Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that stems from the fact that if nrcpus nriaa, the computed cpusperiaa will be 0, which can lead to division by 0 in...

Exploiting the Conditional Branch Predictor

AMD ID: AMD-SB-7015 Potential Impact: N/A Severity: N/A Summary Researchers from the University of California San Diego have shared with AMD a paper titled “Pathfinder: High-Resolution Control-Flow Attacks Exploiting the Conditional Branch Predictor” that explores methods for forcing a branch...

Moderate: Red Hat Security Advisory: kernel security and bug fix update

An update for kernel is now available for Red Hat Enterprise Linux 8.6 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for...

RHEL 8 : kernel (RHSA-2024:1877)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2024:1877 advisory. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: hw: cpu: AMD CPUs may transiently...

CVE-2024-26841

A flaw was found in the Linux kernel. This vulnerability specifically affects LoongArch processors. The issue is related to the CPU sibling map, which is not correctly updated when non-boot CPUs are disabled. This issue could lead to errors on Symmetric Multi-Threading SMT systems, such as...

UBUNTU-CVE-2024-26841

In the Linux kernel, the following vulnerability has been resolved: LoongArch: Update cpusiblingmap when disabling nonboot CPUs Update cpusiblingmap when disabling nonboot CPUs by defining & calling clearcpusiblingmap, otherwise we get such errors on SMT systems: jump label: negative count!...

CVE-2024-26841

Exposed CVE-2024-26841 affecting LoongArch Linux kernels: when disabling nonboot CPUs, cpu_sibling_map is not updated, risking negative jump-label counts on SMT systems. A fix defines and calls clear_cpu_sibling_map() to refresh the mapping, mitigating a potential kernel instability (jump_label w...

CVE-2024-26841 LoongArch: Update cpu_sibling_map when disabling nonboot CPUs

In the Linux kernel, the following vulnerability has been resolved: LoongArch: Update cpusiblingmap when disabling nonboot CPUs Update cpusiblingmap when disabling nonboot CPUs by defining & calling clearcpusiblingmap, otherwise we get such errors on SMT systems: jump label: negative count!...

CVE-2024-26841 LoongArch: Update cpu_sibling_map when disabling nonboot CPUs

In the Linux kernel, the following vulnerability has been resolved: LoongArch: Update cpusiblingmap when disabling nonboot CPUs Update cpusiblingmap when disabling nonboot CPUs by defining & calling clearcpusiblingmap, otherwise we get such errors on SMT systems: jump label: negative count!...

PT-2024-21526 · Linux +1 · Linux Kernel +1

Name of the Vulnerable Software and Affected Versions: Linux kernel versions prior to 6.8.0-rc5+ Description: The issue is related to the LoongArch architecture in the Linux kernel. When disabling non-boot CPUs, the cpu sibling map is not updated correctly, leading to errors on SMT systems, such ...

XenServer and Citrix Hypervisor Security Update for CVE-2023-46842, CVE-2024-2201 and CVE-2024-31142

Description of Problem Two issues have been identified that affect XenServer and Citrix Hypervisor; each issue may allow malicious unprivileged code in a guest VM to infer the contents of memory belonging to its own or other VMs on the same host. These issues have the following identifiers:...

SUSE CVE-2024-26768

In the Linux kernel, the following vulnerability has been resolved: LoongArch: Change acpicorepicNRCPUS to acpicorepicMAXCOREPIC With default config, the value of NRCPUS is 64. When HW platform has more then 64 cpus, system will crash on these platforms. MAXCOREPIC is the maximum cpu number in MA...

CVE-2024-2201

A flaw was found in some Intel CPUs where mitigations for the Spectre V2/BHI vulnerability were incomplete. This issue may allow an attacker to read arbitrary memory, compromising system integrity and exposing sensitive information. Mitigation Mitigation for this issue is either not available or...

CVE-2024-26765

In the Linux kernel, the following vulnerability has been resolved: LoongArch: Disable IRQ before initfn for nonboot CPUs Disable IRQ before initfn for nonboot CPUs when hotplug, in order to silence such warnings and also avoid potential errors due to unexpected interrupts: WARNING: CPU: 1 PID: 0...

CVE-2024-26768

In the Linux kernel, the following vulnerability has been resolved: LoongArch: Change acpicorepicNRCPUS to acpicorepicMAXCOREPIC With default config, the value of NRCPUS is 64. When HW platform has more then 64 cpus, system will crash on these platforms. MAXCOREPIC is the maximum cpu number in MA...

DEBIAN-CVE-2024-26765

In the Linux kernel, the following vulnerability has been resolved: LoongArch: Disable IRQ before initfn for nonboot CPUs Disable IRQ before initfn for nonboot CPUs when hotplug, in order to silence such warnings and also avoid potential errors due to unexpected interrupts: WARNING: CPU: 1 PID: 0...

CVE-2024-26765

In the Linux kernel, the following vulnerability has been resolved: LoongArch: Disable IRQ before initfn for nonboot CPUs Disable IRQ before initfn for nonboot CPUs when hotplug, in order to silence such warnings and also avoid potential errors due to unexpected interrupts: WARNING: CPU: 1 PID: 0...

UBUNTU-CVE-2024-26765

In the Linux kernel, the following vulnerability has been resolved: LoongArch: Disable IRQ before initfn for nonboot CPUs Disable IRQ before initfn for nonboot CPUs when hotplug, in order to silence such warnings and also avoid potential errors due to unexpected interrupts: WARNING: CPU: 1 PID: 0...

UBUNTU-CVE-2024-26768

In the Linux kernel, the following vulnerability has been resolved: LoongArch: Change acpicorepicNRCPUS to acpicorepicMAXCOREPIC With default config, the value of NRCPUS is 64. When HW platform has more then 64 cpus, system will crash on these platforms. MAXCOREPIC is the maximum cpu number in MA...

CVE-2024-26765 LoongArch: Disable IRQ before init_fn() for nonboot CPUs

In the Linux kernel, the following vulnerability has been resolved: LoongArch: Disable IRQ before initfn for nonboot CPUs Disable IRQ before initfn for nonboot CPUs when hotplug, in order to silence such warnings and also avoid potential errors due to unexpected interrupts: WARNING: CPU: 1 PID: 0...