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CVE-2020-25637

MEDIUM
6.7
CVSS Score
Published: October 6, 2020 at 12:00 AM UTC
Updated: June 17, 2026 at 03:07 AM UTC
2 products affected across 2 vendorsLeapLibvirt

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Severity
MEDIUM6.7
Exploit prediction
EPSS 0.5%

Description

A double free memory issue was found to occur in the libvirt API, in versions before 6.8.0, responsible for requesting information about network interfaces of a running QEMU domain. This flaw affects the polkit access control driver. Specifically, clients connecting to the read-write socket with limited ACL permissions could use this flaw to crash the libvirt daemon, resulting in a denial of service, or potentially escalate their privileges on the system. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Leap· openSUSEdrupal
95%
15.115.2
Libvirt· Red Hat
95%
v < 6.8.0
Affected range stops below 6.8.0, so it looks safe — our inference, not a vendor statement

References (5)

Vendor AdvisoryMailing ListThird Party Advisory
Source: [email protected]
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00072.html
Vendor AdvisoryMailing ListThird Party Advisory
Source: [email protected]
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00073.html
Issue TrackingPatchVendor Advisory
Source: [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=1881037
Mailing List
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2024/04/msg00000.html
Vendor AdvisoryThird Party Advisory
Source: [email protected]
https://security.gentoo.org/glsa/202210-06

CVSS

6.7MEDIUM[email protected]
Attack Vector
LOCAL
Complexity
LOW
Privileges
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-415

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