CVE-2018-10901

A flaw was found in Linux kernel's KVM virtualization subsystem. The VMX code does not restore the GDT.LIMIT to the previous host value, but instead sets it to 64KB. With a corrupted GDT limit a host's userspace code has an ability to place malicious entries in the GDT, particularly to the per-cp...

PT-2018-2205 · Linux +2 · Linux Kernel +2

Name of the Vulnerable Software and Affected Versions: Linux kernel's KVM virtualization subsystem affected versions not specified Description: A flaw in the Linux kernel's KVM virtualization subsystem is related to inadequate access control. The issue is caused by the VMX code not restoring the...

Kernel update: Virtuozzo ReadyKernel patch 48.0 for Virtuozzo 7.0.7

The cumulative Virtuozzo ReadyKernel patch was updated with stability fixes. The patch applies to the Virtuozzo 7.0 kernel 3.10.0-693.17.1.vz7.43.10 7.0.7. Vulnerability id: PSBM-79229 If a container used its own network namespace for tun devices, suspend/resume and live migration of said contain...

SUSE SLED12 / SLES12 Security Update : xen (SUSE-SU-2017:2864-1)

This update for xen fixes several issues: These security issues were fixed : - CVE-2017-5526: The ES1370 audio device emulation support was vulnerable to a memory leakage issue allowing a privileged user inside the guest to cause a DoS and/or potentially crash the Qemu process on the host...

SUSE-SU-2017:2873-1 Security update for xen

This update for xen fixes several issues: These security issues were fixed: - CVE-2017-5526: The ES1370 audio device emulation support was vulnerable to a memory leakage issue allowing a privileged user inside the guest to cause a DoS and/or potentially crash the Qemu process on the host bsc10597...

Xen Hypervisor New CPU Interrupt Descriptor Table (IDT) Copy Handling Guest-to-Host Privilege Escalation (XSA-244)

According to its self-reported version number, the Xen hypervisor installed on the remote host is affected by an unspecified flaw that is triggered when, as a new CPU is brought online, it copies certain selector fields from CPU0's Interrupt Descriptor Table IDT while CPU0 is in HVM context. This...

ALPINE-CVE-2017-15594

An issue was discovered in Xen through 4.9.x allowing x86 SVM PV guest OS users to cause a denial of service hypervisor crash or gain privileges because IDT settings are mishandled during CPU hotplugging...

FreeBSD Kernel amd64_set_ldt Heap Overflow Vulnerability

FreeBSD is a UNIX operating system. An integer signature error in the amd64setldt function in the kernel code of versions prior to FreeBSD 10.2-RELENG can lead to a kernel heap overflow, which can cause a system crash in a local attacker...

kernel: x86: espfix(64) bypass via set_thread_area and CLONE_SETTLS

It was found that the espfix functionality could be bypassed by installing a 16-bit RW data segment into GDT instead of LDT which espfix checks, and using that segment on the stack. A local, unprivileged user could potentially use this flaw to leak kernel stack addresses...

libvirt / qemu security vulnerabilities

Crash on PCI registers, IDE controller and Physical Region Descriptor Table decoder. Code execution...

Linux Kernel 3.17.5 - IRET Instruction #SS Fault Handling Crash (PoC)

Linux Kernel 3.17.5 - IRET Instruction SS Fault Handling Crash PoC / ---------------------------------------------------------------------------------------------------- cve-2014-9322poc.c arch/x86/kernel/entry64.S in the Linux kernel before 3.17.5 does not properly handle faults associated with...

UBUNTU-CVE-2014-9090

The dodoublefault function in arch/x86/kernel/traps.c in the Linux kernel through 3.17.4 does not properly handle faults associated with the Stack Segment SS segment register, which allows local users to cause a denial of service panic via a modifyldt system call, as demonstrated by sigreturn32 i...

CVE-2014-4403

The kernel in Apple OS X before 10.9.5 allows local users to obtain sensitive address information and bypass the ASLR protection mechanism by leveraging predictability of the location of the CPU Global Descriptor Table...

Design/Logic Flaw

Monkey HTTP Server before 1.5.3, when the File Descriptor Table FDT is enabled and custom error messages are set, allows remote attackers to cause a denial of service file descriptor consumption via an HTTP request that triggers an error message...

ESTsoft ALYac Anti-Virus 1.5 <= 5.0.1.2 - Privilege Escalation Vulnerability

No description provided by source. ESTsoft ALYac Anti-Virus 1.5 with AYDrvNT.sys = 5.0.1.2 Local Kernel Mode Privilege Escalation Vulnerability AUTHOR MJ0011 EMAIL thdecoder$126.com VULNERABLE PRODUCTS ALYac Anti-Virus 1.5 DETAILS: AYDrvNT.sys create a device called AYDrvNTALYAC , and handles the...

Microsoft Windows 2000/NT 4 Local Descriptor Table Local Privilege Escalation Vulnerability

No description provided by source. source: http://www.securityfocus.com/bid/10122/info Microsoft Windows Local Descriptor Table programming interface is prone to a privilege-escalation vulnerability. A local attacker may be able to create a malicious entry in the Local Descriptor Table. This entr...

ESTsoft ALYac Anti-Virus 1.5 <= 5.0.1.2 Privilege Escalation Vulnerability

Exploit for windows platform in category local exploits ESTsoft ALYac Anti-Virus 1.5 with AYDrvNT.sys = 5.0.1.2 Local Kernel Mode Privilege Escalation Vulnerability AUTHOR MJ0011 EMAIL thdecoder$126.com VULNERABLE PRODUCTS ALYac Anti-Virus 1.5 DETAILS: AYDrvNT.sys create a device called...

ESTsoft ALYac Anti-Virus 1.5 < 5.0.1.2 - Local Privilege Escalation

ESTsoft ALYac Anti-Virus 1.5 with AYDrvNT.sys = 5.0.1.2 Local Kernel Mode Privilege Escalation Vulnerability AUTHOR MJ0011 EMAIL thdecoder$126.com VULNERABLE PRODUCTS ALYac Anti-Virus 1.5 DETAILS: AYDrvNT.sys create a device called "AYDrvNTALYAC" , and handles the device io control code = 0x223e2...

kvm: invalid selector in fs/gs causes kernel panic

The KVM implementation in the Linux kernel before 2.6.36 does not properly reload the FS and GS segment registers, which allows host OS users to cause a denial of service host OS crash via a KVMRUN ioctl call in conjunction with a modified Local Descriptor Table LDT...

kvm: invalid selector in fs/gs causes kernel panic

The KVM implementation in the Linux kernel before 2.6.36 does not properly reload the FS and GS segment registers, which allows host OS users to cause a denial of service host OS crash via a KVMRUN ioctl call in conjunction with a modified Local Descriptor Table LDT...