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ubuntucveUbuntu.comUB:CVE-2021-37159
HistoryJul 21, 2021 - 12:00 a.m.

CVE-2021-37159

2021-07-2100:00:00
ubuntu.com
ubuntu.com
16

6.4 Medium

CVSS3

Attack Vector

PHYSICAL

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

4.4 Medium

CVSS2

Access Vector

LOCAL

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

0.001 Low

EPSS

Percentile

47.7%

hso_free_net_device in drivers/net/usb/hso.c in the Linux kernel through
5.13.4 calls unregister_netdev without checking for the NETREG_REGISTERED
state, leading to a use-after-free and a double free.

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchlinux< 4.15.0-163.171UNKNOWN
ubuntu20.04noarchlinux< 5.4.0-91.102UNKNOWN
ubuntu21.04noarchlinux< 5.11.0-37.41UNKNOWN
ubuntu16.04noarchlinux< 4.4.0-223.256) Available with Ubuntu Pro or Ubuntu Pro (Infra-onlyUNKNOWN
ubuntu18.04noarchlinux-aws< 4.15.0-1116.123UNKNOWN
ubuntu20.04noarchlinux-aws< 5.4.0-1060.63UNKNOWN
ubuntu21.04noarchlinux-aws< 5.11.0-1019.20UNKNOWN
ubuntu14.04noarchlinux-aws< 4.4.0-1103.108) Available with Ubuntu Pro or Ubuntu Pro (Infra-onlyUNKNOWN
ubuntu16.04noarchlinux-aws< 4.4.0-1139.153) Available with Ubuntu Pro or Ubuntu Pro (Infra-onlyUNKNOWN
ubuntu20.04noarchlinux-aws-5.11< 5.11.0-1019.20~20.04.1UNKNOWN
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6.4 Medium

CVSS3

Attack Vector

PHYSICAL

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

4.4 Medium

CVSS2

Access Vector

LOCAL

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

0.001 Low

EPSS

Percentile

47.7%