TENABLE BLOG
Copy Fail (CVE-2026-31431): Frequently asked questions about Linux kernel privilege escalation vulnerability
KEV CRITICAL Canonical CVE-2026-31431 Linux kernel privilege escalation Copy Fail
Strategische Zusammenfassung
Tenable-Analyse zu Linux Kernel Privilege Escalation (Copy Fail / CVE-2026-31431) mit Bezug zu älteren verwandten CVEs (CVE-2016-5195, CVE-2022-0847); direkt relevant für Ubuntu 24.04 LTS-Deployments im Unternehmen.
Relevanz für dich
This is a new Linux kernel privilege escalation vulnerability (Copy Fail) that affects Ubuntu and Debian systems in the company's tech stack.
Volltext
Copy Fail (CVE-2026-31431): Linux Kernel Privilege Escalation FAQ | Tenable®
- Tenable Cloud Security (CNAPP) Page.
Thank you for your interest in Tenable Patch Management. A representative will be in touch soon.
%3A%20Linux%20Kernel%20Privilege%20Escalation%20FAQ%20%7C%20Tenable%C2%AE&p=https%3A%2F%2Fwww.tenable.com%2Fblog%2Fcopy-fail-cve-2026-31431-frequently-asked-questions-about-linux-kernel-privilege-escalation&r=<=811&evt=pageLoad&sv=2&cdb=AQAS&rn=32239)
Erwähnte CVEs
Risk Score
100
- cvss base
- 78.00
- kev bonus
- 20.00
- epss bonus
- 10.00
- poc bonus
- 0.00
- raw before weight
- 108.00
- industry weight
- 1.30
- freshness factor
- 1.00
- days old
- 0.00
Pfad: operational
MITRE ATT&CK Mapping
1 TTP Recon
Resource Dev
Initial Access
Execution
Persistence
Priv. Escal.
T1068 Exploitation for Privilege Escalation Def. Evasion
Cred. Access
Discovery
Lateral Mov.
Collection
C2
Exfiltration
Impact
Procedure-Details
| Technik | Tactic | Procedure | Conf. | Quelle |
|---|---|---|---|---|
| T1068 Exploitation for Privilege Escalation | Privilege Escalation | CVE-2026-31431 is a Linux kernel vulnerability exploited for local privilege escalation, similar in nature to prior Linux kernel privilege escalation vulnerabilities CVE-2016-5195 (Dirty COW) and CVE-2022-0847 (Dirty Pipe), allowing attackers to gain elevated privileges on affected systems. | high | llm |