE Tumbleweed, CentOS Stream 10, AlmaLinux 10, Fedora 44.
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💥 Introducing "Dirty Frag"
A universal Linux LPE chaining two vulns in xfrm-ESP and RxRPC. A successor class to Dirty Pipe & Copy Fail.
No race, no panic on failure, fully deterministic. ~9 years latent.
Ubuntu / RHEL / Fedora / openSUSE / CentOS / AlmaLinux, and more.
Even if you've applied the "Copy Fail" mitigation, your Linux is still vulnerable to "Dirty Frag". Apply the Dirty Frag mitigation.
Details:
dirtyfrag.io
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Royall Researchers retweeted
May 9
How many unfinished projects do you have?
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Royall Researchers retweeted
20 Oct 2025
I think the @Medium site is down. Some people reported that they have been facing this for 3 days.
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26 Jan 2025
tryhackme.com/r/room/smol?ut… Just completed the ‘Smol’ CTF challenge on TryHackMe! 🖥️💻 Explored vulnerabilities, discovered hidden gems 🔍, and had a blast while learning new techniques 💡. #CyberSecurity #CTF #TryHackMe #HackingSkills #LearningByDoing 💪🔥#royall #researchers
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21 Jan 2025
tryhackme.com/r/royallresear… I Have Just Earned a Badge in [TryHackMe] Windows PrivEsc Arena
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3 Dec 2024
tryhackme.com/r/room/thestic… Cracked the machine and found the flag.txt! 🏁🔍 Another one in the bag! 😎💥 #THM #StickerShop #CTF #FlagCaptured #CyberSecurity #HackingWin 🚀💻 #Royall #Researchers
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3 Dec 2024
tryhackme.com/r/room/lookup?… Just completed the Lookup Machine on TryHackMe! 🖥️🔍 Had a blast exploring and mastering this challenge 💥💡 #CyberSecurity #TryHackMe #CTF #Learning #HackTheBox #Royall #researchers
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3 Aug 2024
tryhackme.com/r/room/bluepri… 🛠️ Just completed the ultimate machine 'Blueprint' challenge on Try Hack Me! 🔍💻 Delved into the depths of cybersecurity with mind-bending puzzles and intricate networks.#BlueprintChallenge #royall #royal #hack #thm #ctf #HTB #researchers #blueprint #etc
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23 Jul 2024
tryhackme.com/r/room/cyberki… 🔒 Just completed the "Cyber Kill Chain Room" on Try Hack Me! 💻🛡️ It was an exhilarating journey through the stages of attack and defense. Learning about reconnaissance, exploitation, and more was eye-opening. #Royal #CyberSecurity #TryHackMe #InfoSec 🔐
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19 May 2024
tryhackme.com/r/room/beginne… i have just completed a room Learning CyberSecurity on tryhackme #Royall #Researchers #CyberSecurity #THM #Tamil #Hacking #CTF
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16 May 2024
I just pwned Redeemer in Hack The Box! hackthebox.com/achievement/m… #hackthebox #htb #cybersecurity #Royall #Researchers
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16 May 2024
I just pwned Dancing in Hack The Box! hackthebox.com/achievement/m… #hackthebox #htb #cybersecurity #Royall #Researchers
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16 May 2024
I just pwned Fawn in Hack The Box! hackthebox.com/achievement/m… #hackthebox #htb #cybersecurity #Royall #Researchers
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13 May 2024
tryhackme.com/r/room/cyberth… Intro to Cyber Threat Intel" room on TryHackMe! 💻💥 Dive into the world of cybersecurity with me as I learned about threat intelligence and explored practical exercises to defend against cyber threats. 🛡️💡 #TryHackMe #CyberSecurity #ThreatIntel 🔐🚀
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9 May 2024
tryhackme.com/r/room/agentsu… 🔒 Just conquered 'Agent Sudo' on TryHackMe! 🕵️♂️💻 Dive into the thrilling world of cybersecurity with this immersive room. Sharpen your hacking skills as you navigate through challenges and uncover vulnerabilities. #THM #Royall #Researchers
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29 Apr 2024
tryhackme.com/r/room/burpsui…🔒 Just conquered the Burp Suite: The Basics room on @tryhackme! 💻💥 Delved into the fundamentals of web application security with hands-on challenges. 🚀 Ready to take my cybersecurity skills to the next level! #TryHackMe #BurpSuite #Cybersecurity
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28 Apr 2024
tryhackme.com/r/room/axss
I've completed the XSS Room on TryHackMe! 🎉 Learned all about cross-site scripting (XSS) and how to identify, exploit, and defend against vulnerabilities. 💻💪 Ready to enhance web security and make the internet safer! #TryHackMe #XSS #cybersecurity
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18 Apr 2024
tryhackme.com/r/room/kenobi 🔒 Just conquered the Kenobi machine on TryHackMe! 🎉 This CTF-style challenge tested my skills in penetration testing and Linux privilege escalation. Huge shoutout to TryHackMe for the awesome platform and to the community for the support! 💪 #TryHack
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