DoS via non-preemptable L3/L4 pagetable freeing

ISSUE DESCRIPTION Guests have the ability to request removal of memory from themselves. This operation is intended to be requested for normal read/write pages, but is also permitted to be used on other types of pages. So far this in particular included pages pinned to their current type, with the...

Nexus 9 vs. Malicious Headphones, Take Two

Nexus 9 vs. Malicious Headphones, Take Two In March 2017 we disclosed CVE-2017-0510, a critical vulnerability in Nexus 9, that allowed for quite unique an attack by malicious headphones. Interestingly, its patch was insufficient. We had responsibly reported that finding CVE-2017-0648 to Google,...

FreeBSD : xen-kernel and xen-tools -- Long latency MMIO mapping operations are not preemptible (d40c66cb-27e4-11e5-a4a5-002590263bf5)

The Xen Project reports : The XENDOMCTLmemorymapping hypercall allows long running operations without implementing preemption. This hypercall is used by the device model as part of the emulation associated with configuration of PCI devices passed through to HVM guests and is therefore indirectly...

Long latency MMIO mapping operations are not preemptible

ISSUE DESCRIPTION The XENDOMCTLmemorymapping hypercall allows long running operations without implementing preemption. This hypercall is used by the device model as part of the emulation associated with configuration of PCI devices passed through to HVM guests and is therefore indirectly exposed ...

xen-kernel and xen-tools -- Long latency MMIO mapping operations are not preemptible

The Xen Project reports: The XENDOMCTLmemorymapping hypercall allows long running operations without implementing preemption. This hypercall is used by the device model as part of the emulation associated with configuration of PCI devices passed through to HVM guests and is therefore indirectly...

CVE-2014-5149

Certain MMU virtualization operations in Xen 4.2.x through 4.4.x, when using shadow pagetables, are not preemptible, which allows local HVM guest to cause a denial of service vcpu consumption by invoking these operations, which process every page assigned to a guest, a different vulnerability tha...

Oracle Linux 5 : kernel (ELSA-2009-0264)

The remote Oracle Linux 5 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2009-0264 advisory. - security introduce missing kfree Jiri Pirko 480597 480598 CVE-2009-0031 - net sctp: overflow with bad stream ID in FWD-TSN chunk Eugene Teo 478804...

CVE-2013-1918

Certain page table manipulation operations in Xen 4.1.x, 4.2.x, and earlier are not preemptible, which allows local PV kernels to cause a denial of service via vectors related to "deep page table traversal."...

kernel security update

2.6.18-128.1.1.0.1.el5 - NET Add entropy support to e1000 and bnx2 John Sobecki,Guru Anbalagane orabug 6045759 - MM shrink zone patch John Sobecki,Chris Mason orabug 6086839 - NET Add xen pv/bonding netconsole support Tina yang orabug 6993043 bz 7258 - nfs convert ENETUNREACH to ENOTCONN Guru...

Mandrake Linux Security Advisory : kernel (MDKSA-2006:151)

A number of vulnerabilities were discovered and corrected in the Linux 2.6 kernel : Prior to and including 2.6.16-rc2, when running on x8664 systems with preemption enabled, local users can cause a DoS oops via multiple ptrace tasks that perform single steps CVE-2006-1066. Prior to 2.6.16, a...

CVE-2006-1066

Linux kernel 2.6.16-rc2 and earlier, when running on x8664 systems with preemption enabled, allows local users to cause a denial of service oops via multiple ptrace tasks that perform single steps, which can cause corruption of the DEBUGSTACK stack during the dodebug function call...

CVE-2005-2019

ipfw in FreeBSD 5.4, when running on Symmetric Multi-Processor SMP or Uni Processor UP systems with the PREEMPTION kernel option enabled, does not sufficiently lock certain resources while performing table lookups, which can cause the cache results to be corrupted during multiple concurrent...

CVE-2005-2019

ipfw in FreeBSD 5.4, when running on Symmetric Multi-Processor SMP or Uni Processor UP systems with the PREEMPTION kernel option enabled, does not sufficiently lock certain resources while performing table lookups, which can cause the cache results to be corrupted during multiple concurrent...

CVE-2005-2019

CVE-2005-2019 affects FreeBSD 5.4+ ipfw when running on SMP or UP with PREEMPTION enabled. The issue is an insufficient lock around the tables lookup cache, so concurrent table lookups can corrupt cached results and cause some addresses to be matched incorrectly, potentially bypassing filtering r...