CVE-2021-3656

A flaw was found in the KVM's AMD code for supporting SVM nested virtualization. The flaw occurs when processing the VMCB virtual machine control block provided by the L1 guest to spawn/handle a nested guest L2. Due to improper validation of the "virtext" field, this issue could allow a malicious...

Fedora: Security Advisory for barrier (FEDORA-2022-09c1a5bab8)

The remote host is missing an update for the Copyright C 2022 Greenbone Networks GmbH 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-or-later This program is free software; you can...

[SECURITY] Fedora 35 Update: barrier-2.4.0-1.fc35

Barrier is software that mimics the functionality of a KVM switch, which historically would allow you to use a single keyboard and mouse to control multiple computers. Barrier does this in software, allowing you to tell it which machine to control by moving your mouse to the edge of the screen, o...

[SECURITY] Fedora 34 Update: barrier-2.4.0-1.fc34

Barrier is software that mimics the functionality of a KVM switch, which historically would allow you to use a single keyboard and mouse to control multiple computers. Barrier does this in software, allowing you to tell it which machine to control by moving your mouse to the edge of the screen, o...

SUSE-SU-2022:0615-1 Security update for the Linux Kernel (Live Patch 14 for SLE 15 SP3)

This update for the Linux Kernel 5.3.18-1503005949 fixes several issues. The following security issues were fixed: - CVE-2022-0516: Fixed KVM s390 return error on SIDA memop on normal guest bsc1195947. - CVE-2021-0920: Fixed a local privilege escalation due to an use after free bug in unixgc...

GSD-2022-1000665 KVM: arm64: Avoid consuming a stale esr value when SError occur

KVM: arm64: Avoid consuming a stale esr value when SError occur This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.16.8 by commit...

GSD-2022-1000625 KVM: arm64: pkvm: Use the mm_ops indirection for cache maintenance

KVM: arm64: pkvm: Use the mmops indirection for cache maintenance This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.16.5 by commit...

GSD-2022-1000612 KVM: x86: Forcibly leave nested virt when SMM state is toggled

KVM: x86: Forcibly leave nested virt when SMM state is toggled This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.16.5 by commit...

GSD-2022-1000611 KVM: x86: Free kvm_cpuid_entry2 array on post-KVM_RUN KVM_SET_CPUID{,2}

KVM: x86: Free kvmcpuidentry2 array on post-KVMRUN KVMSETCPUID,2 This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.16.5 by commit...

GSD-2022-1000610 KVM: LAPIC: Also cancel preemption timer during SET_LAPIC

KVM: LAPIC: Also cancel preemption timer during SETLAPIC This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.16.5 by commit...

GSD-2022-1000580 KVM: arm64: Avoid consuming a stale esr value when SError occur

KVM: arm64: Avoid consuming a stale esr value when SError occur This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.15.22 by commit...

GSD-2022-1000537 KVM: x86: nSVM: fix potential NULL derefernce on nested migration

KVM: x86: nSVM: fix potential NULL derefernce on nested migration This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.16.11 by commit...

GSD-2022-1000505 KVM: eventfd: Fix false positive RCU usage warning

KVM: eventfd: Fix false positive RCU usage warning This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.16.10 by commit...

GSD-2022-1000455 KVM: x86: nSVM: fix potential NULL derefernce on nested migration

KVM: x86: nSVM: fix potential NULL derefernce on nested migration This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.15.25 by commit...

GSD-2022-1000426 KVM: eventfd: Fix false positive RCU usage warning

KVM: eventfd: Fix false positive RCU usage warning This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.15.24 by commit...

GSD-2022-1000367 KVM: eventfd: Fix false positive RCU usage warning

KVM: eventfd: Fix false positive RCU usage warning This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.10.101 by commit...

Ubuntu: Security Advisory (USN-5295-2)

The remote host is missing an update for the SPDX-FileCopyrightText: 2022 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...

USN-5298-1: Linux kernel vulnerabilities

It was discovered that the Packet network protocol implementation in the Linux kernel contained a double-free vulnerability. A local attacker could use this to cause a denial of service system crash or possibly execute arbitrary code. CVE-2021-22600 Jürgen Groß discovered that the Xen subsystem...

USN-5294-2: Linux kernel vulnerabilities

It was discovered that the Packet network protocol implementation in the Linux kernel contained a double-free vulnerability. A local attacker could use this to cause a denial of service system crash or possibly execute arbitrary code. CVE-2021-22600 Szymon Heidrich discovered that the USB Gadget...

USN-5295-2: Linux kernel vulnerabilities

It was discovered that the Packet network protocol implementation in the Linux kernel contained a double-free vulnerability. A local attacker could use this to cause a denial of service system crash or possibly execute arbitrary code. CVE-2021-22600 Jann Horn discovered a race condition in the Un...