CVE-2019-3840
A NULL pointer dereference flaw was discovered in libvirt before version 5.0.0 in the way it gets interface information through the QEMU agent. An attacker in a guest VM can use this flaw to crash
02 Description
A NULL pointer dereference flaw was discovered in libvirt before version 5.0.0 in the way it gets interface information through the QEMU agent. An attacker in a guest VM can use this flaw to crash
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
- 1.48% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 73.7% of scored records. A rank, not a probability.
- NVD base score
- 6.3 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.0/AV:N/AC:H/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
- 2019-03-27 12:24Z7 YR AGO
- Last updated
- 2024-08-04 19:19Z2 YR AGO
- Reserved
- 2019-01-03
- Assigning CNA
- redhat
- Record state
- PUBLISHED
- Severity
- Medium (CVSS 5.8)
- CNA CVSS vector
- CVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:C/C:N/I:N/A:H
- Weaknesses
- CWE-476NULL Pointer DereferenceBase
- Data version
- 5.1
- Document digest
- 2c1b20c6aced2e9b223b44ad3fd97da9852ff688415cf3a9a718ccf159239cdb
05 Affected products
06 References
- bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3840
- bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1663051
- www.redhat.comhttps://www.redhat.com/archives/libvir-list/2019-January/msg00241.html
- lists.opensuse.orgopenSUSE-SU-2019:1288http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00101.html
- lists.opensuse.orgopenSUSE-SU-2019:1294http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00105.html
- lists.fedoraproject.orgFEDORA-2019-b3bfc61567https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TZRP2BRMI4RYFRPNFTTIAAUOGVN2ORP7/
- access.redhat.comRHSA-2019:2294https://access.redhat.com/errata/RHSA-2019:2294
07 Fixed in
Debian 12
- libvirt Fixed in 5.0.0-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- libvirt Fixed in 5.0.0-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- libvirt Fixed in 5.0.0-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- libvirt Fixed in 1.3.1-1ubuntu10.25
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 18.04 LTS
- libvirt Fixed in 4.0.0-1ubuntu8.8
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. 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.