Important: Red Hat Security Advisory: kernel security update

An update for kernel is now available for Red Hat Enterprise Linux 7.2 Advanced 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...

CVE-2021-3653

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 "intctl" field, this issue could allow a malicious ...

CVE-2021-3653

The CVE-2021-3653 issue affects the KVM hypervisor AMD code dealing with SVM nested virtualization. The root cause is improper validation of the int_ctl field in the VMCB provided by an L1 guest, which could allow a malicious L1 to enable AVIC for an L2 guest. Consequences stated across connected...

SUSE SLES12 Security Update : kernel (Live Patch 36 for SLE 12 SP3) (SUSE-SU-2021:3196-1)

The remote SUSE Linux SLES12 / SLESSAP12 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:3196-1 advisory. This update for the Linux Kernel 4.4.180-94135 fixes several issues. The following security issues were fixed: - CVE-2021-3653: Fix...

SUSE SLES12: kernel-azure / kernel-azure-base / kernel-azure-devel / etc (SUSE-SU-2021:3192-1)

The remote SUSE Linux SLES12 / SLESSAP12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:3192-1 advisory. The SUSE Linux Enterprise 12 SP5 Azure kernel was updated to receive various security and bugfixes. The following security bugs wer...

openSUSE 15 Security Update : kernel (openSUSE-SU-2021:3179-1)

The remote SUSE Linux SUSE15 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2021:3179-1 advisory. - An issue was discovered in the Linux kernel through 5.6.11. sgwrite lacks an sgremoverequest call in a certain failure case, aka...

SUSE SLES15: kernel-azure / kernel-azure-devel / kernel-devel-azure / etc (SUSE-SU-2021:3179-1)

The remote SUSE Linux SLES15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:3179-1 advisory. The SUSE Linux Enterprise 15 SP3 Azure kernel was updated to receive various security and bugfixes. The following security bugs were fixed: -...

Unbreakable Enterprise kernel security update

4.14.35-2047.507.7.4 - KVM: x86: Check kvmrebooting in kvmspuriousfault Sean Christopherson Orabug: 33362693 4.14.35-2047.507.7.3 - arm64: Reserve elfcorehdr before scanning reserved memory from device tree Dave Kleikamp Orabug: 33354710 4.14.35-2047.507.7.2 - net: geneve: modify IP header check ...

Ubuntu 16.04 ESM / 18.04 LTS : Linux kernel (GCP) vulnerabilities (USN-5073-2)

The remote Ubuntu 16.04 ESM / 18.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-5073-2 advisory. Maxim Levitsky and Paolo Bonzini discovered that the KVM hypervisor implementation for AMD processors in the Linux kernel allowed a guest VM ...

SUSE SLES12: kernel-livepatch-4_12_14-150_58-default / etc (SUSE-SU-2021:3073-1)

The remote SUSE Linux SLES12 / SLES15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:3073-1 advisory. This update for the Linux Kernel 4.12.14-12237 fixes several issues. The following security issues were fixed: - CVE-2021-3653: Fixed...

Oracle Linux 7 / 8 : Unbreakable Enterprise kernel (ELSA-2021-9450)

The remote Oracle Linux 7 / 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-9450 advisory. 5.4.17-2102.205.7.2 - btrfs: fix race between marking inode needs to be logged and log syncing Filipe Manana Orabug: 33349276 5.4.17-2102.205.7.1 -...

Oracle Linux 7 / 8 : Unbreakable Enterprise kernel-container (ELSA-2021-9451)

The remote Oracle Linux 7 / 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-9451 advisory. - KVM: nSVM: avoid picking up unsupported bits from L2 in intctl CVE-2021-3653 Maxim Levitsky Orabug: 33226010 CVE-2021-3653 - Revert KVM: nSVM:...

Amazon Linux 2 : kernel (ALAS-2021-1704)

The version of kernel installed on the remote host is prior to 4.14.246-187.474. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2021-1704 advisory. A flaw was found in the KVM's AMD code for supporting SVM nested virtualization. The flaw occurs when processing t...

RLSA-2021:3548 Moderate: kernel security, bug fix, and enhancement update

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: SVM nested virtualization issue in KVM AVIC support CVE-2021-3653 For more details about the security issues, including the impact, a CVSS score, acknowledgments, and other related...

Moderate: kernel security, bug fix, and enhancement update

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: SVM nested virtualization issue in KVM AVIC support CVE-2021-3653 For more details about the security issues, including the impact, a CVSS score, acknowledgments, and other related...

RHEL 8 : kernel (RHSA-2021:3548)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2021:3548 advisory. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: SVM nested virtualization issue in KVM...

CentOS 8 : kernel (CESA-2021:3548)

The remote CentOS Linux 8 host has packages installed that are affected by a vulnerability as referenced in the CESA-2021:3548 advisory. - kernel: SVM nested virtualization issue in KVM AVIC support CVE-2021-3653 Note that Nessus has not tested for this issue but has instead relied only on the...

Medium: kernel

Issue Overview: 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 "intctl" field, this issue could...

RHEL 8 : kernel-rt (RHSA-2021:3547)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2021:3547 advisory. The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Securi...

Ubuntu 20.04 LTS : Linux kernel vulnerabilities (USN-5072-1)

The remote Ubuntu 20.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-5072-1 advisory. Maxim Levitsky and Paolo Bonzini discovered that the KVM hypervisor implementation for AMD processors in the Linux kernel allowed a guest VM to disable...