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Fencer Vulns
high 7.7

CVE-2017-2635 json

A NULL pointer deference flaw was found in the way libvirt from 2.5.0 to 3.0.0 handled empty drives.

published 2018-08-22 8 y ago modified 2026-06-17 4 mo ago also EUVD-2017-11796

cvss
7.7
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.5%
EPSS 1.5% chance of exploitation in 30 days, percentile 74%
public exploits
0
none known

Summary

A NULL pointer deference flaw was found in the way libvirt from 2.5.0 to 3.0.0 handled empty drives. A remote authenticated attacker could use this flaw to crash libvirtd daemon resulting in denial of service.

Patch / fix

  • libvirt Debian 14, Debian 13, Debian 12 3.0.0-3

debian advisories DEBIAN-CVE-2017-2635

  • libvirt openSUSE Tumbleweed 7.7.0-2.1

opensuse advisories openSUSE-SU-2024:11008-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2017-2635 updated cvss 7.7

libvirt: Null pointer dereference when updating storage size on empty drives

  • Red Hat Enterprise Linux 5 libvirt Red Hat Enterprise Linux 6 libvirt, libvirt-client, libvirt-python, libvirt-lock-sanlock Red Hat Enterprise Linux 7 libvirt, libvirt-nss, libvirt-libs, libvirt-admin, libvirt-client, libvirt-daemon, +24 more Red Hat Enterprise Virtualization 3 libvirt, mingw-virt-viewer, mingw32-virt-viewer, mingw64-virt-viewer Red Hat Storage 3 libvirt-lock-sanlock
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.53% chance of exploitation in the next 30 days, higher than 74% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.0 7.7 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
NVD 3.0 6.5 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 4.0 AV:N/AC:L/Au:S/C:N/I:N/A:P

Affected products

  • The libvirt Project libvirt

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.