Ubuntu 26.04 Security Shift
Ubuntu 26.04 LTS brings TPM-backed disk encryption, confidential computing, safer defaults, and more. Here is what matters most.
Heads up: CVE-2026-31431 (Copy Fail) is a kernel crypto vulnerability affecting Rocky Linux. Our community is on it: tracking patches and sharing Rocky-specific guidance as it develops.
If you're running Rocky in production, check the forum thread for the latest:
https://forums.rockylinux.org/t/cve-2026-31431-copy-fail-linux-kernel-crypto-vulnerability/20375/8
#RockyLinux #LinuxSecurity #OpenSource
I added the following line to /etc/default/grub: GRUB_CMDLINE_LINUX=“initcall_blacklist=algif_aead_init” then did a sudo grub2-mkconfig -o /boot/grub2/grub.cfg upon reboot the exploit no longer works. The failure message is: AttributeError: module ‘os’ has no attribute ‘splice’. You would probably want to revert this change once a patched kernel is released.
AlmaLinux released critical kernel patches to fix Copy Fail (CVE-2026-31431), a high-severity vulnerability. Update your AlmaLinux systems today.
Full details here: https://ostechnix.com/almalinux-copy-fail-cve-2026-31431-fix/
#Copyfail #CVE202631431 #Almalinux #Linuxkernel #Patch #Linuxsecurity
Para quem usa Linux Mint numa versão suportada, um patch do "kmod" que mitiga o "Copy.Fail" está disponível nas actualizações de sistema:
https://forums.linuxmint.com/viewtopic.php?p=2780569#p2780569
De todo o modo, confirmem que versão do kmod têm instalada, com o comando "apt list --installed kmod" (sem as aspas) no terminal e se o resultado for "31+20240202-2ubuntu7.2" já têm a actualização de mitigação.
Se ainda assim tiverem dúvidas, podem verificar as alterações que a versão instalada do kmod fez ao vosso sistema, correndo, no terminal, o comando "apt changelog kmod", se virem "Disable loading of algif_aead module to mitigate CVE-2026-31431 (LP: #2150743) - debian/modprobe.d/disable-algif_aead.conf" então a mitigação está instalada.
Considerando o estado actual dos servidores do Ubuntu, é possível que haja alguns avisos/erros quando correrem o Gestor de actualizações do Linux Mint. Se isso acontecer, tentem actualizar um pouco mais tarde (já vi vários computadores avisarem que ocorreu um erro e, ainda assim, logo de seguida, mostrarem as actualizações disponíveis, incluindo do kmod versão 31+20240202-2ubuntu7.2).
O Linux é vosso amigo.
#LinuxMint #CopyFail #linuxsecurity
🔴 Your Linux Server Just Got Owned
A regular employee just became a root administrator. Nobody gave them permission.
https://www.youtube.com/shorts/jeFQgKHgZNo
#cybersecurity #linuxsecurity #privilegeescalation #patchnow #infosec #hacking #cve #vulnerability #threatintel #security
Linux Privilege Escalation Cheat Sheet: Techniques and Prevention.
In this cheat sheet, I break down essential enumeration commands, common escalation paths, and practical techniques every security professional should know.
https://denizhalil.com/2025/06/30/linux-privilege-escalation-cheat-sheet/
#CyberSecurity #LinuxSecurity #PrivilegeEscalation #Pentesting #RedTeam #BlueTeam #InfoSec #ethicalhacking #SecurityEngineering #itsecurity
SudoAptChat
Michael J Burgess
Rocky Linux 
fosstopia 🇩🇪
OSTechNix
Alonso Caballero / ReYDeS
João Tiago Rebelo (NAFO J-121)
Cybersecurity Threat Surface
halil deniz
Dave Diamond