Vulnerabilities > XEN > XEN > 4.11.4

DATE CVE VULNERABILITY TITLE RISK
2021-12-07 CVE-2021-28703 Unspecified vulnerability in XEN
grant table v2 status pages may remain accessible after de-allocation (take two) Guest get permitted access to certain Xen-owned pages of memory.
local
high complexity
xen
7.0
2021-11-24 CVE-2021-28705 Improper Handling of Exceptional Conditions vulnerability in multiple products
issues with partially successful P2M updates on x86 T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] x86 HVM and PVH guests may be started in populate-on-demand (PoD) mode, to provide a way for them to later easily have more memory assigned.
local
low complexity
xen fedoraproject debian CWE-755
7.8
2021-11-24 CVE-2021-28709 Improper Handling of Exceptional Conditions vulnerability in multiple products
issues with partially successful P2M updates on x86 T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] x86 HVM and PVH guests may be started in populate-on-demand (PoD) mode, to provide a way for them to later easily have more memory assigned.
local
low complexity
xen fedoraproject debian CWE-755
7.8
2021-11-24 CVE-2021-28704 PoD operations on misaligned GFNs T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] x86 HVM and PVH guests may be started in populate-on-demand (PoD) mode, to provide a way for them to later easily have more memory assigned.
local
low complexity
xen fedoraproject debian
8.8
2021-11-24 CVE-2021-28706 Allocation of Resources Without Limits or Throttling vulnerability in multiple products
guests may exceed their designated memory limit When a guest is permitted to have close to 16TiB of memory, it may be able to issue hypercalls to increase its memory allocation beyond the administrator established limit.
network
low complexity
xen fedoraproject debian CWE-770
8.6
2021-11-24 CVE-2021-28707 PoD operations on misaligned GFNs T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] x86 HVM and PVH guests may be started in populate-on-demand (PoD) mode, to provide a way for them to later easily have more memory assigned.
local
low complexity
xen debian fedoraproject
8.8
2021-11-24 CVE-2021-28708 PoD operations on misaligned GFNs T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] x86 HVM and PVH guests may be started in populate-on-demand (PoD) mode, to provide a way for them to later easily have more memory assigned.
local
low complexity
xen debian fedoraproject
8.8
2021-09-08 CVE-2021-28701 Race Condition vulnerability in multiple products
Another race in XENMAPSPACE_grant_table handling Guests are permitted access to certain Xen-owned pages of memory.
local
high complexity
xen debian fedoraproject CWE-362
7.8
2021-08-27 CVE-2021-28697 Race Condition vulnerability in multiple products
grant table v2 status pages may remain accessible after de-allocation Guest get permitted access to certain Xen-owned pages of memory.
local
low complexity
xen fedoraproject debian CWE-362
7.8
2021-08-27 CVE-2021-28698 Infinite Loop vulnerability in multiple products
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.
local
low complexity
xen fedoraproject debian CWE-835
5.5