How Cloudflare responded to the “Copy Fail” Linux vulnerability

2026-05-13T07:24:06Z•1f6697d7ce223fdea555ee7bfc56c1f6364965cae0ff10325ce9fbd87010f143

Copy Failcloudflareincident responsekernellinuxmitigationprivilege escalationsecurity-operationsvulnerability disclosurezero-day

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What happened

Cloudflare responded to a public disclosure of the “Copy Fail” Linux kernel privilege escalation by detecting, investigating, and applying mitigations across its global fleet. Their security and engineering teams confirmed zero customer impact and found no evidence of malicious exploitation.

Why it matters

A reviewed impact interpretation has not been published for this record.

Evidence and limitations

Source ID: cloudflare_security_blog
Record identifier: 1f6697d7ce223fdea555ee7bfc56c1f6364965cae0ff10325ce9fbd87010f143
Enrichment time: 2026-05-13T07:24:06Z
AI-assisted enrichment: Yes

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