CVE-2020-12657

2020-05-0500:00:00

ubuntu.com

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

4.6 Medium

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

0.0004 Low

EPSS

Percentile

13.3%

JSON

An issue was discovered in the Linux kernel before 5.6.5. There is a
use-after-free in block/bfq-iosched.c related to bfq_idle_slice_timer_body.

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchlinux< 4.15.0-101.102UNKNOWN
ubuntu19.10noarchlinux< 5.3.0-53.47UNKNOWN
ubuntu20.04noarchlinux< 5.4.0-31.35UNKNOWN
ubuntu18.04noarchlinux-aws< 4.15.0-1067.71UNKNOWN
ubuntu19.10noarchlinux-aws< 5.3.0-1019.21UNKNOWN
ubuntu20.04noarchlinux-aws< 5.4.0-1011.11UNKNOWN
ubuntu18.04noarchlinux-aws-5.3< 5.3.0-1019.21~18.04.1UNKNOWN
ubuntu16.04noarchlinux-aws-hwe< 4.15.0-1067.71~16.04.1UNKNOWN
ubuntu19.10noarchlinux-azure< 5.3.0-1022.23UNKNOWN
ubuntu20.04noarchlinux-azure< 5.4.0-1012.12UNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	18.04	noarch	linux	< 4.15.0-101.102	UNKNOWN
ubuntu	19.10	noarch	linux	< 5.3.0-53.47	UNKNOWN
ubuntu	20.04	noarch	linux	< 5.4.0-31.35	UNKNOWN
ubuntu	18.04	noarch	linux-aws	< 4.15.0-1067.71	UNKNOWN
ubuntu	19.10	noarch	linux-aws	< 5.3.0-1019.21	UNKNOWN
ubuntu	20.04	noarch	linux-aws	< 5.4.0-1011.11	UNKNOWN
ubuntu	18.04	noarch	linux-aws-5.3	< 5.3.0-1019.21~18.04.1	UNKNOWN
ubuntu	16.04	noarch	linux-aws-hwe	< 4.15.0-1067.71~16.04.1	UNKNOWN
ubuntu	19.10	noarch	linux-azure	< 5.3.0-1022.23	UNKNOWN
ubuntu	20.04	noarch	linux-azure	< 5.4.0-1012.12	UNKNOWN