nullmap

nullmap 一个非常简单的驱动手动映射器，基于我早期的 voidmap 和 CVE-2023-21768 POC，由 chompie 和 b33f 完成。由于底层 IoRing 后利用内存读/写原语无法很好地处理大量连续的读取和写入，我决定覆写 CR4 来禁用 SMEP/SMAP，以执行映射到用户态的驱动。已在 Windows 11 22H2 22621.525 上测试。 用法： nullmap.exe 可能的问题： 手动映射的驱动会位于由 ExAllocatePool 分配的内存池中。如果你想将其用于更严肃的目的，应该考虑寻找更好的内存分配方式，使其不易被转储。...

CVE-2026-64229

In the Linux kernel, the following vulnerability has been resolved: x86/mm: Disable broadcast TLB flush when PCID is disabled Booting with "nopcid" clears X86FEATUREPCID and keeps CR4.PCIDE from being set to one. On AMD CPUs that support INVLPGB, broadcast TLB flushing remains enabled. There are...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: x86/cpu: The X86CR4FRED bit was removed from the CR4 pinned bits mask. The commit in “Fixes” added the FRED CR4 bit to the CR4 pinned bits mask, so that whenever other processes modify CR4, that bit remains set. This is a perfect...

CVE-2026-31561

A flaw was found in the Linux kernel's handling of the CR4 pinned bits mask for FRED Flexible Return and Event Delivery. An attacker could exploit this by modifying a specific bit in memory to disable CR4 pinning, potentially leading to a system crash. This vulnerability could result in a Denial ...

DEBIAN-CVE-2026-31561

In the Linux kernel, the following vulnerability has been resolved: x86/cpu: Remove X86CR4FRED from the CR4 pinned bits mask Commit in Fixes added the FRED CR4 bit to the CR4 pinned bits mask so that whenever something else modifies CR4, that bit remains set. Which in itself is a perfectly fine...

CVE-2026-31561

In the Linux kernel, the following vulnerability has been resolved: x86/cpu: Remove X86CR4FRED from the CR4 pinned bits mask Commit in Fixes added the FRED CR4 bit to the CR4 pinned bits mask so that whenever something else modifies CR4, that bit remains set. Which in itself is a perfectly fine...

CVE-2026-31561

CVE-2026-31561 affects the Linux kernel: the fix removes the X86_CR4_FRED bit from the CR4 pinning mask to avoid a boot-time window where exceptions cannot be handled. The vulnerability is detailed as a problem where FRED was temporarily disabled during AP boot, which could let an attacker modify...

CVE-2026-31561 x86/cpu: Remove X86_CR4_FRED from the CR4 pinned bits mask

In the Linux kernel, the following vulnerability has been resolved: x86/cpu: Remove X86CR4FRED from the CR4 pinned bits mask Commit in Fixes added the FRED CR4 bit to the CR4 pinned bits mask so that whenever something else modifies CR4, that bit remains set. Which in itself is a perfectly fine...

EUVD-2026-25454

In the Linux kernel, the following vulnerability has been resolved: x86/cpu: Remove X86CR4FRED from the CR4 pinned bits mask Commit in Fixes added the FRED CR4 bit to the CR4 pinned bits mask so that whenever something else modifies CR4, that bit remains set. Which in itself is a perfectly fine...

CVE-2026-31561 x86/cpu: Remove X86_CR4_FRED from the CR4 pinned bits mask

In the Linux kernel, the following vulnerability has been resolved: x86/cpu: Remove X86CR4FRED from the CR4 pinned bits mask Commit in Fixes added the FRED CR4 bit to the CR4 pinned bits mask so that whenever something else modifies CR4, that bit remains set. Which in itself is a perfectly fine...

CVE-2026-31561

In the Linux kernel, the following vulnerability has been resolved: x86/cpu: Remove X86CR4FRED from the CR4 pinned bits mask Commit in Fixes added the FRED CR4 bit to the CR4 pinned bits mask so that whenever something else modifies CR4, that bit remains set. Which in itself is a perfectly fine...

CVE-2026-31561: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: x86/cpu: Remove X86CR4FRED from the CR4 pinned bits mask Commit in Fixes added the FRED CR4 bit to the CR4 pinned bits mask so that whenever something else modifies CR4, that bit remains set. Which in itself is a perfectly fine...

Linux kernel 安全漏洞

The Linux kernel is the core of the open-source operating system Linux, developed by the Linux Foundation in the United States. There is a security vulnerability in the Linux kernel, which stems from the inclusion of FRED CR4 bits within the CR4 fixed bit mask. This causes an abnormal inability t...

Linux Distros Unpatched Vulnerability : CVE-2026-31561

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - x86/cpu: Remove X86CR4FRED from the CR4 pinned bits mask Commit in Fixes added the FRED CR4 bit to the CR4 pinned bits mask so that whenever something else...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-002284)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-002284 advisory. arch/x86/kvm/vmx.c in the KVM subsystem in the Linux kernel before 3.17.2 on Intel processors does not ensure that the value in the CR4 control register remains the...

EUVD-2019-7758

Malware in sbrugna...

EUVD-2007-5877

Malware in sbrugna...

EUVD-2023-34873

Malicious code in bioql PyPI...

Linux Distros Unpatched Vulnerability : CVE-2019-17347

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - An issue was discovered in Xen through 4.11.x allowing x86 PV guest OS users to cause a denial of service or gain privileges because a guest can manipulate its...

CVE-2024-46721

In the Linux kernel, the following vulnerability has been resolved: apparmor: fix possible NULL pointer dereference profile-parent-dentsAAFSPROFDIR could be NULL only if its parent is made from createmissingancestors.. and 'ent-old' is NULL in aareplaceprofiles... In that case, it must return an...