A newly discovered Linux kernel vulnerability, CVE-2026-31431 (Copy Fail), allows local users to corrupt memory copies of readable files, including setuid binaries, enabling privilege escalation. This flaw resides in the AF_ALG subsystem and can be exploited using a simple Python script, posing significant risks to system integrity and security for all recent Linux kernels since version 4.14. Developers should monitor updates and consider disabling the affected module or blocking AF_ALG sockets as interim measures.
Read the full article at InfoSec Write-ups - Medium
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Ali NematiWritten by Ali
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