CVE-2020-36312

An issue was discovered in the Linux kernel before 5.8.10. virt/kvm/kvmmain.c has a kvmiobusunregisterdev memory leak upon a kmalloc failure, aka CID-f65886606c2d...

CVE-2020-36313

CVE-2020-36313 affects the Linux kernel before 5.7. The KVM subsystem allows out‑of‑range access to memslots after a deletion (CID-0774a964ef56), impacting arch/s390/kvm/kvm-s390.c, include/linux/kvm_host.h, and virt/kvm/kvm_main.c. Root cause is a memslot handling bug in KVM/s390; exploitation d...

CVE-2020-36313

An issue was discovered in the Linux kernel before 5.7. The KVM subsystem allows out-of-range access to memslots after a deletion, aka CID-0774a964ef56. This affects arch/s390/kvm/kvm-s390.c, include/linux/kvmhost.h, and virt/kvm/kvmmain.c...

CVE-2020-36313

An issue was discovered in the Linux kernel before 5.7. The KVM subsystem allows out-of-range access to memslots after a deletion, aka CID-0774a964ef56. This affects arch/s390/kvm/kvm-s390.c, include/linux/kvmhost.h, and virt/kvm/kvmmain.c...

Kernel: KVM: host stack overflow due to lazy update IOAPIC

A stack overflow flaw via an infinite loop condition issue was found in the KVM hypervisor of the Linux kernel. This flaw occurs while processing interrupts because the IRQ state is erroneously set. This flaw allows a guest user to crash the host kernel, resulting in a denial of service. The...

Linux kernel 代码问题漏洞

The Linux kernel is a computer operating system kernel written in C and assembly language, compliant with the POSIX standard, and distributed under the GNU General Public License. A null pointer dereference vulnerability exists in synicget in arch/x86/kvm/hyperv.c in Linux kernel 5.11.11 and...

Red Hat Enterprise Linux 缓冲区错误漏洞

Red Hat Enterprise Linux is a Linux operating system for business users from Red Hat. A security vulnerability exists in qemu-kvm in the Red Hat Enterprise Linux 8.3 distribution...

Linux kernel 安全漏洞

The Linux kernel is a computer operating system kernel written in C and assembly language, compliant with the POSIX standard, and distributed under the GNU General Public License. A kvmiobusunregisterdev memory leak vulnerability exists in virt/kvm/kvmmain.c in versions of Linux kernel prior to...

Moderate: Red Hat Security Advisory: virt:rhel and virt-devel:rhel security update

An update for the virt:rhel and virt-devel:rhel modules is now available for Red Hat Enterprise Linux 8. 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...

QEMU: Regression of CVE-2020-10756 fix in virt:rhel/qemu-kvm in Red Hat Enterprise Linux 8.3

It was discovered that the update for the virt:rhel module in the RHSA-2020:4676 https://access.redhat.com/errata/RHSA-2020:4676 erratum released as part of Red Hat Enterprise Linux 8.3 failed to include the fix for the qemu-kvm component issue CVE-2020-10756, which was previously corrected in...

RLSA-2021:1064 Moderate: virt:rhel and virt-devel:rhel security update

Kernel-based Virtual Machine KVM offers a full virtualization solution for Linux on numerous hardware platforms. The virt:Rocky Linux module contains packages which provide user-space components used to run virtual machines using KVM. The packages also provide APIs for managing and interacting wi...

ALSA-2021:1064 Moderate: virt:rhel and virt-devel:rhel security update

Kernel-based Virtual Machine KVM offers a full virtualization solution for Linux on numerous hardware platforms. The virt:rhel module contains packages which provide user-space components used to run virtual machines using KVM. The packages also provide APIs for managing and interacting with the...

Moderate: virt:rhel and virt-devel:rhel security update

Kernel-based Virtual Machine KVM offers a full virtualization solution for Linux on numerous hardware platforms. The virt:rhel module contains packages which provide user-space components used to run virtual machines using KVM. The packages also provide APIs for managing and interacting with the...

virt:rhel and virt-devel:rhel security update

An update is available for libnbd, nbdkit, libguestfs-winsupport, supermin, libiscsi, hivex, netcf, perl-Sys-Virt, seabios, sgabios, libvirt-dbus, libvirt-python. This update affects Rocky Linux 8. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is...

Buffer Overflows

linux-kvm is vulnerable to buffer overflows. An out-of-bounds OOB memory access flaw was found in x25bind in net/x25/afx25.c in the Linux kernel. A bounds check failure allows a local attacker with a user account on the system to gain access to out-of-bounds memory leading to a system crash or a...

CVE-2021-29657

arch/x86/kvm/svm/nested.c in the Linux kernel before 5.11.12 has a use-after-free in which an AMD KVM guest can bypass access control on host OS MSRs when there are nested guests, aka CID-a58d9166a756. This occurs because of a TOCTOU race condition associated with a VMCB12 double fetch in...

UBUNTU-CVE-2021-29657

arch/x86/kvm/svm/nested.c in the Linux kernel before 5.11.12 has a use-after-free in which an AMD KVM guest can bypass access control on host OS MSRs when there are nested guests, aka CID-a58d9166a756. This occurs because of a TOCTOU race condition associated with a VMCB12 double fetch in...

USN-4890-1: Linux kernel vulnerabilities

Piotr Krysiuk discovered that the BPF subsystem in the Linux kernel did not properly compute a speculative execution limit on pointer arithmetic in some situations. A local attacker could use this to expose sensitive information kernel memory. CVE-2020-27171 Piotr Krysiuk discovered that the BPF...

Ubuntu: Security Advisory (USN-4890-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2021 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-4887-1: Linux kernel vulnerabilities

De4dCr0w of 360 Alpha Lab discovered that the BPF verifier in the Linux kernel did not properly handle mod32 destination register truncation when the source register was known to be 0. A local attacker could use this to expose sensitive information kernel memory or possibly execute arbitrary code...