btr

Branch Target Reuse BTR Artifacts This repository contains the artifacts for the paper "Branch Target Reuse: Practical Spectre-v2 Attacks in JIT Engines via Stale Branch Prediction Entries" accepted at ACM CCS 2026. For more information about the BTR attack, see our project-page and our paper! bt...

kernel: x86/bugs: Enable IBPB flush on BPF JIT allocation

A flaw was found in the Linux kernel. This vulnerability involves an incomplete defense against Spectre-v2, a type of attack that can expose sensitive information by exploiting how modern processors predict future operations. Specifically, when the Berkeley Packet Filter BPF Just-In-Time JIT...

kernel: x86/bugs: Enable IBPB flush on BPF JIT allocation

A flaw was found in the Linux kernel. This vulnerability involves an incomplete defense against Spectre-v2, a type of attack that can expose sensitive information by exploiting how modern processors predict future operations. Specifically, when the Berkeley Packet Filter BPF Just-In-Time JIT...

kernel: bpf: Support for hardening against JIT spraying

A flaw was found in the Linux kernel's Berkeley Packet Filter BPF Just-In-Time JIT compiler. The BPF JIT allocator reuses memory space, and when new code is written, an indirect jump into the new program can reuse a branch prediction left behind by an old program. This could allow an attacker to...

AZL-104495 CVE-2026-98041 affecting package kernel 6.6.157.1-1

In the Linux kernel, the following vulnerability has been resolved: bpf: Don't predict JMP32 pointer vs zero comparisons Consider the following program: r1 = mapvalue; / low 32 bits are zero at runtime / r6 = 0xdead000000000000; if w1 != 0 goto l1; l0: r1 += r6; r2 = u64 r1 + 0; exit; l1: r6 = 0;...

VulnCheck KEV: CVE-2017-5753

Systems with microprocessors utilizing speculative execution and branch prediction may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis...

ROS-20260904-73-0002

The vulnerability of the Branch Prediction Unit BPU in Intel Core Ultra microprogramming devices is related to incorrect initialization of resources. Exploiting this vulnerability can allow attackers to disclose protected information...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

Mis-trained branch predictions for return instructions may allow arbitrary speculative code execution under certain microarchitecture-dependent conditions...

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-099950)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-099950 advisory. In the Linux kernel, the following vulnerability has been resolved: arm64: Add support for TSV110 Spectre-BHB mitigation The TSV110 processor is vulnerable to the...

AZL-93857 CVE-2026-64508 affecting package kernel for versions less than 6.6.145.2-1

In the Linux kernel, the following vulnerability has been resolved: bpf: Support for hardening against JIT spraying The BPF JIT allocator packs many small programs into larger executable allocations and reuses space within those allocations as programs are loaded and freed. When fresh code is...

CVE-2026-64508

In the Linux kernel, the following vulnerability has been resolved: bpf: Support for hardening against JIT spraying The BPF JIT allocator packs many small programs into larger executable allocations and reuses space within those allocations as programs are loaded and freed. When fresh code is...

CVE-2026-64508: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: bpf: Support for hardening against JIT spraying The BPF JIT allocator packs many small programs into larger executable allocations and reuses space within those allocations as programs are loaded and freed. When fresh code is...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: s390/entry: Scrub r12 register on kernel entry Before the commit of f33f2d4c7c80 “s390/bp: remove TIFISOLATEBP”, all entry handlers loaded r12 with the current task pointer lg %r12, LCCURRENT for use by the BPENTER/BPEXIT macros...

EUVD-2026-27822

In the Linux kernel, the following vulnerability has been resolved: arm64: Add support for TSV110 Spectre-BHB mitigation The TSV110 processor is vulnerable to the Spectre-BHB Branch History Buffer attack, which can be exploited to leak information through branch prediction side channels. This...

Linux Kernel Security Vulnerabilities

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 TSV110 processor’s susceptibility to Spectre-BHB attacks, potentially leading to information...

MiracleLinux 4 : gcc-4.4.7-18.2.0.1.AXS4 (AXBA:2018-3035:03)

The remote MiracleLinux 4 host has packages installed that are affected by a vulnerability as referenced in the AXBA:2018-3035:03 advisory. - Systems with microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized disclosure of information to an attacker...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-001661)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-001661 advisory. Systems with microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized disclosure of information to an attacker with loca...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-003117)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-003117 advisory. Systems with microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized disclosure of information to an attacker with loca...

Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-002631)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-002631 advisory. Systems with microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized disclosure of information to an attacker with loca...

Unity Linux 20.1070e Security Update: kernel (UTSA-2026-000499)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-000499 advisory. A flaw was found in the Linux kernel before 5.8-rc1 in the implementation of the Enhanced IBPB Indirect Branch Prediction Barrier. The IBPB mitigation will be disabl...