domctl lock open to abuse

ISSUE DESCRIPTION To create and manage guests, domctl operations are used by the control domain, a possible Xenstore domain, or by a domain controlling a particular guest. Some of these operations may not be executed in parallel, so a system-wide lock is used. The way that lock is acquired is,...

PT-2026-48241

Name of the Vulnerable Software and Affected Versions Xen affected versions not specified Description HVM guest I/O port accesses require either emulation or translation. These translations are managed by the device model through 'XEN DOMCTL ioport mapping'. The linked list used for these...

PT-2026-48244

This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE. To create and manage guests, domctl operations are used by the control domain, a possible Xenstore domain, or by a domain controlling a particular guest. Some of these...

PT-2026-48242

Name of the Vulnerable Software and Affected Versions The product name cannot be determined affected versions not specified Description Certain shadow paging error paths switch page-tables without updating the currently running vCPU reference. This creates a mismatch between the loaded page-table...

Xen Denial of Service Vulnerability (CNVD-2020-53815)

Xen is an open source virtual machine monitor product from the University of Cambridge, UK. The product enables different and incompatible operating systems to run on the same computer and supports runtime migration to ensure uptime and avoid downtime. A security vulnerability exists in Xen versi...

DEBIAN-CVE-2015-7969

Multiple memory leaks in Xen 4.0 through 4.6.x allow local guest administrators or domains with certain permission to cause a denial of service memory consumption via a large number of "teardowns" of domains with the vcpu pointer array allocated using the 1 XENDOMCTLmaxvcpus hypercall or the...

SUSE-SU-2015:1479-1 Security update for xen

xen was updated to fix the following security issues: CVE-2015-5165: QEMU leak of uninitialized heap memory in rtl8139 device model bsc939712, XSA-140 CVE-2015-5166: Use after free in QEMU/Xen block unplug protocol bsc939709, XSA-139 CVE-2015-2751: Certain domctl operations could have be used to...

FreeBSD : xen-kernel -- Certain domctl operations may be abused to lock up the host (103a47d5-27e7-11e5-a4a5-002590263bf5)

The Xen Project reports : XSA-77 put the majority of the domctl operations on a list excepting them from having security advisories issued for them if any effects their use might have could hamper security. Subsequently some of them got declared disaggregation safe, but for a small subset this wa...

SUSE SLED12 / SLES12 Security Update : xen (SUSE-SU-2015:0701-1)

Xen was updated 4.4.201 to address three security issues and functional bugs. The following vulnerabilities were fixed : - Long latency MMIO mapping operations are not preemptible XSA-125, CVE-2015-2752, bnc922705 - Unmediated PCI command register access in qemu XSA-126, CVE-2015-2756, bnc922706 ...

Xen 'arch_do_domctl()' Information Disclosure Vulnerability

Xen is a virtualization technology for the Linux kernel that allows multiple operating systems to run simultaneously. An information disclosure vulnerability exists in the 'archdodomctl' function when Xen handles the XENDOMCTLgettscinfo operation, which could be exploited by a local attacker to...

Fedora 22 : xen-4.5.0-7.fc22 (2015-5295)

Long latency MMIO mapping operations are not preemptible XSA-125, CVE-2015-2752 Unmediated PCI command register access in qemu XSA-126, CVE-2015-2756 Certain domctl operations may be abused to lock up the host XSA-127, CVE-2015-2751 Note that Tenable Network Security has extracted the preceding...

Fedora 21 : xen-4.4.2-2.fc21 (2015-5208)

Long latency MMIO mapping operations are not preemptible XSA-125, CVE-2015-2752 Unmediated PCI command register access in qemu XSA-126, CVE-2015-2756 Certain domctl operations may be abused to lock up the host XSA-127, CVE-2015-2751 update to xen-4.4.2 Note that Tenable Network Security has...

Fedora 20 : xen-4.3.4-2.fc20 (2015-5402)

Long latency MMIO mapping operations are not preemptible XSA-125, CVE-2015-2752 Unmediated PCI command register access in qemu XSA-126, CVE-2015-2756 Certain domctl operations may be abused to lock up the host XSA-127, CVE-2015-2751 update to xen-4.3.4 Note that Tenable Network Security has...

UBUNTU-CVE-2015-2751

Xen 4.3.x, 4.4.x, and 4.5.x, when using toolstack disaggregation, allows remote domains with partial management control to cause a denial of service host lock via unspecified domctl operations...

CVE-2015-2751

Xen 4.3.x, 4.4.x, and 4.5.x, when using toolstack disaggregation, allows remote domains with partial management control to cause a denial of service host lock via unspecified domctl operations...

CVE-2015-2751

Xen 4.3.x, 4.4.x, and 4.5.x, when using toolstack disaggregation, allows remote domains with partial management control to cause a denial of service host lock via unspecified domctl operations...

Certain domctl operations may be abused to lock up the host

ISSUE DESCRIPTION XSA-77 put the majority of the domctl operations on a list excepting them from having security advisories issued for them if any effects their use might have could hamper security. Subsequently some of them got declared disaggregation safe, but for a small subset this was not...

xen-kernel -- Certain domctl operations may be abused to lock up the host

The Xen Project reports: XSA-77 put the majority of the domctl operations on a list excepting them from having security advisories issued for them if any effects their use might have could hamper security. Subsequently some of them got declared disaggregation safe, but for a small subset this was...