CVE-2021-3753

2021-09-0200:00:00

ubuntu.com

4.7 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:L/AC:H/PR:L/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

14.1%

JSON

A race problem was seen in the vt_k_ioctl in drivers/tty/vt/vt_ioctl.c in
the Linux kernel, which may cause an out of bounds read in vt as the write
access to vc_mode is not protected by lock-in vt_ioctl (KDSETMDE). The
highest threat from this vulnerability is to data confidentiality.

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchlinux< 4.15.0-162.170UNKNOWN
ubuntu20.04noarchlinux< 5.4.0-90.101UNKNOWN
ubuntu21.04noarchlinux< 5.11.0-38.42UNKNOWN
ubuntu16.04noarchlinux< 4.4.0-242.276) Available with Ubuntu Pro or Ubuntu Pro (Infra-onlyUNKNOWN
ubuntu18.04noarchlinux-aws< 4.15.0-1115.122UNKNOWN
ubuntu20.04noarchlinux-aws< 5.4.0-1059.62UNKNOWN
ubuntu21.04noarchlinux-aws< 5.11.0-1020.21UNKNOWN
ubuntu14.04noarchlinux-aws< 4.4.0-1120.126) Available with Ubuntu Pro or Ubuntu Pro (Infra-onlyUNKNOWN
ubuntu16.04noarchlinux-aws< 4.4.0-1158.173) Available with Ubuntu Pro or Ubuntu Pro (Infra-onlyUNKNOWN
ubuntu20.04noarchlinux-aws-5.11< 5.11.0-1020.21~20.04.2UNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	18.04	noarch	linux	< 4.15.0-162.170	UNKNOWN
ubuntu	20.04	noarch	linux	< 5.4.0-90.101	UNKNOWN
ubuntu	21.04	noarch	linux	< 5.11.0-38.42	UNKNOWN
ubuntu	16.04	noarch	linux	< 4.4.0-242.276) Available with Ubuntu Pro or Ubuntu Pro (Infra-only	UNKNOWN
ubuntu	18.04	noarch	linux-aws	< 4.15.0-1115.122	UNKNOWN
ubuntu	20.04	noarch	linux-aws	< 5.4.0-1059.62	UNKNOWN
ubuntu	21.04	noarch	linux-aws	< 5.11.0-1020.21	UNKNOWN
ubuntu	14.04	noarch	linux-aws	< 4.4.0-1120.126) Available with Ubuntu Pro or Ubuntu Pro (Infra-only	UNKNOWN
ubuntu	16.04	noarch	linux-aws	< 4.4.0-1158.173) Available with Ubuntu Pro or Ubuntu Pro (Infra-only	UNKNOWN
ubuntu	20.04	noarch	linux-aws-5.11	< 5.11.0-1020.21~20.04.2	UNKNOWN