May 12, 2026•1 min read•from InfoQ

Copy Fail and Dirty Frag: Linux Page-Cache Exploits Target Every Major Distribution

Two recent Linux kernel vulnerabilities have been disclosed: Copy Fail (CVE-2026-31431) on April 29, 2026, and Dirty Frag (CVE-2026-43284 and CVE-2026-43500) on May 7, 2026. Both allow local users to gain root access, affecting multiple Linux distributions. These vulnerabilities exploit flaws in the page cache via different subsystems, necessitating immediate patching by affected organizations.

By Matt Saunders

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#CVE-2026-43284

#CVE-2026-43500

#Linux distributions

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#subsystems

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#disclosed

#April 29, 2026