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nvd[email protected]NVD:CVE-2020-27673
HistoryOct 22, 2020 - 9:15 p.m.

CVE-2020-27673

2020-10-2221:15:14
web.nvd.nist.gov
6
linux kernel
xen
denial of service
host os hang
event rate
dom0

CVSS2

4.9

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

AV:L/AC:L/Au:N/C:N/I:N/A:C

CVSS3

5.5

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

EPSS

0

Percentile

14.2%

An issue was discovered in the Linux kernel through 5.9.1, as used with Xen through 4.14.x. Guest OS users can cause a denial of service (host OS hang) via a high rate of events to dom0, aka CID-e99502f76271.

Affected configurations

Nvd
Node
linuxlinux_kernelRange2.6.12–4.4.244
OR
linuxlinux_kernelRange4.5.0–4.9.244
OR
linuxlinux_kernelRange4.10.0–4.14.207
OR
linuxlinux_kernelRange4.15.0–4.19.155
OR
linuxlinux_kernelRange4.20.0–5.4.75
OR
linuxlinux_kernelRange5.5.0–5.9.5
OR
linuxlinux_kernelMatch5.10rc1
Node
debiandebian_linuxMatch9.0
Node
opensuseleapMatch15.1
OR
opensuseleapMatch15.2
Node
xenxenRange≤4.14.0
VendorProductVersionCPE
linuxlinux_kernel*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linuxlinux_kernel5.10cpe:2.3:o:linux:linux_kernel:5.10:rc1:*:*:*:*:*:*
debiandebian_linux9.0cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
opensuseleap15.1cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
opensuseleap15.2cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*
xenxen*cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*

CVSS2

4.9

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

AV:L/AC:L/Au:N/C:N/I:N/A:C

CVSS3

5.5

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

EPSS

0

Percentile

14.2%