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Ubuntu: USN-5399-1 (CVE-2021-3667): libvirt vulnerabilities

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Ubuntu: USN-5399-1 (CVE-2021-3667): libvirt vulnerabilities

Severity
4
CVSS
(AV:N/AC:M/Au:S/C:N/I:N/A:P)
Published
08/23/2021
Created
05/05/2022
Added
05/03/2022
Modified
05/03/2022

Description

An improper locking issue was found in the virStoragePoolLookupByTargetPath API of libvirt. It occurs in the storagePoolLookupByTargetPath function where a locked virStoragePoolObj object is not properly released on ACL permission failure. Clients connecting to the read-write socket with limited ACL permissions could use this flaw to acquire the lock and prevent other users from accessing storage pool/volume APIs, resulting in a denial of service condition. The highest threat from this vulnerability is to system availability.

Solution(s)

  • ubuntu-upgrade-libvirt-daemon
  • ubuntu-upgrade-libvirt-daemon-system
  • ubuntu-upgrade-libvirt0

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