kafel

WHAT IS IT? Kafel is a language and library for specifying syscall filtering policies. The policies are compiled into BPF code that can be used with seccomp-filter. This is NOT an official Google product. Usage With verbose error reporting struct sockfprog prog; kafelctxtt ctxt = kafelctxtcreate;...

seccomp-tools

Seccomp Tools Powerful tools for seccomp analysis. This project is aimed primarily but not exclusively at analyzing seccomp sandboxes in CTF pwn challenges. Some features are CTF-specific, but they're just as useful for analyzing real-world seccomp filters. Features Dump - Automatically dumps...

cve-2026-31431-mitigation

CVE-2026-31431 seccomp Mitigation A lightweight, reversible seccomp-based mitigation for CVE-2026-31431, a local privilege escalation vulnerability in the Linux kernel's algifaead / authencesn crypto subsystem. 中文文档 Vulnerability Overview Type: Local Privilege Escalation LPE Affected Component:...

firejail

Firejail Firejail is a lightweight security tool intended to protect a Linux system by setting up a restricted environment for running potentially untrusted applications. More specifically, it is an SUID sandbox program that reduces the risk of security breaches by using Linux namespaces,...

harden-docker-seccomp

harden-docker-seccomp Idempotent script to block AFALG socket creation for all Docker containers on a host as mitigation for CVE-2026-31431 "Copy Fail". Background CVE-2026-31431 is a local privilege escalation in the Linux kernel's authencesn cryptographic template, present in kernels built...

Hulios

Hulios Hardened Universal Linux Invisibility and Onion System Hulios is an eBPF-powered, transparent Tor VPN gateway for Linux. It secures outbound network traffic by redirecting TCP sockets and DNS queries through an embedded Arti Tor client instance and a localized Hickory-based DNS resolver. B...

Z-Jail

Z-Jail Multi-layer sandbox for native code execution on Linux. Seven ordered isolation layers — no external dependencies, 81 KiB PIE binary. ┌──────────────────────────────────────────────────────┐ │ Z-Jail │ ├──────────────────────────────────────────────────────┤ │ rlimits CPU, AS, NOFILE, NPRO...

cargo-fuzz

cargo fuzz Acargo subcommand for fuzzing with libFuzzer! Easy to use! Installation $ cargo install cargo-fuzz Note: libFuzzer needs LLVM sanitizer support, so this only works on x86-64 and Aarch64, and only on Unix-like operating systems not Windows. This also needs a nightly compiler since it us...

cve-2022-0185-crash-poc

Container running cve-2022-0185 crash POC This is a docker container that runs the crash POC from https://www.willsroot.io/2022/01/cve-2022-0185.html. The container runs unprivileged as UID 65534. You can also use docker run -u or set a security context with RunAsUser additionally, all should yie...

container-cve-2021-22555

Reproducer for CVE-2021-22555 as a container First, this rolls in the exploit code from here as a handy pre-built container: https://github.com/google/security-research/tree/master/pocs/linux/cve-2021-22555 Pre-built container: quay.io/cgwalters/cve-2021-22555 Mitigation: seccomp profiles A stron...

docker_escape_pwn

Escape from Docker using CVE-2017-1000112 and CVE-2017-18344. Including: gaining root privilage get all capbilities namespace recovery filesystem recovery cgroup limitation bypass seccomp bypass...

sandboxed-untrusted-code-execution-runner

🛡️ Sandboxed Untrusted Code Execution Runner Kernel-enforced execution of untrusted code — every payload jailed by cgroups v2, namespaces, seccomp-BPF and a read-only rootfs, and every run audited in PostgreSQL. python · javascript · bash → 5-second, 128 MB, 0.5-core, 32-PID, 512 KB-output jail...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: Entry: Fixed seccomp bypass after ptrace with TSYNC The Sashiko review identified the following issue: If a thread is stopped during syscalltraceenter for ptrace, another thread can install a seccomp filter using...

Astra Linux – Vulnerability in Linux 5.10, Linux

The Linux kernel before version 5.17.2 mishandles seccomp permissions. The PTRACESEIZE code path allows attackers to bypass the intended restrictions on setting the PTSUSPENDSECCOMP flag...

CVE-2026-90339

A flaw was found in the Linux kernel's powerpc/syscall component. This vulnerability occurs when the systemcallexception function incorrectly handles a sentinel value during syscall processing, particularly when security mechanisms like seccomp or ptrace intercept a syscall. This can lead to an...

DEBIAN-CVE-2026-95837

containerd is an open-source container runtime. From 2.1.0 until 2.2.7 and 2.3.4, containerd's CRI CreateContainer checkpoint restore is vulnerable because CRIU restores process security state from checkpoint data instead of enforcing the destination ContainerConfig. An attacker who can create a...

CVE-2026-95837

containerd is an open-source container runtime. From 2.1.0 until 2.2.7 and 2.3.4, containerd's CRI CreateContainer checkpoint restore is vulnerable because CRIU restores process security state from checkpoint data instead of enforcing the destination ContainerConfig. An attacker who can create a...

CVE-2026-95837

The containerd container runtime (versions 2.1.0 through 2.2.6 and 2.3.0 through 2.3.3 ) is vulnerable to a security context bypass during the CRI CreateContainer checkpoint restore process. The root cause is that the CRIU tool restores the process security state from the checkpoint data instead ...

seccomp-tools

Seccomp Tools Potentes herramientas para el análisis de seccomp. Este proyecto está orientado principalmente pero no exclusivamente al análisis de sandboxes seccomp en retos pwn de CTF. Algunas funciones son específicas de CTF, pero son igualmente útiles para analizar filtros seccomp del mundo...

Rocky Linux 10.2 [CIQ] Security Update: kernel / kernel-64k / kernel-64k-core / kernel-64k-debug / etc Multiple Vulnerabilities (crlsa-2026_61887)

The Rocky Linux 10.2 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-202661887 advisory. kernel: seccomp: passthrough uretprobe systemcall without filtering CVE-2025-21834 kernel: ip6tunnel: use skbvlaninetprepare in ip6tnlrcv CVE-2026-2300...