Another race in XENMAPSPACE_grant_table handling

ISSUE DESCRIPTION Guests are permitted access to certain Xen-owned pages of memory. The majority of such pages remain allocated / associated with a guest for its entire lifetime. Grant table v2 status pages, however, are de-allocated when a guest switches back from v2 to v1. Freeing such pages...

grant table v2 status pages may remain accessible after de-allocation

ISSUE DESCRIPTION Guest get permitted access to certain Xen-owned pages of memory. The majority of such pages remain allocated / associated with a guest for its entire lifetime. Grant table v2 status pages, however, get de-allocated when a guest switched back from v2 to v1. The freeing of such...

CVE-2021-28687

HVM soft-reset crashes toolstack libxl requires all data structures passed across its public interface to be initialized before use and disposed of afterwards by calling a specific set of functions. Many internal data structures also require this initialize / dispose discipline, but not all of...

CVE-2021-28687

HVM soft-reset crashes toolstack libxl requires all data structures passed across its public interface to be initialized before use and disposed of afterwards by calling a specific set of functions. Many internal data structures also require this initialize / dispose discipline, but not all of...

Design/Logic Flaw

HVM soft-reset crashes toolstack libxl requires all data structures passed across its public interface to be initialized before use and disposed of afterwards by calling a specific set of functions. Many internal data structures also require this initialize / dispose discipline, but not all of...

CVE-2021-28687

HVM soft-reset crashes toolstack libxl requires all data structures passed across its public interface to be initialized before use and disposed of afterwards by calling a specific set of functions. Many internal data structures also require this initialize / dispose discipline, but not all of...

CVE-2021-28687

HVM soft-reset crashes toolstack libxl requires all data structures passed across its public interface to be initialized before use and disposed of afterwards by calling a specific set of functions. Many internal data structures also require this initialize / dispose discipline, but not all of...

CVE-2021-28687

CVE-2021-28687 concerns Xen hypervisor in HVM domains. The issue arises from a path where the soft-reset feature does not initialize the libxl__domain_suspend_state structure, causing an assert when the guest initiates a soft reboot. This leads to crashing of the process monitoring the guest. Imp...

CVE-2021-28687

HVM soft-reset crashes toolstack libxl requires all data structures passed across its public interface to be initialized before use and disposed of afterwards by calling a specific set of functions. Many internal data structures also require this initialize / dispose discipline, but not all of...

CVE-2021-28687

HVM soft-reset crashes toolstack libxl requires all data structures passed across its public interface to be initialized before use and disposed of afterwards by calling a specific set of functions. Many internal data structures also require this initialize / dispose discipline, but not all of...

SUSE: Security Advisory (SUSE-SU-2012:1044-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2021 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

SUSE SLES15 Security Update : xen (SUSE-SU-2021:1460-1)

This update for xen fixes the following issues : CVE-2020-28368: Intel RAPL sidechannel attack aka PLATYPUS attack bsc1178591, XSA-351 CVE-2021-3308: IRQ vector leak on x86 bsc1181254, XSA-360 CVE-2021-28687: HVM soft-reset crashes toolstack bsc1183072, XSA-368 L3: conring size for XEN HV's with...

SUSE-SU-2021:1460-1 Security update for xen

This update for xen fixes the following issues: - CVE-2020-28368: Intel RAPL sidechannel attack aka PLATYPUS attack bsc1178591, XSA-351 - CVE-2021-3308: IRQ vector leak on x86 bsc1181254, XSA-360 - CVE-2021-28687: HVM soft-reset crashes toolstack bsc1183072, XSA-368 - L3: conring size for XEN HV'...

Xen IRQ Vector Leak DoS (XSA-360)

According to its self-reported version number, the Xen hypervisor installed on the remote host is affected by a denial of service DoS vulnerability. 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...

Xen Inverted Conditional DoS (XSA-319)

According to its self-reported version number, the Xen hypervisor installed on the remote host is affected by an issue allowing x86 HVM guest OS users to cause a hypervisor crash. An inverted conditional in x86 HVM guests' dirty video RAM tracking code allows such guests to make Xen de-reference ...

Xen Paging Tables Race Condition (XSA-328)

According to its self-reported version number, the Xen hypervisor installed on the remote host is affected by an issue allowing Intel guest OS users to gain privileges or cause a denial of service because of non-atomic modification of a live EPT PTE. When mapping guest EPT nested paging tables, X...

SUSE: Security Advisory (SUSE-SU-2017:2326-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2021 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

SUSE: Security Advisory (SUSE-SU-2018:1177-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2021 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

openSUSE Security Update : xen (openSUSE-2021-514)

This update for xen fixes the following issues : - CVE-2021-3308: VUL-0: xen: IRQ vector leak on x86 bsc1181254, XSA-360 - CVE-2021-28687: HVM soft-reset crashes toolstack bsc1183072, XSA-368 - L3: conring size for XEN HV's with huge memory to small. Inital Xen logs cut bsc1177204 - L3: XEN domU...

SUSE SLES12 Security Update : xen (SUSE-SU-2021:1023-1)

This update for xen fixes the following issues : CVE-2021-3308: VUL-0: xen: IRQ vector leak on x86 bsc1181254, XSA-360 CVE-2021-28687: VUL-0: xen: HVM soft-reset crashes toolstack bsc1183072, XSA-368 CVE-2021-20257: VUL-0: xen: infinite loop issue in the e1000 NIC emulator bsc1182846...