Jump-over-ASLR-BTB

Branch Predictors & ASLR Author: Byte Reaper Description This repository contains research C implementation that demonstrates concepts related to branch predictors, speculative execution, and cache-based side channels in the context of address space layout randomization ASLR. Requirements : Linux...

CVE-2023-0045

Bypassing Spectre-BTI User Space Mitigations on Linux This is a working document, please send us feedback if you think we got something wrong or if we missed a citation Version 1.0 José Oliveira esoj Rodrigo Branco BSDaemon Introduction When testing the success rate of Spectre-BTI attacks, we...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

The current implementation of the prctl syscall does not issue an IBPB immediately during the syscall. The ibprctlset function updates the Thread Information Flags TIFs for the task and updates the SPECCTRL MSR in the function speculationctrlupdate, but the IBPB is only issued at the next schedul...

CVE-2026-23553: Improper Initialization

In the context switch logic Xen attempts to skip an IBPB in the case of a vCPU returning to a CPU on which it was the previous vCPU to run. While safe for Xen's isolation between vCPUs, this prevents the guest kernel correctly isolating between tasks. Consider: 1 vCPU runs on CPU A, running task ...

microcode_ctl: From CVEorg collector

New Spectre-v2 attack classes have been discovered within CPU architectures that enable self-training exploitation of speculative execution within the same privilege domain. These novel techniques bypass existing hardware and software mitigations, including IBPB, eIBRS, and BHINO, by leveraging...

microcode_ctl: From CVEorg collector

New Spectre-v2 attack classes have been discovered within CPU architectures that enable self-training exploitation of speculative execution within the same privilege domain. These novel techniques bypass existing hardware and software mitigations, including IBPB, eIBRS, and BHINO, by leveraging...

New Intel CPU Vulnerability 'Indirector' Exposes Sensitive Data

Modern CPUs from Intel, including Raptor Lake and Alder Lake, have been found vulnerable to a new side-channel attack that could be exploited to leak sensitive information from the processors. The attack, codenamed Indirector by security researchers Luyi Li, Hosein Yavarzadeh, and Dean Tullsen,...

DEBIAN-CVE-2023-0045

The current implementation of the prctl syscall does not issue an IBPB immediately during the syscall. The ibprctlset function updates the Thread Information Flags TIFs for the task and updates the SPECCTRL MSR on the function speculationctrlupdate, but the IBPB is only issued on the next...

CVE-2023-0045

The current implementation of the prctl syscall does not issue an IBPB immediately during the syscall. The ibprctlset function updates the Thread Information Flags TIFs for the task and updates the SPECCTRL MSR on the function speculationctrlupdate, but the IBPB is only issued on the next...

CVE-2023-0045: Externally Controlled Reference to a Resource in Another Sphere

The current implementation of the prctl syscall does not issue an IBPB immediately during the syscall. The ibprctlset function updates the Thread Information Flags TIFs for the task and updates the SPECCTRL MSR on the function speculationctrlupdate, but the IBPB is only issued on the next...

Exploit for Externally Controlled Reference to a Resource in Another Sphere in Linux Linux_Kernel

Bypassing Spectre-BTI User Space Mitigations on Linux Th...

F5 Networks BIG-IP : Side-channel processor vulnerabilities (K91229003)

The following three side-channel attacks were publicly disclosed on January 3, 2018 : CVE-2017-5715 Spectre-BTB previously known as Spectre Variant 2 Branch target injection Systems with microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized disclosu...

PT-2023-1383

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 4.9.176 Description The current implementation of the prctl syscall does not issue an IBPB immediately during the syscall. The ib prctl set function updates the Thread Information Flags TIFs for the task and...

Bypassing ASLR in 60 Milliseconds

Address Space Layout Randomization was a champion hardening technology introduced in most major desktop and mobile operating systems as a mitigation against memory-based code-execution attacks. Bypassing ASLR, however, has become somewhat of a parlor game for attackers and white-hat researchers,...