CVE-2018-19966: debian debian_linux Interpretation Conflict
Vulnerability summary
CVE-2018-19966 is a high (CVSS 8.8) Interpretation Conflict vulnerability in debian debian_linux. EPSS estimates a 0.44% chance of exploitation in the next 30 days, higher than 38.1% of scored vulnerabilities.
Not severe (CVSS 8.8, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 11 · Related 9Timeline
- 08-12-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
An issue was discovered in Xen through 4.11.x allowing x86 PV guest OS users to cause a denial of service (host OS crash) or possibly gain host OS privileges because of an interpretation conflict for a union data structure associated with shadow paging. NOTE: this issue exists because of an incorrect fix for CVE-2017-15595.
CVSS metrics
5 scores · 4 sources · 2 versions- OSV · AlpineEcosystem advisory · calculated8.8HighCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- OSV · UbuntuEcosystem advisory · calculated8.8HighCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated8.8HighCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
EPSS trend
Probability
0.44%
Chance of exploitation in the next 30 days
Percentile
38%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.44% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Debian2 products
- xen< 4.11.1-1
- debian_linuxEOL9.0
Alpine1 product
- xen≥ 4.11.0, < 4.11.1-r0 | ≥ 4.11.0, < 4.8.5-r0 | ≥ 4.11.0, < 4.9.3-r1 | ≥ 4.11.0, < 4.10.2-r1
Ubuntu1 product
- xenAll versions (No fix recorded)
Xen1 product
- xen≥ 4.11.0, ≤ 4.11.1
4 vendors · 5 products
