openSUSE: Security Advisory for xen (openSUSE-SU-2018:1487-1)

The remote host is missing an update for the Copyright C 2018 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...

Fedora 26 : xen (2018-7cd077ddd3)

x86: mishandling of debug exceptions XSA-260, CVE-2018-8897 x86 vHPET interrupt injection errors XSA-261, CVE-2018-10982 1576089 qemu may drive Xen into unbounded loop XSA-262, CVE-2018-10981 1576680 Note that Tenable Network Security has extracted the preceding description block directly from th...

Kernel: error in exception handling leads to DoS

A flaw was found in the way the Linux kernel handled exceptions delivered after a stack switch operation via Mov SS or Pop SS instructions. During the stack switch operation, the processor did not deliver interrupts and exceptions, rather they are delivered once the first instruction after the...

What we’ve got here is failure to communicate: OS vendors misread CPU docs, create flaw

In a memorable scene from “Jumpin’ Jack Flash,” Whoopi Goldberg struggles to understand the lyrics of the eponymous song from the Rolling Stones, as she pleads: “Mick, Mick, Mick, speak English!” It appears that multiple operating system vendors had similar trouble interpreting Intel and AMD...

CVE-2018-10982

An issue was discovered in Xen through 4.10.x allowing x86 HVM guest OS users to cause a denial of service unexpectedly high interrupt number, array overrun, and hypervisor crash or possibly gain hypervisor privileges by setting up an HPET timer to deliver interrupts in IO-APIC mode, aka vHPET...

UBUNTU-CVE-2018-10982

An issue was discovered in Xen through 4.10.x allowing x86 HVM guest OS users to cause a denial of service unexpectedly high interrupt number, array overrun, and hypervisor crash or possibly gain hypervisor privileges by setting up an HPET timer to deliver interrupts in IO-APIC mode, aka vHPET...

ALPINE-CVE-2018-10982

An issue was discovered in Xen through 4.10.x allowing x86 HVM guest OS users to cause a denial of service unexpectedly high interrupt number, array overrun, and hypervisor crash or possibly gain hypervisor privileges by setting up an HPET timer to deliver interrupts in IO-APIC mode, aka vHPET...

DEBIAN-CVE-2018-10982

An issue was discovered in Xen through 4.10.x allowing x86 HVM guest OS users to cause a denial of service unexpectedly high interrupt number, array overrun, and hypervisor crash or possibly gain hypervisor privileges by setting up an HPET timer to deliver interrupts in IO-APIC mode, aka vHPET...

CVE-2018-10982

An issue was discovered in Xen through 4.10.x allowing x86 HVM guest OS users to cause a denial of service unexpectedly high interrupt number, array overrun, and hypervisor crash or possibly gain hypervisor privileges by setting up an HPET timer to deliver interrupts in IO-APIC mode, aka vHPET...

CVE-2018-10982

CVE-2018-10982 affects the Xen hypervisor (through 4.10.x) where x86 HVM guests can cause a denial of service or potentially gain hypervisor privileges by setting up an HPET timer to deliver interrupts in IO-APIC mode (vHPET interrupt injection). Affected component: Xen hypervisor (x86 HVM path) ...

Major OS Players Misinterpret Intel Docs, and Now Kernels Can Be Hijacked

Multiple operating system vendors issued coordinated patches this week to address a common vulnerability across their platforms, which was introduced thanks to widespread misinterpretation of Intel developer documentation. According to the CERT/CC team, most major players including Apple, FreeBSD...

Microsoft Windows Multiple Vulnerabilities (KB4103731)

This host is missing a critical security update according to Microsoft KB4103731 SPDX-FileCopyrightText: 2018 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...

Kernel: error in exception handling leads to DoS

A flaw was found in the way the Linux kernel handled exceptions delivered after a stack switch operation via Mov SS or Pop SS instructions. During the stack switch operation, the processor did not deliver interrupts and exceptions, rather they are delivered once the first instruction after the...

Kernel: error in exception handling leads to DoS

A flaw was found in the way the Linux kernel handled exceptions delivered after a stack switch operation via Mov SS or Pop SS instructions. During the stack switch operation, the processor did not deliver interrupts and exceptions, rather they are delivered once the first instruction after the...

Kernel: error in exception handling leads to DoS

A flaw was found in the way the Linux kernel handled exceptions delivered after a stack switch operation via Mov SS or Pop SS instructions. During the stack switch operation, the processor did not deliver interrupts and exceptions, rather they are delivered once the first instruction after the...

Kernel: error in exception handling leads to DoS

A flaw was found in the way the Linux kernel handled exceptions delivered after a stack switch operation via Mov SS or Pop SS instructions. During the stack switch operation, the processor did not deliver interrupts and exceptions, rather they are delivered once the first instruction after the...

SUSE-SU-2018:1171-1 Security update for the Linux Kernel

The SUSE Linux Enterprise 11 SP4 kernel was updated to receive various security and bugfixes. The following security bugs were fixed: - CVE-2018-1087: And an unprivileged KVM guest user could use this flaw to potentially escalate their privileges inside a guest. bsc1087088 - CVE-2018-8897: An...

x86 vHPET interrupt injection errors

ISSUE DESCRIPTION The High Precision Event Timer HPET can be configured to deliver interrupts in one of three different modes - through legacy interrupts; through the IO-APIC; or optionally via a method similar to PCI MSI. The last mode is optional and not implemented by Xen. However, of the firs...

Linux RNG Flaws

Linux RNG flaws CVE-2018-1108 There are several issues in drivers/char/random.c, in particular related to the behavior of the /dev/urandom RNG during and shortly after boot. I'm sending this to [email protected] and Theodore Ts'o for now; it might make sense to also add Jason Donenfeld, since...

CVE-2018-10471

An OOB write issue was found in the way Xen hypervisor handled error in the Page Table Isolation PTI implementation, used to fix the Meltdown issue. It could occur while processing interrupt 'INT 0x80', when PV guest's vCPU has no handler for it. A malicious guest user/process could use this flaw...