Kernel on 0xMatheuZhttps://matheuzsecurity.github.io/tags/kernel/Recent content in Kernel on 0xMatheuZHugo -- gohugo.ioenSun, 06 Sep 2026 00:00:00 -0400Fileless ELF Execution via O_TMPFILEhttps://matheuzsecurity.github.io/hacking/fileless-loader-bypassing-elastic-memfd/Sun, 06 Sep 2026 00:00:00 -0400https://matheuzsecurity.github.io/hacking/fileless-loader-bypassing-elastic-memfd/O_TMPFILE creates anonymous inodes on real filesystems with no directory entry. Combine it with execveat(AT_EMPTY_PATH) and you get fileless ELF execution that looks nothing like memfd_create in telemetry.