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Dirty Frag: Linux kernel hit by second major security flaw in two weeks

Therecord.Media • May 11, 2026

The issue was found in the same area of the Linux kernel that produced last month’s Copy Fail bug, and also allows anyone with a basic account on an affected computer to seize full administrative control.

The full story

This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

Critical Linux Vulnerability 'Copy Fail' Grants Root Access Across Major Distros A newly disclosed vulnerability in the Linux kernel, tracked as CVE-2026-31431 and named 'Copy Fail', allows unprivileged local users to gain root access on virtually all major Linux distributions released since 2017. The exploit, which is a 732-byte Python script, modifies the page cache of any readable file without altering the on-disk version, making it stealthy and difficult to detect. Discovered by Theori researcher Taeyang Lee using AI-assisted tools, the flaw stems from a logic error in the kernel's cryptographic subsystem, specifically within the algif_aead module. Patches were made available on April 1, 2026, following the initial disclosure on March 23, 2026, with public proof-of-concept released on April 30, 2026. The vulnerability poses a significant risk, especially in multi-tenant environments like cloud services and Kubernetes, where it can enable container escapes. Security teams are urged to apply patches immediately to mitigate risks associated with this critical flaw. 159 sources 73

Extracted Entities

Dirty Frag: Linux kernel hit by second major security flaw in two weeks

The full story

Extracted Entities

CWE Weaknesses (1)

Platforms (1)

Vulnerabilities (1)