CVE-2020-12771

2020-05-0900:00:00

ubuntu.com

5.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

4.9 Medium

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

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

0.001 Low

EPSS

Percentile

43.7%

JSON

An issue was discovered in the Linux kernel through 5.6.11.
btree_gc_coalesce in drivers/md/bcache/btree.c has a deadlock if a
coalescing operation fails.

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchlinux< 4.15.0-115.116UNKNOWN
ubuntu20.04noarchlinux< 5.4.0-45.49UNKNOWN
ubuntu16.04noarchlinux< 4.4.0-187.217UNKNOWN
ubuntu18.04noarchlinux-aws< 4.15.0-1080.84UNKNOWN
ubuntu20.04noarchlinux-aws< 5.4.0-1022.22UNKNOWN
ubuntu14.04noarchlinux-aws< 4.4.0-1076.80) Available with Ubuntu Pro or Ubuntu Pro (Infra-onlyUNKNOWN
ubuntu16.04noarchlinux-aws< 4.4.0-1112.124UNKNOWN
ubuntu18.04noarchlinux-aws-5.3< 5.3.0-1033.35UNKNOWN
ubuntu18.04noarchlinux-aws-5.4< 5.4.0-1022.22~18.04.1UNKNOWN
ubuntu16.04noarchlinux-aws-hwe< 4.15.0-1080.84~16.04.1UNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	18.04	noarch	linux	< 4.15.0-115.116	UNKNOWN
ubuntu	20.04	noarch	linux	< 5.4.0-45.49	UNKNOWN
ubuntu	16.04	noarch	linux	< 4.4.0-187.217	UNKNOWN
ubuntu	18.04	noarch	linux-aws	< 4.15.0-1080.84	UNKNOWN
ubuntu	20.04	noarch	linux-aws	< 5.4.0-1022.22	UNKNOWN
ubuntu	14.04	noarch	linux-aws	< 4.4.0-1076.80) Available with Ubuntu Pro or Ubuntu Pro (Infra-only	UNKNOWN
ubuntu	16.04	noarch	linux-aws	< 4.4.0-1112.124	UNKNOWN
ubuntu	18.04	noarch	linux-aws-5.3	< 5.3.0-1033.35	UNKNOWN
ubuntu	18.04	noarch	linux-aws-5.4	< 5.4.0-1022.22~18.04.1	UNKNOWN
ubuntu	16.04	noarch	linux-aws-hwe	< 4.15.0-1080.84~16.04.1	UNKNOWN