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#InSEKurity #CVE #Linux #Privilege Escalation #AF_ALG

CVE Research

May 5, 2026

sekurity-team

InSEKurity of the Week (CW18/2026): Linux Kernel "Copy Fail" Privilege Escalation (CVE-2026-31431)

A nine-year-old logic bug in the Linux kernel's algif_aead crypto module lets any local user write 4 bytes into the page cache of any readable file -- root, container escape, no race condition, public PoC

#InSEKurity #CVE #Linux +7

Exploit

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