CVE-2020-14372

CVE-2020-14372: Bypassing not so Secure Boot with one "simple trick" Vulnerability details One day I typed "help" into GRUB2's console and saw some really "fun" commands: readbyte ADDR: Read 8-bit value from ADDR writebyte ADDR VAL: Write 8-bit value VAL to ADDR I immediately thought I found the...

CVE-2026-90315

A flaw was found in the Linux kernel's PCI/sysfs legacy I/O and memory handlers. These handlers failed to enforce kernel lockdown, a security mechanism designed to prevent privileged users from performing certain low-level operations. A local root user could exploit this by writing to arbitrary I...

CVE-2020-15780-exploit

American Unsigned Language by zx2c4 These are two exploits to disable kernel lockdown via ACPI table injection. american-unsigned-language.sh is for Ubuntu 18.04 Bionic's 4.15 kernel with their custom patches and uses one technique. CVE-2019-20908. american-unsigned-language-2.sh is for...

CVE-2026-31787

XSA-487 / CVE-2026-31787 Linux kernel double free in Xen privcmd driver A double free of kernel memory in the Linux kernel's Xen privcmd driver allows circumvention of kernel lockdown secure boot. Exploitation requires root-level access, which limits the broader security implications. | ---|---...

SUSE CVE-2026-90315

In the Linux kernel, the following vulnerability has been resolved: PCI/sysfs: Add lockdown checks to legacy I/O and memory handlers Currently, the legacy I/O and memory sysfs handlers do not check securitylockeddownLOCKDOWNPCIACCESS, leaving the legacyio and legacymem files unprotected when the...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: ksmbd: The rcubarrier function was called in ksmbdserverexit. The bug is triggered due to racing between closing a connection and the rmmod operation. In ksmbd, rcubarrier is not called at the time of module unloading, so nothing...

Astra Linux – Vulnerability in grub2

A flaw was discovered in grub2 in versions prior to 2.06, where it incorrectly enabled the use of the ACPI command when Secure Boot was enabled. This flaw allows an attacker with privileged access to create a Secondary System Description Table SSDT containing code that can overwrite the Linux...

CVE-2026-80867

In the Linux kernel, the following vulnerability has been resolved: alpha/PCI: Add securitylockeddown check to pcimmapresource Currently, Alpha's pcimmapresource does not check securitylockeddownLOCKDOWNPCIACCESS before allowing userspace to mmap PCI BARs. The generic version has had this check...

Exploit for Double Free in Linux Linux_Kernel

XSA-487 / CVE-2026-31787 Linux kernel double free in Xen pr...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: grub2 (UTSA-2026-017485)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-017485 advisory. A flaw was found in grub2 in versions prior to 2.06, where it incorrectly enables the usage of the ACPI command when Secure Boot is enabled. This flaw allows an...

Linux privcmd driver can circumvent kernel lockdown

ISSUE DESCRIPTION The Linux kernel's privcmd driver can be abused to circumvent kernel lockdown secure boot, e.g. by modifying page tables to enable user mode to modify kernel memory. IMPACT An administrator of an unprivileged guest booted in secure mode is able to perform actions on the kernel...

CVE-2025-1272

The Linux Kernel lockdown mode for kernel versions starting on 6.12 and above for Fedora Linux has the lockdown mode disabled without any warning. This may allow an attacker to gain access to sensitive information such kernel memory mappings, I/O ports, BPF and kprobes. Additionally unsigned...

UBUNTU-CVE-2025-1272

The Linux Kernel lockdown mode for kernel versions starting on 6.12 and above for Fedora Linux has the lockdown mode disabled without any warning. This may allow an attacker to gain access to sensitive information such kernel memory mappings, I/O ports, BPF and kprobes. Additionally unsigned...

CVE-2025-1272 Kernel: secure boot does not automatically enable kernel lockdown

The Linux Kernel lockdown mode for kernel versions starting on 6.12 and above for Fedora Linux has the lockdown mode disabled without any warning. This may allow an attacker to gain access to sensitive information such kernel memory mappings, I/O ports, BPF and kprobes. Additionally unsigned...

CVE-2025-1272

Summary (CVE-2025-1272) : The Fedora Linux kernel lockdown mode for kernels starting with 6.12 is reported to be disabled without warning, enabling potential exposure of sensitive kernel data (memory mappings, I/O ports, BPF, and kprobes) and allowing unsigned modules to load, which could break S...

PT-2026-27499

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description The Xen privcmd driver allows user space processes to issue arbitrary hypercalls. Normally, access is limited to root and the hypervisor denies hypercalls affecting other domains. Howeve...

TencentOS Server 3: kernel (TSSA-2024:1022)

The version of Tencent Linux installed on the remote TencentOS Server 3 host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the TSSA-2024:1022 advisory. Package updates are available for TencentOS Server 3 that fix the following vulnerabilities...

Linux Distros Unpatched Vulnerability : CVE-2023-32246

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ksmbd: call rcubarrier in ksmbdserverexit racy issue is triggered the bug by racing between closing a connection and rmmod. In ksmbd, rcubarrier is not called a...

CVE-2023-32246

In the Linux kernel, the following vulnerability has been resolved: ksmbd: call rcubarrier in ksmbdserverexit racy issue is triggered the bug by racing between closing a connection and rmmod. In ksmbd, rcubarrier is not called at module unload time, so nothing prevents ksmbd from getting unloaded...

DEBIAN-CVE-2023-32246

In the Linux kernel, the following vulnerability has been resolved: ksmbd: call rcubarrier in ksmbdserverexit racy issue is triggered the bug by racing between closing a connection and rmmod. In ksmbd, rcubarrier is not called at module unload time, so nothing prevents ksmbd from getting unloaded...