CVE-2022-0168

2022-03-2500:00:00

ubuntu.com

4.4 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

1.4 Low

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

MULTIPLE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

0.0004 Low

EPSS

Percentile

11.7%

JSON

A denial of service (DOS) issue was found in the Linux kernel’s
smb2_ioctl_query_info function in the fs/cifs/smb2ops.c Common Internet
File System (CIFS) due to an incorrect return from the memdup_user
function. This flaw allows a local, privileged (CAP_SYS_ADMIN) attacker to
crash the system.

Bugs

Notes

Author	Note
sbeattie	reproducers in git commits

OSVersionArchitecturePackageVersionFilename
ubuntu20.04noarchlinux< 5.4.0-156.173UNKNOWN
ubuntu22.04noarchlinux< 5.15.0-35.36UNKNOWN
ubuntu20.04noarchlinux-aws< 5.4.0-1107.115UNKNOWN
ubuntu22.04noarchlinux-aws< 5.15.0-1009.11UNKNOWN
ubuntu18.04noarchlinux-aws-5.4< 5.4.0-1107.115~18.04.1) Available with Ubuntu Pro or Ubuntu Pro (Infra-onlyUNKNOWN
ubuntu20.04noarchlinux-azure< 5.4.0-1114.120UNKNOWN
ubuntu22.04noarchlinux-azure< 5.15.0-1008.9UNKNOWN
ubuntu20.04noarchlinux-azure-5.15< 5.15.0-1008.9~20.04.1UNKNOWN
ubuntu18.04noarchlinux-azure-5.4< 5.4.0-1113.119~18.04.1) Available with Ubuntu Pro or Ubuntu Pro (Infra-onlyUNKNOWN
ubuntu22.04noarchlinux-azure-fde< 5.15.0-1008.9UNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	20.04	noarch	linux	< 5.4.0-156.173	UNKNOWN
ubuntu	22.04	noarch	linux	< 5.15.0-35.36	UNKNOWN
ubuntu	20.04	noarch	linux-aws	< 5.4.0-1107.115	UNKNOWN
ubuntu	22.04	noarch	linux-aws	< 5.15.0-1009.11	UNKNOWN
ubuntu	18.04	noarch	linux-aws-5.4	< 5.4.0-1107.115~18.04.1) Available with Ubuntu Pro or Ubuntu Pro (Infra-only	UNKNOWN
ubuntu	20.04	noarch	linux-azure	< 5.4.0-1114.120	UNKNOWN
ubuntu	22.04	noarch	linux-azure	< 5.15.0-1008.9	UNKNOWN
ubuntu	20.04	noarch	linux-azure-5.15	< 5.15.0-1008.9~20.04.1	UNKNOWN
ubuntu	18.04	noarch	linux-azure-5.4	< 5.4.0-1113.119~18.04.1) Available with Ubuntu Pro or Ubuntu Pro (Infra-only	UNKNOWN
ubuntu	22.04	noarch	linux-azure-fde	< 5.15.0-1008.9	UNKNOWN