Design/Logic Flaw

A flaw was found in the way KVM hypervisor handled x2APIC Machine Specific Rregister MSR access with nested=1 virtualization enabled. In that, L1 guest could access L0's APIC register values via L2 guest, when 'virtualize x2APIC mode' is enabled. A guest could use this flaw to potentially crash t...

CVE-2019-3887

CVE-2019-3887 covers a KVM x2APIC MSR access flaw that can allow a L1 guest to read L0 APIC values via a L2 guest when nested virtualization is enabled, potentially crashing the host kernel (DoS). Affected: Linux kernel with nested=1 supporting x2APIC mode; cited in multiple Unity Linux/Nessus ad...

CVE-2019-3887: Incorrect Authorization

A flaw was found in the way KVM hypervisor handled x2APIC Machine Specific Rregister MSR access with nested=1 virtualization enabled. In that, L1 guest could access L0's APIC register values via L2 guest, when 'virtualize x2APIC mode' is enabled. A guest could use this flaw to potentially crash t...

CVE-2019-3887

A flaw was found in the way KVM hypervisor handled x2APIC Machine Specific Rregister MSR access with nested=1 virtualization enabled. In that, L1 guest could access L0's APIC register values via L2 guest, when 'virtualize x2APIC mode' is enabled. A guest could use this flaw to potentially crash t...

SUSE-SU-2019:0901-1 Security update for the Linux Kernel

The SUSE Linux Enterprise 12 SP3 Azure kernel was updated to 4.4.176 to receive various security and bugfixes. The following security bugs were fixed: - CVE-2019-2024: A use-after-free when disconnecting a source was fixed which could lead to crashes. bnc1129179. - CVE-2019-9213: expanddownwards ...

PT-2019-2980

Name of the Vulnerable Software and Affected Versions Linux Kernel versions 4.16 and newer Description The issue is related to a flaw in the KVM hypervisor's handling of x2APIC Machine Specific Register MSR access with nested virtualization enabled, allowing a guest to potentially access the host...

EulerOS Virtualization 2.5.3 : kvm (EulerOS-SA-2019-1255)

According to the version of the kvm package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerability : - A use-after-free vulnerability was found in the way the Linux kernel's KVM hypervisor implements its device control API. While creating ...

SUSE-SU-2019:0784-1 Security update for the Linux Kernel

The SUSE Linux Enterprise 15 kernel was updated to receive various security and bugfixes. The following security bugs were fixed: - CVE-2019-2024: A use-after-free when disconnecting a source was fixed which could lead to crashes. bnc1129179. - CVE-2019-9213: expanddownwards in mm/mmap.c lacks a...

SUSE-SU-2019:0767-1 Security update for the Linux Kernel

The SUSE Linux Enterprise Server 12 SP4 Azure kernel was updated to fix various issues. The following security bugs were fixed: - CVE-2019-2024: A use-after-free when disconnecting a source was fixed which could lead to crashes. bnc1129179. - CVE-2019-9213: expanddownwards in mm/mmap.c lacked a...

SUSE-SU-2019:0740-1 Security update for the Linux Kernel (Live Patch 1 for SLE 15)

This update for the Linux Kernel 4.12.14-253 fixes several issues. The following security issues were fixed: - CVE-2019-9213: Expanddownwards in mm/mmap.c lacked a check for the mmap minimum address, which made it easier for attackers to exploit kernel NULL pointer dereferences on non-SMAP...

SUSE SLES12 Security Update : kernel (SUSE-SU-2019:0722-1)

This update for the Linux Kernel 4.4.121-9295 fixes several issues. The following security issues were fixed : CVE-2019-9213: Expanddownwards in mm/mmap.c lacked a check for the mmap minimum address, which made it easier for attackers to exploit kernel NULL pointer dereferences on non-SMAP...

SUSE SLES12 Security Update : kernel (SUSE-SU-2019:0709-1)

This update for the Linux Kernel 4.4.121-9298 fixes several issues. The following security issues were fixed : CVE-2019-9213: Expanddownwards in mm/mmap.c lacked a check for the mmap minimum address, which made it easier for attackers to exploit kernel NULL pointer dereferences on non-SMAP...

SUSE-SU-2019:0709-1 Security update for the Linux Kernel (Live Patch 24 for SLE 12 SP2)

This update for the Linux Kernel 4.4.121-9292 fixes several issues. The following security issues were fixed: - CVE-2019-9213: Expanddownwards in mm/mmap.c lacked a check for the mmap minimum address, which made it easier for attackers to exploit kernel NULL pointer dereferences on non-SMAP...

Amazon Linux 2 : kernel (ALAS-2019-1165)

A use-after-free vulnerability was found in the way the Linux kernel's KVM hypervisor implements its device control API. While creating a device via kvmioctlcreatedevice, the device holds a reference to a VM object, later this reference is transferred to the caller's file descriptor table. If suc...

Important: kernel

Issue Overview: A use-after-free vulnerability was found in the way the Linux kernel's KVM hypervisor implements its device control API. While creating a device via kvmioctlcreatedevice, the device holds a reference to a VM object, later this reference is transferred to the caller's file descript...

Amazon Linux AMI : kernel (ALAS-2019-1165)

A use-after-free vulnerability was found in the way the Linux kernel's KVM hypervisor emulates a preemption timer for L2 guests when nested =1 virtualization is enabled. This high resolution timerhrtimer runs when a L2 guest is active. After VM exit, the syncvmcs12 timer object is stopped. The...

openSUSE Security Update : the Linux Kernel (openSUSE-2019-274)

The openSUSE Leap 42.3 kernel was updated to 4.4.175 to receive various bugfixes. The following security bugs were fixed : - CVE-2018-5391: Fixed a vulnerability, which allowed an attacker to cause a denial of service attack with low rates of packets targeting IP fragment re-assembly. bsc1103097 ...

Security update for the Linux Kernel (important)

openSUSE Security Update: Security update for the Linux Kernel Announcement ID: openSUSE-SU-2019:0274-1 Rating: important References: 1012382 1020413 1031492 1042286 1050549 1078355 1086095 1086652 1099810 1103097 1105428 1106061 1106929 1116345 1117108 1117645 1117744 1120017 1120758 1120902...

Important: kernel

Issue Overview: A use-after-free vulnerability was found in the way the Linux kernel's KVM hypervisor emulates a preemption timer for L2 guests when nested =1 virtualization is enabled. This high resolution timerhrtimer runs when a L2 guest is active. After VM exit, the syncvmcs12 timer object is...

MGASA-2019-0098 Updated kernel-linus packages fix security vulnerabilities

This kernel-linus update is based on the upstream 4.14.100 and fixes at least the following security issues: Cross-hyperthread Spectre v2 mitigation is now provided by the Single Thread Indirect Branch Predictors STIBP support. Note that STIBP also requires the functionality be supported by the...