CVE-2020-25656

2020-12-0200:00:00

ubuntu.com

4.1 Medium

CVSS3

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

1.9 Low

CVSS2

Access Vector

LOCAL

Access 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

0.0004 Low

EPSS

Percentile

5.3%

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.

OSVersionArchitecturePackageVersionFilename
ubuntu20.04noarchlinux-riscv-5.8< 5.8.0-17.19~20.04.1UNKNOWN
ubuntu20.04noarchlinux-bluefield< 5.4.0-1011.14UNKNOWN
ubuntu18.04noarchlinux< 4.15.0-129.132UNKNOWN
ubuntu20.04noarchlinux< 5.4.0-59.65UNKNOWN
ubuntu20.10noarchlinux< 5.8.0-44.50UNKNOWN
ubuntu16.04noarchlinux< 4.4.0-198.230UNKNOWN
ubuntu20.10noarchlinux-gcp< 5.8.0-1023.24UNKNOWN
ubuntu16.04noarchlinux-gcp< 4.15.0-1091.104~16.04.1UNKNOWN
ubuntu20.04noarchlinux-gcp< 5.4.0-1033.35UNKNOWN
ubuntu18.04noarchlinux-gcp-4.15< 4.15.0-1091.104UNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	20.04	noarch	linux-riscv-5.8	< 5.8.0-17.19~20.04.1	UNKNOWN
ubuntu	20.04	noarch	linux-bluefield	< 5.4.0-1011.14	UNKNOWN
ubuntu	18.04	noarch	linux	< 4.15.0-129.132	UNKNOWN
ubuntu	20.04	noarch	linux	< 5.4.0-59.65	UNKNOWN
ubuntu	20.10	noarch	linux	< 5.8.0-44.50	UNKNOWN
ubuntu	16.04	noarch	linux	< 4.4.0-198.230	UNKNOWN
ubuntu	20.10	noarch	linux-gcp	< 5.8.0-1023.24	UNKNOWN
ubuntu	16.04	noarch	linux-gcp	< 4.15.0-1091.104~16.04.1	UNKNOWN
ubuntu	20.04	noarch	linux-gcp	< 5.4.0-1033.35	UNKNOWN
ubuntu	18.04	noarch	linux-gcp-4.15	< 4.15.0-1091.104	UNKNOWN