CVE-2018-12893
An issue was discovered in Xen through 4.10.x. One of the fixes in XSA-260 added some safety checks to help prevent Xen livelocking with debug exceptions. Unfortunately, due to an oversight, at least
02 Description
An issue was discovered in Xen through 4.10.x. One of the fixes in XSA-260 added some safety checks to help prevent Xen livelocking with debug exceptions. Unfortunately, due to an oversight, at least
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 0.41% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 35.4% of scored records. A rank, not a probability.
- NVD base score
- 6.5 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2018-07-02 17:00Z8 YR AGO
- Last updated
- 2024-08-05 08:45Z2 YR AGO
- Reserved
- 2018-06-26
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-266Incorrect Privilege AssignmentBase
- Data version
- 5.1
- Document digest
- f1671b46042ef7c6f0e44bec60f252b320978c30bd0002d3cff32ebea30dc82b
05 Affected products
06 References
- www.openwall.com[oss-security] 20180627 Xen Security Advisory 265 (CVE-2018-12893) - x86: #DB exception safety check can be triggered by a guesthttp://www.openwall.com/lists/oss-security/2018/06/27/11
- www.debian.orgDSA-4236https://www.debian.org/security/2018/dsa-4236
- support.citrix.comhttps://support.citrix.com/article/CTX235748
- security.gentoo.orgGLSA-201810-06https://security.gentoo.org/glsa/201810-06
- lists.debian.org[debian-lts-announce] 20181112 [SECURITY] [DLA 1577-1] xen security updatehttps://lists.debian.org/debian-lts-announce/2018/11/msg00013.html
- bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1590979
- xenbits.xen.orghttp://xenbits.xen.org/xsa/advisory-265.html
- www.securityfocus.com104572http://www.securityfocus.com/bid/104572
- www.securitytracker.com1041202http://www.securitytracker.com/id/1041202
07 Fixed in
Debian 12
- xen Fixed in 4.8.3+xsa267+shim4.10.1+xsa267-1+deb9u9
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- xen Fixed in 4.8.3+xsa267+shim4.10.1+xsa267-1+deb9u9
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- xen Fixed in 4.8.3+xsa267+shim4.10.1+xsa267-1+deb9u9
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- xen No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 18.04 LTS
- xen No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.