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Mitigaciones — Automated detection and mitigation of CVE-2026-31431 local privilege escalation on Linux via Bash scripts and Ansible playbooks, with CIS-standard hardening for enterprise fleets. | Kitploit
Tools/GitHubGitHub/net0bsd/mitigaciones
Vulnerability AnalysisConfiguration AuditingDevSecOps
GitHubnet0bsd/mitigaciones

Mitigaciones

Automated detection and mitigation of CVE-2026-31431 local privilege escalation on Linux via Bash scripts and Ansible playbooks, with CIS-standard hardening for enterprise fleets.

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3 months agoNot yet reviewed

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CVE-2026-31431 ("Copy Fail") Mitigations

Collection of automation scripts and playbooks for the detection and mitigation of vulnerability CVE-2026-31431 (local privilege escalation via page cache corruption in setuid binaries) on Linux systems.

Repository Contents

  • cve-2026-31431-mitigator.sh: Interactive pure Bash script to audit and apply hot mitigations (blocking the algif_aead and authencesn modules via modprobe). Designed with automatic detection for the Red Hat, SUSE, and Debian families.
  • mitigar_cve.yml: Ansible playbook for the automated deployment of the strict mitigation (CIS standard) across server fleets. Ideal for mission-critical infrastructures (RHEL, CentOS, Oracle Linux, Fedora, AlmaLinux, Rocky Linux).

Usage

Bash Script (Local Audit/Mitigation)

Run with superuser privileges:

root@kitploit:~
chmod +x cve-2026-31431-mitigator.sh
sudo ./cve-2026-31431-mitigator.sh

* **`rsyslog-sre-golden-signals.sh`**: Script to configure Rsyslog, mapping system events to the four SRE "Golden Signals" (Traffic, Errors, Latency, Saturation) and setting up forwarding to a central server.
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