CVE-2019-19583: debian debian_linux
Vulnerability summary
CVE-2019-19583 is a high (CVSS 7.5) vulnerability in debian debian_linux. EPSS estimates a 2.41% chance of exploitation in the next 30 days, higher than 84.1% of scored vulnerabilities.
Severe, CVSS 7.5 (NVD); no exploitation reported by the 5 checked sources; EPSS 2% (FIRST, 03-11-2026)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 11 · Related 10Timeline
- 11-12-2019PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
An issue was discovered in Xen through 4.12.x allowing x86 HVM/PVH guest OS users to cause a denial of service (guest OS crash) because VMX VMEntry checks mishandle a certain case. Please see XSA-260 for background on the MovSS shadow. Please see XSA-156 for background on the need for #DB interception. The VMX VMEntry checks do not like the exact combination of state which occurs when #DB in intercepted, Single Stepping is active, and blocked by STI/MovSS is active, despite this being a legitimate state to be in. The resulting VMEntry failure is fatal to the guest. HVM/PVH guest userspace code may be able to crash the guest, resulting in a guest Denial of Service. All versions of Xen are affected. Only systems supporting VMX hardware virtual extensions (Intel, Cyrix, or Zhaoxin CPUs) are affected. Arm and AMD systems are unaffected. Only HVM/PVH guests are affected. PV guests cannot leverage the vulnerability.
CVSS metrics
5 scores · 4 sources · 2 versions- OSV · AlpineEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
2.41%
Chance of exploitation in the next 30 days
Percentile
84%
Versus all other CVEs
30-day change
Increase +0.26 pp
From 2.15% 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 causeNo weakness data has been published for this record.
Affected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Debian2 products
- xen< 4.11.3+24-g14b62ab3e5-1
- debian_linuxEOL9.0 | 10.0
Alpine1 product
- xen≥ 4.8.0, < 4.12.2-r0 | ≥ 4.8.0, < 4.13.0-r0 | ≥ 4.8.0, < 4.10.4-r2 | ≥ 4.8.0, < 4.11.3-r1
Fedoraproject1 product
- fedoraEOL30 | 31
Opensuse1 product
- leapEOL15.1
Ubuntu1 product
- xenAll versions (No fix recorded)
Xen1 product
- xen≥ 4.8.0, ≤ 4.12.1
6 vendors · 7 products
References
11 links- lists.opensuse.org/opensuse-security-announce/2020-01/msg00011.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
