CVE-2021-28703

grant table v2 status pages may remain accessible after de-allocation take two 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 whe...

SUSE SLES11: xen / xen-doc-html / xen-kmp-default / xen-kmp-pae / xen-libs / etc (SUSE-SU-2021:14848-1)

The remote SUSE Linux SLES11 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:14848-1 advisory. - CVE-2021-0089: Fixed Speculative Code Store Bypass XSA-375 bsc1186433. - CVE-2021-20255: Fixed stack overflow via infinite recursion in...

PT-2021-17907 · Xen +1 · Xen +1

Name of the Vulnerable Software and Affected Versions: Xen versions prior to 4.14 Description: The issue arises when grant table v2 status pages are de-allocated as a guest switches back from v2 to v1, potentially allowing a guest to retain access to a page that was freed and perhaps re-used for...

Privilege Escalation

xen is vulnerable to privilege escalation. The vulnerability exists because the grant table v2 status pages may remain accessible after de-allocation, leading to security restrictions bypass and privilege escalation...

grant table v2 status pages may remain accessible after de-allocation (take two)

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...

SUSE-SU-2021:3140-2 Security update for xen

This update for xen fixes the following issues: - CVE-2021-28701: Fixed race condition in XENMAPSPACEgranttable handling XSA-384 bsc1189632. - Upstream bug fixes bsc1027519...

OracleVM 3.4 : xen (OVMSA-2021-0033)

The remote OracleVM system is missing necessary patches to address security updates: - IOMMU page mapping issues on x86 This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE. Both AMD and Intel allow ACPI tables to specify...

SUSE-SU-2021:3322-1 Security update for xen

This update for xen fixes the following issues: - CVE-2021-28701: Fixed race condition in XENMAPSPACEgranttable handling XSA-384 bsc1189632. - CVE-2021-28694,CVE-2021-28695,CVE-2021-28696: Fixed IOMMU page mapping issues on x86 XSA-378bsc1189373. - CVE-2021-28697: Fixed grant table v2 status page...

Debian DSA-4977-1 : xen - security update

The remote Debian 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-4977 advisory. Multiple vulnerabilities have been discovered in the Xen hypervisor, which could result in privilege escalation, denial of service or information leaks. With the...

SUSE-SU-2021:3140-1 Security update for xen

This update for xen fixes the following issues: - CVE-2021-28701: Fixed race condition in XENMAPSPACEgranttable handling XSA-384 bsc1189632. - Upstream bug fixes bsc1027519...

Denial Of Service (DoS)

xen:edge is vulnerable to denial of service. 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 requires that the hypervisor enforce that...

ALPINE-CVE-2021-28701

Another race in XENMAPSPACEgranttable handling 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...

CVE-2021-28701

Another race in XENMAPSPACEgranttable handling 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...

DEBIAN-CVE-2021-28701

Another race in XENMAPSPACEgranttable handling 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...

CVE-2021-28701

Another race in XENMAPSPACEgranttable handling 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...

UBUNTU-CVE-2021-28701

Another race in XENMAPSPACEgranttable handling 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...

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...

Denial Of Service (DoS)

xen is vulnerable to denial of service. Long running loops in grant table handling In order to properly monitor resource use, Xen maintains information on the grant mappings a domain may create to map grants offered by other domains. In the process of carrying out certain actions, Xen would itera...

openSUSE 15 Security Update : xen (openSUSE-SU-2021:1236-1)

The remote SUSE Linux SUSE15 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2021:1236-1 advisory. - Observable response discrepancy in some IntelR Processors may allow an authorized user to potentially enable information disclosure via...

SUSE-SU-2021:2957-1 Security update for xen

This update for xen fixes the following issues: - CVE-2021-3594: slirp: invalid pointer initialization may lead to information disclosure udpbsc1187378. - CVE-2021-3595: slirp: invalid pointer initialization may lead to information disclosure tftpbsc1187376. - CVE-2021-28698: long running loops i...