PT-2015-6788 · Linux +5 · Linux Kernel +5

Name of the Vulnerable Software and Affected Versions: Linux kernel versions prior to 4.1.6 Description: The issue is related to the mishandling of IRET faults in processing NMIs that occurred during userspace execution on the x86 64 platform. This might allow local users to gain privileges by...

FreeBSD : xen-kernel -- vulnerability in the iret hypercall handler (8c31b288-27ec-11e5-a4a5-002590263bf5)

The Xen Project reports : A buggy loop in Xen's compatiret function iterates the wrong way around a 32-bit index. Any 32-bit PV guest kernel can trigger this vulnerability by attempting a hypercalliret with EFLAGS.VM set. Given the use of get/putuser, and that the virtual addresses in question ar...

Fedora 22 : xen-4.5.0-11.fc22 (2015-10001)

stubs-32.h is back, so revert to previous behaviour. Heap overflow in QEMU PCNET controller, allowing guest-host escape XSA-135, CVE-2015-3209. GNTTABOPswapgrantref operation misbehavior XSA-134, CVE-2015-4163. vulnerability in the iret hypercall handler XSA-136, CVE-2015-4164. Note that Tenable...

Fedora 20 : xen-4.3.4-6.fc20 (2015-9965)

Heap overflow in QEMU PCNET controller, allowing guest-host escape XSA-135, CVE-2015-3209 1230537 GNTTABOPswapgrantref operation misbehavior XSA-134, CVE-2015-4163 vulnerability in the iret hypercall handler XSA-136, CVE-2015-4164 Potential unintended writes to host MSI message data field via qem...

Security update for xen (important)

Xen was updated to fix eight vulnerabilities. The following vulnerabilities were fixed: CVE-2015-2751: Certain domctl operations may be abused to lock up the host XSA-127 boo922709 CVE-2015-4103: Potential unintended writes to host MSI message data field via qemu XSA-128 boo931625 CVE-2015-4104:...

[SECURITY] [DSA 3286-1] xen security update

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 - ------------------------------------------------------------------------- Debian Security Advisory DSA-3286-1 [email protected] https://www.debian.org/security/ Moritz Muehlenhoff June 13, 2015 https://www.debian.org/security/faq -...

Xen compat_iret() Denial of Service Vulnerability

Xen is a virtualization technology for the Linux kernel that allows multiple operating systems to run simultaneously. A security vulnerability exists in Xen that allows a local user on a 32-bit PV GUEST system to call the compatiret function to trigger a large number of page faults, causing the...

DEBIAN-CVE-2015-4164

The compatiret function in Xen 3.1 through 4.5 iterates the wrong way through a loop, which allows local 32-bit PV guest administrators to cause a denial of service large loop and system hang via a hypercalliret call with EFLAGS.VM set...

UBUNTU-CVE-2015-4164

The compatiret function in Xen 3.1 through 4.5 iterates the wrong way through a loop, which allows local 32-bit PV guest administrators to cause a denial of service large loop and system hang via a hypercalliret call with EFLAGS.VM set...

Debian DSA-3286-1 : xen - security update

Multiple security issues have been found in the Xen virtualisation solution : - CVE-2015-3209 Matt Tait discovered a flaw in the way QEMU's AMD PCnet Ethernet emulation handles multi-TMD packets with a length above 4096 bytes. A privileged guest user in a guest with an AMD PCNet ethernet card...

DSA-3286-1 xen - security update

Bulletin has no description...

Citrix XenServer Multiple Security Updates (CTX201145)

A number of security vulnerabilities have been identified in Citrix XenServer that may allow a malicious administrator of a guest VM to crash the host. These vulnerabilities affect all currently supported versions of Citrix XenServer up to and including Citrix XenServer 6.5 Service Pack 1...

xen-kernel -- vulnerability in the iret hypercall handler

The Xen Project reports: A buggy loop in Xen's compatiret function iterates the wrong way around a 32-bit index. Any 32-bit PV guest kernel can trigger this vulnerability by attempting a hypercalliret with EFLAGS.VM set. Given the use of get/putuser, and that the virtual addresses in question are...

Linux Kernel IRET Instruction #SS Fault Handling - Crash PoC

Exploit for linux platform in category dos / 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 the Stack Segment ...

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 the Stack Segment SS segment register, which allows local users to...

Updated kernel-linus packages fix security vulnerabilities

This kernel-linus update is based on upstream -longterm 3.14.32 and fixes the following security issues: The microcode on AMD 16h 00h through 0Fh processors does not properly handle the interaction between locked instructions and write-combined memory types, which allows local users to cause a...

Oracle Linux 5 / 6 : Unbreakable Enterprise kernel (ELSA-2014-3107)

The remote Oracle Linux 5 / 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2014-3107 advisory. - isofs: Fix unbounded recursion when processing relocated directories Jan Kara Orabug: 20224060 CVE-2014-5471 CVE-2014-5472 Tenable has extracted...

kernel: x86: local privesc due to bad_iret and paranoid entry incompatibility

A flaw was found in the way the Linux kernel handled GS segment register base switching when recovering from a SS stack segment fault on an erroneous return to user space. A local, unprivileged user could use this flaw to escalate their privileges on the system...

kernel: x86: local privesc due to bad_iret and paranoid entry incompatibility

A flaw was found in the way the Linux kernel handled GS segment register base switching when recovering from a SS stack segment fault on an erroneous return to user space. A local, unprivileged user could use this flaw to escalate their privileges on the system...

kernel: x86: local privesc due to bad_iret and paranoid entry incompatibility

A flaw was found in the way the Linux kernel handled GS segment register base switching when recovering from a SS stack segment fault on an erroneous return to user space. A local, unprivileged user could use this flaw to escalate their privileges on the system...