DEBIAN-CVE-2019-19581

An issue was discovered in Xen through 4.12.x allowing 32-bit Arm guest OS users to cause a denial of service out-of-bounds access because certain bit iteration is mishandled. In a number of places bitmaps are being used by the hypervisor to track certain state. Iteration over all bits involves...

CVE-2019-19581

An issue was discovered in Xen through 4.12.x allowing 32-bit Arm guest OS users to cause a denial of service out-of-bounds access because certain bit iteration is mishandled. In a number of places bitmaps are being used by the hypervisor to track certain state. Iteration over all bits involves...

CVE-2019-19581

An issue was discovered in Xen through 4.12.x allowing 32-bit Arm guest OS users to cause a denial of service out-of-bounds access because certain bit iteration is mishandled. In a number of places bitmaps are being used by the hypervisor to track certain state. Iteration over all bits involves...

Out-of-bounds

An issue was discovered in Xen through 4.12.x allowing 32-bit Arm guest OS users to cause a denial of service out-of-bounds access because certain bit iteration is mishandled. In a number of places bitmaps are being used by the hypervisor to track certain state. Iteration over all bits involves...

UBUNTU-CVE-2019-19581

An issue was discovered in Xen through 4.12.x allowing 32-bit Arm guest OS users to cause a denial of service out-of-bounds access because certain bit iteration is mishandled. In a number of places bitmaps are being used by the hypervisor to track certain state. Iteration over all bits involves...

Race condition

An issue was discovered in Xen through 4.12.x allowing x86 PV guest OS users to gain host OS privileges by leveraging race conditions in pagetable promotion and demotion operations, because of an incomplete fix for CVE-2019-18421. XSA-299 addressed several critical issues in restartable PV type...

CVE-2019-19581

An issue was discovered in Xen through 4.12.x allowing 32-bit Arm guest OS users to cause a denial of service out-of-bounds access because certain bit iteration is mishandled. In a number of places bitmaps are being used by the hypervisor to track certain state. Iteration over all bits involves...

CVE-2019-19581

An issue was discovered in Xen through 4.12.x allowing 32-bit Arm guest OS users to cause a denial of service out-of-bounds access because certain bit iteration is mishandled. In a number of places bitmaps are being used by the hypervisor to track certain state. Iteration over all bits involves...

CVE-2019-19581

CVE-2019-19581 affects the Xen hypervisor (notably up to 4.12.x) and is described in connected advisories as a find_next_bit() issue causing an out-of-bounds access in 32-bit ARM bitmaps when the bit count is a multiple of 32. This can lead to a hypervisor crash or denial of service. 32-bit ARM s...

CVE-2019-19583

An issue was discovered in Xen through 4.12.x allowing x86 HVM/PVH guest OS users to cause a denial of service guest OS crash because VMX VMEntry checks mishandle a certain case. Please see XSA-260 for background on the MovSS shadow. Please see XSA-156 for background on the need for DB...

Further issues with restartable PV type change operations

ISSUE DESCRIPTION XSA-299 addressed several critical issues in restartable PV type change operations. Despite extensive testing and auditing, some corner cases were missed. IMPACT A malicious PV guest administrator may be able to escalate their privilege to that of the host. VULNERABLE SYSTEMS Al...

Linear pagetable use / entry miscounts

ISSUE DESCRIPTION "Linear pagetables" is a technique which involves either pointing a pagetable at itself, or to another pagetable of the same or higher level. Xen has limited support for linear pagetables: A page may either point to itself, or point to another pagetable of the same level i.e., L...

find_next_bit() issues

ISSUE DESCRIPTION In a number of places bitmaps are being used by the hypervisor to track certain state. Iteration over all bits involves functions which may misbehave in certain corner cases: - On 32-bit Arm accesses to bitmaps with bit a count which is a multiple of 32, an out of bounds access...

EulerOS Virtualization for ARM 64 3.0.3.0 : qemu-kvm (EulerOS-SA-2019-2352)

According to the versions of the qemu-kvm packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities : - In QEMU 3.0.0, tcpemu in slirp/tcpsubr.c has a heap-based buffer overflow.CVE-2019-6778 - A flaw was found in QEMU's...

EulerOS Virtualization for ARM 64 3.0.3.0 : libsndfile (EulerOS-SA-2019-2351)

According to the versions of the libsndfile package installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities : - Heap-based Buffer Overflow in the psfbinheaderwritef function in common.c in libsndfile through 1.0.28 allows remot...

EulerOS Virtualization for ARM 64 3.0.3.0 : lua (EulerOS-SA-2019-2339)

According to the version of the lua packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerability : - Lua 5.3.5 has a use-after-free in luaupvaluejoin in lapi.c. For example, a crash outcome might be achieved by an attacker wh...

EulerOS Virtualization for ARM 64 3.0.3.0 : icu (EulerOS-SA-2019-2312)

According to the version of the icu package installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerability : - The ucnvUTF8FromUTF8 function in ucnvu8.cpp in International Components for Unicode ICU for C/C++ through 60.1 mishandles...

EulerOS Virtualization for ARM 64 3.0.3.0 : lcms2 (EulerOS-SA-2019-2342)

According to the version of the lcms2 package installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerability : - Little CMS aka Little Color Management System 2.9 has an integer overflow in the AllocateDataSet function in cmscgats.c,...

EulerOS Virtualization for ARM 64 3.0.3.0 : cups (EulerOS-SA-2019-2346)

According to the versions of the cups package installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities : - The addjob function in scheduler/ipp.c in CUPS before 2.2.6, when D-Bus support is enabled, can be crashed by remote...

EulerOS Virtualization for ARM 64 3.0.3.0 : perl (EulerOS-SA-2019-2326)

According to the versions of the perl packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities : - An issue was discovered in Perl 5.18 through 5.26. A crafted regular expression can cause a heap-based buffer overflow,...