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nvd[email protected]NVD:CVE-2020-25656
HistoryDec 02, 2020 - 1:15 a.m.

CVE-2020-25656

2020-12-0201:15:12
CWE-416
[email protected]
web.nvd.nist.gov
7
linux kernel
console subsystem
use-after-free
ioctls
kdgkbsent
kdskbsent
local user
out-of-bounds
memory access
data confidentiality

CVSS2

1.9

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

CVSS3

4.1

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

AI Score

6.2

Confidence

Low

EPSS

0

Percentile

5.1%

JSON

A flaw was found in the Linux kernel. A use-after-free was found in the way the console subsystem was using ioctls KDGKBSENT and KDSKBSENT. A local user could use this flaw to get read memory access out of bounds. The highest threat from this vulnerability is to data confidentiality.

Affected configurations

Nvd
Node
linuxlinux_kernelRange<5.10
OR
linuxlinux_kernelMatch5.10rc1
Node
redhatenterprise_linuxMatch7.0
OR
redhatenterprise_linuxMatch8.0
Node
debiandebian_linuxMatch9.0
Node
starwindsoftwarestarwind_virtual_sanMatchv8build12533vsphere
OR
starwindsoftwarestarwind_virtual_sanMatchv8build12658vsphere
OR
starwindsoftwarestarwind_virtual_sanMatchv8build12859vsphere
OR
starwindsoftwarestarwind_virtual_sanMatchv8build13170vsphere
OR
starwindsoftwarestarwind_virtual_sanMatchv8build13586vsphere
OR
starwindsoftwarestarwind_virtual_sanMatchv8build13861vsphere
VendorProductVersionCPE
linuxlinux_kernel*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linuxlinux_kernel5.10cpe:2.3:o:linux:linux_kernel:5.10:rc1:*:*:*:*:*:*
redhatenterprise_linux7.0cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
redhatenterprise_linux8.0cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
debiandebian_linux9.0cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
starwindsoftwarestarwind_virtual_sanv8cpe:2.3:a:starwindsoftware:starwind_virtual_san:v8:build12533:*:*:*:vsphere:*:*
starwindsoftwarestarwind_virtual_sanv8cpe:2.3:a:starwindsoftware:starwind_virtual_san:v8:build12658:*:*:*:vsphere:*:*
starwindsoftwarestarwind_virtual_sanv8cpe:2.3:a:starwindsoftware:starwind_virtual_san:v8:build12859:*:*:*:vsphere:*:*
starwindsoftwarestarwind_virtual_sanv8cpe:2.3:a:starwindsoftware:starwind_virtual_san:v8:build13170:*:*:*:vsphere:*:*
starwindsoftwarestarwind_virtual_sanv8cpe:2.3:a:starwindsoftware:starwind_virtual_san:v8:build13586:*:*:*:vsphere:*:*
Rows per page:
1-10 of 111

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CVSS2

1.9

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

CVSS3

4.1

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

AI Score

6.2

Confidence

Low

EPSS

0

Percentile

5.1%

JSON
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