Linux Kernel 6.2 - Userspace Processes To Enable Mitigation

Exploit Title: Linux Kernel 6.2 - Userspace Processes To Enable Mitigation Exploit Author: nu11secur1ty CVE ID: CVE-2023-1998 Description Summary The Linux kernel allows userspace processes to enable mitigations by calling prctl with PRSETSPECULATIONCTRL which disables the speculation feature as...

Linux Kernel 6.2 - Userspace Processes To Enable Mitigation Exploit

Exploit Title: Linux Kernel 6.2 - Userspace Processes To Enable Mitigation Exploit Author: nu11secur1ty CVE ID: CVE-2023-1998 Description Summary The Linux kernel allows userspace processes to enable mitigations by calling prctl with PRSETSPECULATIONCTRL which disables the speculation feature as...

Missing Linux Kernel mitigations for 'Cross-Thread Return Address Predictions' hardware vulnerability (AMD-SB-1045)

The remote host is missing one or more known mitigations on Linux Kernel side for the referenced 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-onl...

Oracle Linux 7 / 8 : Unbreakable Enterprise kernel-container (ELSA-2023-12256)

The remote Oracle Linux 7 / 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2023-12256 advisory. - Documentation/hw-vuln: Add documentation for Cross-Thread Return Predictions Tom Lendacky Orabug: 35166671 CVE-2022-27672 - KVM: x86: Mitigate t...

Oracle Linux 7 / 8 : Unbreakable Enterprise kernel (ELSA-2023-12255)

The remote Oracle Linux 7 / 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2023-12255 advisory. - Documentation/hw-vuln: Add documentation for Cross-Thread Return Predictions Tom Lendacky Orabug: 35166671 CVE-2022-27672 - KVM: x86: Mitigate t...

USN-6013-1 linux-aws vulnerabilities

Xuewei Feng, Chuanpu Fu, Qi Li, Kun Sun, and Ke Xu discovered that the TCP implementation in the Linux kernel did not properly handle IPID assignment. A remote attacker could use this to cause a denial of service connection termination or inject forged data. CVE-2020-36516 Ke Sun, Alyssa Milburn,...

Ubuntu 22.04 LTS : Linux kernel (Intel IoTG) vulnerabilities (USN-6004-1)

The remote Ubuntu 22.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-6004-1 advisory. It was discovered that the KVM VMX implementation in the Linux kernel did not properly handle indirect branch prediction isolation between L1 and L2 VMs...

Oracle Linux 8 / 9 : Unbreakable Enterprise kernel (ELSA-2023-12226)

The remote Oracle Linux 8 / 9 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2023-12226 advisory. 5.15.0-100.96.32 - crypto: Report fips module name and version for aarch64 Saeed Mirzamohammadi Orabug: 35225251 - uek-rpm: Enable RFC7919 config for aarch...

Ubuntu 18.04 LTS : Linux kernel vulnerabilities (USN-5985-1)

The remote Ubuntu 18.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-5985-1 advisory. It was discovered that the System V IPC implementation in the Linux kernel did not properly handle large shared memory counts. A local attacker could use...

Ubuntu 22.04 LTS : Linux kernel (HWE) vulnerabilities (USN-5979-1)

The remote Ubuntu 22.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-5979-1 advisory. It was discovered that the KVM VMX implementation in the Linux kernel did not properly handle indirect branch prediction isolation between L1 and L2 VMs...

Ubuntu 22.04 LTS : Linux kernel (OEM) vulnerabilities (USN-5978-1)

The remote Ubuntu 22.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-5978-1 advisory. It was discovered that the Traffic-Control Index TCINDEX implementation in the Linux kernel contained a use-after-free vulnerability. A local attacker...

Ubuntu 22.04 LTS : Linux kernel (OEM) vulnerabilities (USN-5977-1)

The remote Ubuntu 22.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-5977-1 advisory. It was discovered that the Traffic-Control Index TCINDEX implementation in the Linux kernel contained a use-after-free vulnerability. A local attacker...

Ubuntu 22.10 : Linux kernel vulnerabilities (USN-5970-1)

The remote Ubuntu 22.10 host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-5970-1 advisory. It was discovered that the KVM VMX implementation in the Linux kernel did not properly handle indirect branch prediction isolation between L1 and L2 VMs. An...

Important: kernel

Issue Overview: A regression exists in the Linux Kernel within KVM: nVMX that allowed for speculative execution attacks. L2 can carry out Spectre v2 attacks on L1 due to L1 thinking it doesn't need retpolines or IBPB after running L2 due to KVM L0 advertising eIBRS support to L1. An attacker at L...

Amazon Linux 2023 : bpftool, kernel, kernel-devel (ALAS2023-2023-127)

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2023-127 advisory. A regression exists in the Linux Kernel within KVM: nVMX that allowed for speculative execution attacks. L2 can carry out Spectre v2 attacks on L1 due to L1 thinking it doesn't need retpolines ...

K26301924: Linux kernel vulnerability CVE-2018-15594

Security Advisory Description arch/x86/kernel/paravirt.c in the Linux kernel before 4.18.1 mishandles certain indirect calls, which makes it easier for attackers to conduct Spectre-v2 attacks against paravirtual guests. CVE-2018-15594 Impact Traffix SDC When this vulnerability is exploited, an...

SUSE CVE-2018-15594

arch/x86/kernel/paravirt.c in the Linux kernel before 4.18.1 mishandles certain indirect calls, which makes it easier for attackers to conduct Spectre-v2 attacks against paravirtual guests...

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

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

Fedora 36 : kernel / kernel-headers / kernel-tools (2023-3fd7349f60)

The remote Fedora 36 host has packages installed that are affected by multiple vulnerabilities as referenced in the FEDORA-2023-3fd7349f60 advisory. The 6.1.5 stable kernel rebase contains new features, enhanced hardware support, and a number of important fixes across the tree. Tenable has...

CVE-2022-2196

A flaw was found in the KVM's Intel nested virtualization feature nVMX. Since L1 and L2 shared branch prediction modes guest-user and guest-kernel, KVM did not protect indirect branches in L1 from steering by a malicious agent in L2. This could allow a malicious nested guest to carry out Spectre ...