CVE-2020-11884

2020-04-2800:00:00

ubuntu.com

7 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

6.9 Medium

CVSS2

Access Vector

LOCAL

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

0.0004 Low

EPSS

Percentile

13.3%

JSON

In the Linux kernel 4.19 through 5.6.7 on the s390 platform, code execution
may occur because of a race condition, as demonstrated by code in
enable_sacf_uaccess in arch/s390/lib/uaccess.c that fails to protect
against a concurrent page table upgrade, aka CID-3f777e19d171. A crash
could also occur.

Notes

Author	Note
sbeattie	this issue only affects s390 kernels

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchlinux< 4.15.0-99.100UNKNOWN
ubuntu19.10noarchlinux< 5.3.0-51.44UNKNOWN
ubuntu20.04noarchlinux< 5.4.0-28.32UNKNOWN
ubuntu18.04noarchlinux-aws-5.3< 5.3.0-1019.21~18.04.1UNKNOWN
ubuntu18.04noarchlinux-azure-4.15< 4.15.0-1083.93UNKNOWN
ubuntu18.04noarchlinux-hwe< 5.3.0-51.44~18.04.2UNKNOWN
ubuntu16.04noarchlinux-hwe< 4.15.0-99.100~16.04.1UNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	18.04	noarch	linux	< 4.15.0-99.100	UNKNOWN
ubuntu	19.10	noarch	linux	< 5.3.0-51.44	UNKNOWN
ubuntu	20.04	noarch	linux	< 5.4.0-28.32	UNKNOWN
ubuntu	18.04	noarch	linux-aws-5.3	< 5.3.0-1019.21~18.04.1	UNKNOWN
ubuntu	18.04	noarch	linux-azure-4.15	< 4.15.0-1083.93	UNKNOWN
ubuntu	18.04	noarch	linux-hwe	< 5.3.0-51.44~18.04.2	UNKNOWN
ubuntu	16.04	noarch	linux-hwe	< 4.15.0-99.100~16.04.1	UNKNOWN