CVE-2023-3567

2023-07-2400:00:00

ubuntu.com

linux kernel

use-after-free

system crash

kernel information

local privilege escalation

7.1 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

HIGH

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

0.0004 Low

EPSS

Percentile

10.1%

JSON

A use-after-free flaw was found in vcs_read in drivers/tty/vt/vc_screen.c
in vc_screen in the Linux Kernel. This issue may allow an attacker with
local user access to cause a system crash or leak internal kernel
information.

Bugs

Notes

Author	Note
	Priority reason: A use-after-free that may be controlled by an unprivileged user which can lead to local privilege escalation.

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchlinux< anyUNKNOWN
ubuntu20.04noarchlinux< 5.4.0-149.166UNKNOWN
ubuntu22.04noarchlinux< 5.15.0-72.79UNKNOWN
ubuntu14.04noarchlinux< 3.13.0-193.244UNKNOWN
ubuntu16.04noarchlinux< 4.4.0-244.278UNKNOWN
ubuntu22.04noarchlinux-allwinner-5.19< 5.19.0-1012.12~22.04.1UNKNOWN
ubuntu18.04noarchlinux-aws< anyUNKNOWN
ubuntu20.04noarchlinux-aws< 5.4.0-1102.110UNKNOWN
ubuntu22.04noarchlinux-aws< 5.15.0-1036.40UNKNOWN
ubuntu14.04noarchlinux-aws< 4.4.0-1122.128UNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	18.04	noarch	linux	< any	UNKNOWN
ubuntu	20.04	noarch	linux	< 5.4.0-149.166	UNKNOWN
ubuntu	22.04	noarch	linux	< 5.15.0-72.79	UNKNOWN
ubuntu	14.04	noarch	linux	< 3.13.0-193.244	UNKNOWN
ubuntu	16.04	noarch	linux	< 4.4.0-244.278	UNKNOWN
ubuntu	22.04	noarch	linux-allwinner-5.19	< 5.19.0-1012.12~22.04.1	UNKNOWN
ubuntu	18.04	noarch	linux-aws	< any	UNKNOWN
ubuntu	20.04	noarch	linux-aws	< 5.4.0-1102.110	UNKNOWN
ubuntu	22.04	noarch	linux-aws	< 5.15.0-1036.40	UNKNOWN
ubuntu	14.04	noarch	linux-aws	< 4.4.0-1122.128	UNKNOWN