6.7

CVE-2019-3887: canonical ubuntu_linux Incorrect Authorization

Modified
AliasesUBUNTU-CVE-2019-3887DEBIAN-CVE-2019-3887CGA-23qx-pvwf-rrrf
Published 09-04-2019Last modified 04-08-2024

Vulnerability summary

CVE-2019-3887 is a medium (CVSS 6.7) Incorrect Authorization vulnerability in canonical ubuntu_linux. EPSS estimates a 0.36% chance of exploitation in the next 30 days, higher than 29.6% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 6.7, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
6.7/10
010
Medium · v3.0 (CVE.org)
EPSS score
0.36%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 5 · Related 4
OPENSUSE-SU-2024:10728-1OPENSUSE-SU-2024:13704-1RHSA-2019:2703RHSA-2019:2741USN-3980-2CGA-WJFQ-RJW8-X7XH

Timeline

  1. 09-04-2019
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

A flaw was found in the way KVM hypervisor handled x2APIC Machine Specific Rregister (MSR) access with nested(=1) virtualization enabled. In that, L1 guest could access L0's APIC register values via L2 guest, when 'virtualize x2APIC mode' is enabled. A guest could use this flaw to potentially crash the host kernel resulting in DoS issue. Kernel versions from 4.16 and newer are vulnerable to this issue.

CVSS metrics

8 scores · 5 sources · 3 versions

EPSS trend

Probability

0.36%

Chance of exploitation in the next 30 days

Percentile

30%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.36% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, administrative account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Chainguard81 products
  • hyperv-daemons-6.18All versions (No fix recorded)
  • hyperv-daemons-genericAll versions (No fix recorded)
  • linux-aws-6.12All versions (No fix recorded) | < 6.12.65-r0
  • linux-aws-6.12-boot-installedAll versions (No fix recorded)
  • linux-aws-6.12-fips-boot-installedAll versions (No fix recorded)
Redhat8 products
Ubuntu3 products
  • linux-azure< 4.18.0-1018.18~18.04.1
  • linux-gcp-edge< 4.18.0-1011.12~18.04.1
  • linux-hwe< 4.18.0-20.21~18.04.1
Canonical1 product
Debian1 product
  • linux< 4.19.37-1
Fedoraproject1 product
Linux1 product
The linux foundation1 product

8 vendors · 97 products

References

16 links
Show all 16 references