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ubuntucveUbuntu.comUB:CVE-2021-3564
HistoryJun 08, 2021 - 12:00 a.m.

CVE-2021-3564

2021-06-0800:00:00
ubuntu.com
ubuntu.com
26

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

2.1 Low

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

0.0004 Low

EPSS

Percentile

8.3%

A flaw double-free memory corruption in the Linux kernel HCI device
initialization subsystem was found in the way user attach malicious HCI TTY
Bluetooth device. A local user could use this flaw to crash the system.
This flaw affects all the Linux kernel versions starting from 3.13.

OSVersionArchitecturePackageVersionFilename
ubuntu21.04noarchlinux< 5.11.0-31.33UNKNOWN
ubuntu16.04noarchlinux< 4.4.0-219.252) Available with Ubuntu Pro or Ubuntu Pro (Infra-onlyUNKNOWN
ubuntu18.04noarchlinux< 4.15.0-154.161UNKNOWN
ubuntu20.04noarchlinux< 5.4.0-81.91UNKNOWN
ubuntu20.04noarchlinux-aws-5.8< 5.8.0-1042.44~20.04.1UNKNOWN
ubuntu18.04noarchlinux-aws< 4.15.0-1110.117UNKNOWN
ubuntu20.04noarchlinux-aws< 5.4.0-1055.58UNKNOWN
ubuntu21.04noarchlinux-aws< 5.11.0-1016.17UNKNOWN
ubuntu14.04noarchlinux-aws< 4.4.0-1099.104) Available with Ubuntu Pro or Ubuntu Pro (Infra-onlyUNKNOWN
ubuntu16.04noarchlinux-aws< 4.4.0-1135.149) Available with Ubuntu Pro or Ubuntu Pro (Infra-onlyUNKNOWN
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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

2.1 Low

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

0.0004 Low

EPSS

Percentile

8.3%