CVE-2021-22543
Improper memory handling in Linux KVM
Description
An issue was discovered in Linux: KVM through Improper handling of VM_IO|VM_PFNMAP vmas in KVM can bypass RO checks and can lead to pages being freed while still accessible by the VMM and guest. This allows users with the ability to start and control a VM to read/write random pages of memory and can result in local privilege escalation.
No summary for this CVE yet.
CVSS Vector Breakdown
Exploitability
AV:LAttack VectorLocal
AC:LAttack ComplexityLow
PR:LPrivileges RequiredLow
UI:NUser InteractionNone
Scope
S:UScopeUnchanged
Impact
C:HConfidentialityHigh
I:HIntegrityHigh
A:HAvailabilityHigh
Weaknesses
Affected Products
netapp
commercial·US
Сообщество свободного программного обеспечения
oss-projectaka fsf
Linux Kernel
oss-projectaka linux-kernel, linux
linux
oss-projectaka the linux kernel
fedoraproject
oss-project·USaka fedora project
debian
oss-project·GBaka debian gnu/linux
and 9 more affected products View all →
Exploitability
Official Patch Available
Attack Graph
Products CVE Techniques Tactics
Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.
MITRE ATT&CK
2 techniques Initial Access
Privilege Escalation
References
https://github.com/google/security-research/security/advisories/GHSA-7wq5-phmq-m584
github.com
http://www.openwall.com/lists/oss-security/2021/06/26/1
openwall.com
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4G5YBUVEPHZYXMKNGBZ3S6INFCTEEL4E/
lists.fedoraproject.org
and 46 more references View all →
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