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debiancveDebian Security Bug TrackerDEBIANCVE:CVE-2022-37394
HistoryAug 03, 2022 - 7:15 a.m.

CVE-2022-37394

2022-08-0307:15:07
Debian Security Bug Tracker
security-tracker.debian.org
14
openstack nova
cve-2022-37394
denial of service
neutron port
vnic_type
macvtap
authenticated user
sr-iov
compute service

CVSS3

3.3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

LOW

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

EPSS

0.001

Percentile

17.2%

An issue was discovered in OpenStack Nova before 23.2.2, 24.x before 24.1.2, and 25.x before 25.0.2. By creating a neutron port with the direct vnic_type, creating an instance bound to that port, and then changing the vnic_type of the bound port to macvtap, an authenticated user may cause the compute service to fail to restart, resulting in a possible denial of service. Only Nova deployments configured with SR-IOV are affected.

OSVersionArchitecturePackageVersionFilename
Debian12allnova< 2:26.0.0~rc1-3nova_2:26.0.0~rc1-3_all.deb
Debian11allnova<= 2:22.0.1-2+deb11u1nova_2:22.0.1-2+deb11u1_all.deb
Debian999allnova< 2:26.0.0~rc1-3nova_2:26.0.0~rc1-3_all.deb
Debian13allnova< 2:26.0.0~rc1-3nova_2:26.0.0~rc1-3_all.deb

CVSS3

3.3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

LOW

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

EPSS

0.001

Percentile

17.2%