Medium severity · published Feb 27, 2018
CVE-2018-7540
An issue was discovered in Xen through 4.10.x allowing x86 PV guest OS users to cause a denial of service (host OS CPU hang) via non-preemptable L3/L4 pagetable freeing
6.5
CVSS
0.4%
EPSS
No
On KEV
Description
An issue was discovered in Xen through 4.10.x allowing x86 PV guest OS users to cause a denial of service (host OS CPU hang) via non-preemptable L3/L4 pagetable freeing.
CVSS vector
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 37% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
9.0 · source: NVD
XE
Xen · Xen
through 4.10.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-7540
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-7540
www.securityfocus.com
http://www.securityfocus.com/bid/103174
www.securitytracker.com
http://www.securitytracker.com/id/1040773
Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/03/msg00003.html
lists.debian.org
https://lists.debian.org/debian-lts-announce/2018/11/msg00013.html
security.gentoo.org
https://security.gentoo.org/glsa/201810-06
support.citrix.com
https://support.citrix.com/article/CTX232096
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