kernel: xen: AMD Zen 2 Processors: Privilege escalation via improper CPU cache isolation

A flaw was found in AMD Zen 2-based processors, affecting components such as the kernel and Xen hypervisor. Improper isolation of shared resources within the CPU operation cache could allow an attacker to corrupt instructions executed at a different privilege level. This could potentially result ...

Important: Red Hat Security Advisory: kernel security update

An update for kernel is now available for Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions and Red Hat Enterprise Linux 8.8 Telecommunications Update Service. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring Syst...

kernel: xen: AMD Zen 2 Processors: Privilege escalation via improper CPU cache isolation

A flaw was found in AMD Zen 2-based processors, affecting components such as the kernel and Xen hypervisor. Improper isolation of shared resources within the CPU operation cache could allow an attacker to corrupt instructions executed at a different privilege level. This could potentially result ...

Important: Red Hat Security Advisory: kernel security, bug fix, and enhancement update

An update for kernel is now available for Red Hat Enterprise Linux 9.6 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for...

kernel: xen: AMD Zen 2 Processors: Privilege escalation via improper CPU cache isolation

A flaw was found in AMD Zen 2-based processors, affecting components such as the kernel and Xen hypervisor. Improper isolation of shared resources within the CPU operation cache could allow an attacker to corrupt instructions executed at a different privilege level. This could potentially result ...

kernel: xen: AMD Zen 2 Processors: Privilege escalation via improper CPU cache isolation

A flaw was found in AMD Zen 2-based processors, affecting components such as the kernel and Xen hypervisor. Improper isolation of shared resources within the CPU operation cache could allow an attacker to corrupt instructions executed at a different privilege level. This could potentially result ...

New ZenHammer Attack Bypasses Rowhammer Defenses on AMD CPUs

Cybersecurity researchers from ETH Zurich have developed a new variant of the RowHammer DRAM dynamic random-access memory attack that, for the first time, successfully works against AMD Zen 2 and Zen 3 systems despite mitigations such as Target Row Refresh TRR. "This result proves that AMD system...

Ubuntu 20.04 LTS / 22.04 LTS : Linux kernel vulnerabilities (USN-6325-1)

The remote Ubuntu 20.04 LTS / 22.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-6325-1 advisory. Daniel Moghimi discovered that some IntelR Processors did not properly clear microarchitectural state after speculative execution of various...

[SECURITY] [DLA 3512-1] linux-5.10 security update

Debian LTS Advisory DLA-3512-1 [email protected] https://www.debian.org/lts/security/ Ben Hutchings August 2, 2023 https://wiki.debian.org/LTS Package : linux-5.10 Version : 5.10.179-3deb10u1 CVE ID : CVE-2023-2156 CVE-2023-3390 CVE-2023-3610 CVE-2023-20593 CVE-2023-31248 CVE-2023-35001...

Debian: Security Advisory (DSA-5461-1)

The remote host is missing an update for the Debian SPDX-FileCopyrightText: 2023 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

Debian: Security Advisory (DSA-5462-1)

The remote host is missing an update for the Debian SPDX-FileCopyrightText: 2023 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

[SECURITY] [DSA 5461-1] linux security update

------------------------------------------------------------------------- Debian Security Advisory DSA-5461-1 [email protected] https://www.debian.org/security/ Salvatore Bonaccorso July 30, 2023 https://www.debian.org/security/faq -...

Zenbleed: cross-process infoleak vulnerability in AMD Zen 2 Processors - everything you need to know

Learn about the impact in cloud environments of CVE-2023-20593, a cross-process information leak vulnerability in AMD Zen 2 Processors...

Cross-Process Information Leak

Bulletin ID: AMD-SB-7008 Potential Impact: Information disclosure Severity: Medium Summary Under specific microarchitectural circumstances, a register in “Zen 2” CPUs may not be written to 0 correctly. This may cause data from another process and/or thread to be stored in the YMM register, which...

Vulnerabilities fixed in Citrix Hypervisor

Vulnerabilities have been fixed in Citrix Hypervisor and Citrix XenServer. The vulnerabilities potentially enable a malicious party to able to derive memory content from another virtual machine. These vulnerabilities are only present when the vulnerable products are used on AMD Zen 1 or AMD Zen 2...