CVE-2018-19967: debian debian_linux Improper Input Validation
Vulnerability summary
CVE-2018-19967 is a medium (CVSS 6.5) Improper Input Validation vulnerability in debian debian_linux. EPSS estimates a 0.45% chance of exploitation in the next 30 days, higher than 39.4% of scored vulnerabilities.
Not severe (CVSS 6.5, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 9 · Related 7Timeline
- 08-12-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
An issue was discovered in Xen through 4.11.x on Intel x86 platforms allowing guest OS users to cause a denial of service (host OS hang) because Xen does not work around Intel's mishandling of certain HLE transactions associated with the KACQUIRE instruction prefix.
CVSS metrics
5 scores · 4 sources · 2 versions- OSV · AlpineEcosystem advisory · calculated6.5MediumCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
- OSV · UbuntuEcosystem advisory · calculated6.5MediumCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated6.5MediumCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
EPSS trend
Probability
0.45%
Chance of exploitation in the next 30 days
Percentile
39%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.45% on 04-10-2026
Known exploited
Compare KEV catalogsNot in the CISA KEV catalog.
Not in the ENISA CNW catalog.
Not 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
Suse2 products
- xen&distro=SUSE Linux Enterprise Module for Basesystem 15< 4.10.3_02-3.14.1
- xen&distro=SUSE Linux Enterprise Module for Server Applications 15< 4.10.3_02-3.14.1
Alpine1 product
- xen< 4.11.1-r0 | < 4.8.5-r0 | < 4.9.3-r1 | < 4.10.2-r1
Opensuse1 product
- xen&distro=openSUSE Leap 15.0< 4.10.3_02-lp150.2.16.1
Ubuntu1 product
- xenAll versions (No fix recorded)
Xen1 product
- xen≤ 4.11.1
6 vendors · 8 products
References
28 linksShow all 28 references
- lists.opensuse.org/archives/…Advisory