CVE-2026-98376

In the Linux kernel, the following vulnerability has been resolved: bpf: Use arraymapmetaequal for percpu array inner map replacement percpuarraymapops.mapmetaequal points to the generic bpfmapmetaequal, which does not compare maxentries. When a percpu array serves as an inner map, replacing it...

EUVD-2026-95531

In the Linux kernel, the following vulnerability has been resolved: bpf: Use arraymapmetaequal for percpu array inner map replacement percpuarraymapops.mapmetaequal points to the generic bpfmapmetaequal, which does not compare maxentries. When a percpu array serves as an inner map, replacing it...

CVE-2026-98376

The Linux kernel contains a vulnerability in the eBPF subsystem where percpu_array_map_ops.map_meta_equal incorrectly points to bpf_map_meta_equal(). Because the latter fails to compare max_entries, a percpu array used as an inner map can be replaced with a smaller one, bypassing size checks. Thi...

CVE-2026-98376 bpf: Use array_map_meta_equal for percpu array inner map replacement

In the Linux kernel, the following vulnerability has been resolved: bpf: Use arraymapmetaequal for percpu array inner map replacement percpuarraymapops.mapmetaequal points to the generic bpfmapmetaequal, which does not compare maxentries. When a percpu array serves as an inner map, replacing it...

CVE-2026-98377 vlan: require the MAC header to be present in __vlan_insert_inner_tag()

In the Linux kernel, the following vulnerability has been resolved: vlan: require the MAC header to be present in vlaninsertinnertag vlaninsertinnertag only guarantees head room via skbcowhead, never that maclen bytes of MAC header are present. Its ETHHLEN wrappers - vlaninserttag under...

Disable-TamperProtection

Disabling Tamper Protection and other Defender / MDE components It is possible to abuse SYSTEM / TrustedInstaller privileges to tamper or delete WdFilter settings ALTITUDE regkey and unload the kernel minidriver to disable Tamper protection and other Defender components. This also affects...

recon_2024_windbg_workshop

REcon 2024 - Tips & Tricks for better debugging with WinDbg This repository contains the materials created for the workshop "Tips & Tricks for better debugging with WinDbg", at REcon 2024. Setup The workshop materials aims to provide useful features for WinDbg, when debugging in kernel-mode, but...

experiments

Experiments Repository of various experiments / PoC. debugging-secure-kernel: PoC gdb debugging the Windows 10 secure kernel, on top of QEMU KVM dns: Experiments regarding DNS / Certificate transparency / Homoglyphs Attack Surface Reduction: Demystifying Windows Attack Surface Reduction internals...

germy

Overview germy is an NGSM Linux kernel privilege escalation exploit for versions 5.15-rc1 to 6.6-rc1. See TECHNICALDETAILS.md for information on the vulnerabilities and exploit techniques used. Tested on: Ubuntu LTS 20.04.6 5.15.x and 22.04.4 6.5.x Ubuntu non-LTS 23.10 6.5.x Debian 12.5 6.1.x Usa...

CVE-2026-98289

A flaw was found in the Linux kernel's UNIX domain socket afunix subsystem. A logic error in the socket garbage collection algorithm can prevent cyclical socket references from being properly identified and reclaimed. A local user could exploit this flaw to cause a resource leak, potentially...

CVE-2026-98239

A flaw was found in the Linux kernel's LAN743x network device driver. This vulnerability allows an attacker capable of transmitting network traffic to an affected system to cause a Denial of Service DoS or memory corruption. The issue occurs because the driver attempts to update checksum...

cve-2025-62215-exploit-poc

CVE-2025-62215 Proof-of-Concept ⚠️ WARNING - LEGAL AND ETHICAL NOTICE THIS CODE IS FOR EDUCATIONAL AND SECURITY RESEARCH PURPOSES ONLY. DO NOT use this code on systems you do not own or have explicit written permission to test DO NOT use this code for malicious purposes Unauthorized access to...

prefetch-tool

Windows KASLR Prefetch Tool A proof-of-concept tool for bypassing KASLR kernel ASLR on Windows 11. Inspired by EntryBleed for Linux. This tool was developed as part of an exploit targetting Windows 11 24H2. I am not a side-channel expert at all, so this was very much new territory for me and the...

CVE-2026-19575 Type confusion in the device_deinit system call allows user-mode threads to execute arbitrary kernel code

The user-mode verification handler for the devicedeinit system call, zvrfydevicedeinit in kernel/device.c, validated its dev argument with KSYSCALLOBJINITdev, KOBJANY. kobjectvalidate short-circuits its type comparison when the requested type is KOBJANY, so the check reduced to "this pointer is t...

EUVD-2026-95530

The user-mode verification handler for the devicedeinit system call, zvrfydevicedeinit in kernel/device.c, validated its dev argument with KSYSCALLOBJINITdev, KOBJANY. kobjectvalidate short-circuits its type comparison when the requested type is KOBJANY, so the check reduced to "this pointer is t...

CVE-2026-19575

A type confusion vulnerability exists in the device_deinit() system call within the Zephyr kernel (kernel/device.c ). The verification handler z_vrfy_device_deinit() incorrectly uses K_OBJ_ANY , causing k_object_validate() to skip type comparisons. This allows a user-mode thread to pass an arbitr...

CVE-2026-19575 Type confusion in the device_deinit system call allows user-mode threads to execute arbitrary kernel code

The user-mode verification handler for the devicedeinit system call, zvrfydevicedeinit in kernel/device.c, validated its dev argument with KSYSCALLOBJINITdev, KOBJANY. kobjectvalidate short-circuits its type comparison when the requested type is KOBJANY, so the check reduced to "this pointer is t...

EUVD-2026-95529

dynamicobjectcreate in kernel/userspace/userspace.c computed the backing allocation for a dynamically allocated kernel object as objsizegetotype + size, and for thread stack elements as STACKELEMENTDATASIZEsize a round-up plus fixed overhead, without checking either expression for unsigned...

CVE-2026-19569 Integer overflow in dynamic kernel object allocation allows user-mode threads to corrupt the kernel heap

dynamicobjectcreate in kernel/userspace/userspace.c computed the backing allocation for a dynamically allocated kernel object as objsizegetotype + size, and for thread stack elements as STACKELEMENTDATASIZEsize a round-up plus fixed overhead, without checking either expression for unsigned...

CVE-2026-19569 Integer overflow in dynamic kernel object allocation allows user-mode threads to corrupt the kernel heap

dynamicobjectcreate in kernel/userspace/userspace.c computed the backing allocation for a dynamically allocated kernel object as objsizegetotype + size, and for thread stack elements as STACKELEMENTDATASIZEsize a round-up plus fixed overhead, without checking either expression for unsigned...