CVE-2021-26932

An issue was discovered in the Linux kernel 3.2 through 5.10.16, as used by Xen. Grant mapping operations often occur in batch hypercalls, where a number of operations are done in a single hypercall, the success or failure of each one is reported to the backend driver, and the backend driver then...

Design/Logic Flaw

An issue was discovered in the Linux kernel 3.2 through 5.10.16, as used by Xen. Grant mapping operations often occur in batch hypercalls, where a number of operations are done in a single hypercall, the success or failure of each one is reported to the backend driver, and the backend driver then...

CVE-2021-26932

An issue was discovered in the Linux kernel 3.2 through 5.10.16, as used by Xen. Grant mapping operations often occur in batch hypercalls, where a number of operations are done in a single hypercall, the success or failure of each one is reported to the backend driver, and the backend driver then...

Fedora 32 : xen (2021-16c9c40d4d)

The remote Fedora 32 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2021-16c9c40d4d advisory. - An issue was discovered in Xen 4.12.3 through 4.12.4 and 4.13.1 through 4.14.x. An x86 HVM guest with PCI pass through devices can force the...

ALPINE-CVE-2021-3308

An issue was discovered in Xen 4.12.3 through 4.12.4 and 4.13.1 through 4.14.x. An x86 HVM guest with PCI pass through devices can force the allocation of all IDT vectors on the system by rebooting itself with MSI or MSI-X capabilities enabled and entries setup. Such reboots will leak any vectors...

CVE-2021-3308

An issue was discovered in Xen 4.12.3 through 4.12.4 and 4.13.1 through 4.14.x. An x86 HVM guest with PCI pass through devices can force the allocation of all IDT vectors on the system by rebooting itself with MSI or MSI-X capabilities enabled and entries setup. Such reboots will leak any vectors...

CVE-2021-3308

An issue was discovered in Xen 4.12.3 through 4.12.4 and 4.13.1 through 4.14.x. An x86 HVM guest with PCI pass through devices can force the allocation of all IDT vectors on the system by rebooting itself with MSI or MSI-X capabilities enabled and entries setup. Such reboots will leak any vectors...

CVE-2021-3308

An issue was discovered in Xen 4.12.3 through 4.12.4 and 4.13.1 through 4.14.x. An x86 HVM guest with PCI pass through devices can force the allocation of all IDT vectors on the system by rebooting itself with MSI or MSI-X capabilities enabled and entries setup. Such reboots will leak any vectors...

CVE-2021-3308

CVE-2021-3308 affects the Xen hypervisor (notably Xen 4.12.3–4.12.4 and 4.13.1–4.14.x). An x86 HVM guest with PCI passthrough can reboot with MSI/MSI-X enabled to exhaust all IDT vectors, leaking MSI(-X) entries and causing a DoS for PCI devices across guests or the host. The issue is triggered b...

CVE-2021-3308

An issue was discovered in Xen 4.12.3 through 4.12.4 and 4.13.1 through 4.14.x. An x86 HVM guest with PCI pass through devices can force the allocation of all IDT vectors on the system by rebooting itself with MSI or MSI-X capabilities enabled and entries setup. Such reboots will leak any vectors...

CVE-2021-3308

An issue was discovered in Xen 4.12.3 through 4.12.4 and 4.13.1 through 4.14.x. An x86 HVM guest with PCI pass through devices can force the allocation of all IDT vectors on the system by rebooting itself with MSI or MSI-X capabilities enabled and entries setup. Such reboots will leak any vectors...

openSUSE Security Update : xen (openSUSE-2020-2331)

This update for xen fixes the following issues : - CVE-2020-29480: Fixed an issue which could have allowed leak of non-sensitive data to administrator guests bsc117949 XSA-115. - CVE-2020-29481: Fixed an issue which could have allowd to new domains to inherit existing node permissions bsc1179498...

IRQ vector leak on x86

ISSUE DESCRIPTION An x86 HVM guest with PCI pass through devices can force the allocation of all IDT vectors on the system by rebooting itself with MSI or MSI-X capabilities enabled and entries setup. Such reboots will leak any vectors used by the MSI-X entries that the guest might had enabled, a...

XENMEM_aquire_resources Error Path DoS (XSA-334)

A denial of service DoS vulnerability exists in Xen servers XENMEMacquireresource due to an error path exiting without releasing an RCU Read, Copy, Update reference. An authenticated, local attacker can exploit this issue, via a malicious HVM stubdomain which can cause an RCU reference to be...

Xen xenstored watch DoS (XSA-348)

According to its self-reported version number, the Xen hypervisor installed on the remote host is affected by a denial of service vulnerability. When they require assistance from the device model, x86 HVM guests must be temporarily de-scheduled. The device model will signal Xen when it has...

Fedora 32 : xen (2020-df772b417b)

xenstore watch notifications lacking permission checks XSA-115, CVE-2020-29480 1908091 Xenstore: new domains inheriting existing node permissions XSA-322, CVE-2020-29481 1908095 Xenstore: wrong path length check XSA-323, CVE-2020-29482 1908096 Xenstore: guests can crash xenstored via watchs...

OPENSUSE-SU-2020:2331-1 Security update for xen

This update for xen fixes the following issues: - CVE-2020-29480: Fixed an issue which could have allowed leak of non-sensitive data to administrator guests bsc117949 XSA-115. - CVE-2020-29481: Fixed an issue which could have allowd to new domains to inherit existing node permissions bsc1179498...

SUSE SLES12 Security Update : xen (SUSE-SU-2020:3913-1)

This update for xen fixes the following issues : CVE-2020-29480: Fixed an issue which could have allowed leak of non-sensitive data to administrator guests bsc117949 XSA-115. CVE-2020-29481: Fixed an issue which could have allowd to new domains to inherit existing node permissions bsc1179498...

SUSE-SU-2020:3915-1 Security update for xen

This update for xen fixes the following issues: - CVE-2020-29480: Fixed an issue which could have allowed leak of non-sensitive data to administrator guests bsc117949 XSA-115. - CVE-2020-29481: Fixed an issue which could have allowd to new domains to inherit existing node permissions bsc1179498...

SUSE-SU-2020:3913-1 Security update for xen

This update for xen fixes the following issues: - CVE-2020-29480: Fixed an issue which could have allowed leak of non-sensitive data to administrator guests bsc117949 XSA-115. - CVE-2020-29481: Fixed an issue which could have allowd to new domains to inherit existing node permissions bsc1179498...