Medium severity · published Aug 17, 2018
CVE-2018-15469
An issue was discovered in Xen through 4.11.x
6.5
CVSS
0.4%
EPSS
No
On KEV
Description
An issue was discovered in Xen through 4.11.x. ARM never properly implemented grant table v2, either in the hypervisor or in Linux. Unfortunately, an ARM guest can still request v2 grant tables; they will simply not be properly set up, resulting in subsequent grant-related hypercalls hitting BUG() checks. An unprivileged guest can cause a BUG() check in the hypervisor, resulting in a denial-of-service (crash).
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 36% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
8.0 · source: NVD
XE
Xen · Xen
through 4.11.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-15469
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-15469
Patch
http://xenbits.xen.org/xsa/advisory-268.html
Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/11/msg00013.html
Third Party Advisory
https://security.gentoo.org/glsa/201810-06
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