CVE-2021-4095

A NULL pointer dereference was found in the Linux kernel's KVM when dirty ring logging is enabled without an active vCPU context. An unprivileged local attacker on the host may use this flaw to cause a kernel oops condition and thus a denial of service by issuing a KVMXENHVMSETATTR ioctl. This fl...

CVE-2021-4095

A NULL pointer dereference was found in the Linux kernel's KVM when dirty ring logging is enabled without an active vCPU context. An unprivileged local attacker on the host may use this flaw to cause a kernel oops condition and thus a denial of service by issuing a KVMXENHVMSETATTR ioctl. This fl...

CVE-2021-4095

CVE-2021-4095: Linux kernel KVM NULL pointer dereference when dirty ring logging is enabled without an active vCPU context allows an unprivileged local attacker to trigger a kernel oops/DoS via KVM_XEN_HVM_SET_ATTR; affects kernels before 5.17-rc1. Remediation is upgrading to a fixed kernel versi...

CVE-2021-4095: NULL Pointer Dereference

A NULL pointer dereference was found in the Linux kernel's KVM when dirty ring logging is enabled without an active vCPU context. An unprivileged local attacker on the host may use this flaw to cause a kernel oops condition and thus a denial of service by issuing a KVMXENHVMSETATTR ioctl. This fl...

Unbreakable Enterprise kernel security update

5.4.17-2136.304.4.4 - arm64: Use the clearbhb instruction in mitigations James Morse Orabug: 33921646 - arm64: add IDAA64ISAR2EL1 sys register Joey Gouly Orabug: 33921646 - KVM: arm64: Allow SMCCCARCHWORKAROUND3 to be discovered and migrated James Morse Orabug: 33921646 - arm64: Mitigate spectre...

Unbreakable Enterprise kernel-container security update

5.4.17-2136.304.4.4 - arm64: Use the clearbhb instruction in mitigations James Morse Orabug: 33921646 - arm64: add IDAA64ISAR2EL1 sys register Joey Gouly Orabug: 33921646 - KVM: arm64: Allow SMCCCARCHWORKAROUND3 to be discovered and migrated James Morse Orabug: 33921646 - arm64: Mitigate spectre...

CVE-2022-0516: Exposure of Sensitive Information to an Unauthorized Actor

A vulnerability was found in kvms390guestsidaop in the arch/s390/kvm/kvm-s390.c function in KVM for s390 in the Linux kernel. This flaw allows a local attacker with a normal user privilege to obtain unauthorized memory write access. This flaw affects Linux kernel versions prior to 5.17-rc4...

Security update for the Linux Kernel (important)

openSUSE Security Update: Security update for the Linux Kernel Announcement ID: openSUSE-SU-2022:0760-1 Rating: important References: 1089644 1154353 1157038 1157923 1176447 1176940 1178134 1181147 1181588 1183872 1187716 1188404 1189126 1190812 1190972 1191580 1191655 1191741 1192210 1192483...

Debian: Security Advisory (DSA-5092-1)

The remote host is missing an update for the Debian 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...

Security update for the Linux Kernel (important)

openSUSE Security Update: Security update for the Linux Kernel Announcement ID: openSUSE-SU-2022:0755-1 Rating: important References: 1089644 1154353 1156395 1157038 1157923 1176447 1176940 1178134 1181147 1181588 1183872 1187716 1188404 1189126 1190812 1190972 1191580 1191655 1191741 1192210...

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

An update for the virt:rhel and virt-devel:rhel modules is now available for Red Hat Enterprise Linux 8.4 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...

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...

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...

Input validation

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...

CVE-2021-3656

CVE-2021-3656 describes a flaw in the KVM hypervisor for AMD processors where the L1 guest can provide a VMCB with an improperly validated virt_ext field, allowing the L1 to disable VMLOAD/VMSAVE intercepts and VLS for the L2 guest. This enables the L2 guest to read/write portions of the host’s p...

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...

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...

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...

CVE-2021-3656: Missing Authorization

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...