CVE-2018-7542
An issue was discovered in Xen 4.8.x through 4.10.x allowing x86 PVH guest OS users to cause a denial of service (NULL pointer dereference and hypervisor crash) by leveraging the mishandling of
02 Description
An issue was discovered in Xen 4.8.x through 4.10.x allowing x86 PVH guest OS users to cause a denial of service (NULL pointer dereference and hypervisor crash) by leveraging the mishandling of
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
- 0.38% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 31.9% 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
- 2018-02-27 19:00Z8 YR AGO
- Last updated
- 2024-08-05 06:31Z2 YR AGO
- Reserved
- 2018-02-27
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-476NULL Pointer DereferenceBase
- Data version
- 5.1
- Document digest
- 006f2c8201d12542be2079a7a59475b4eb4373289bd989ca5195d927ade0a4bd
05 Affected products
06 References
- xenbits.xen.orghttps://xenbits.xen.org/xsa/advisory-256.html
- security.gentoo.orgGLSA-201810-06https://security.gentoo.org/glsa/201810-06
- www.securitytracker.com1040776http://www.securitytracker.com/id/1040776
- www.debian.orgDSA-4131https://www.debian.org/security/2018/dsa-4131
07 Fixed in
Debian 12
- xen Fixed in 4.8.3+comet2+shim4.10.0+comet3-1+deb9u5
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- xen Fixed in 4.8.3+comet2+shim4.10.0+comet3-1+deb9u5
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- xen Fixed in 4.8.3+comet2+shim4.10.0+comet3-1+deb9u5
Source: Debian Security Tracker, the Debian security team. 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.