CVE-2020-8648

2020-02-0600:00:00

ubuntu.com

3.6 Low

CVSS2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

PARTIAL

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

7.1 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

HIGH

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

0.001 Low

EPSS

Percentile

32.7%

JSON

There is a use-after-free vulnerability in the Linux kernel through 5.5.2
in the n_tty_receive_buf_common function in drivers/tty/n_tty.c.

Notes

Author	Note
cascardo	This looks like a race between set_selection_kernel and paste_selection that may lead to data leak.

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchlinux< 4.15.0-99.100UNKNOWN
ubuntu19.10noarchlinux< 5.3.0-51.44UNKNOWN
ubuntu16.04noarchlinux< 4.4.0-178.208UNKNOWN
ubuntu18.04noarchlinux-aws< 4.15.0-1066.70UNKNOWN
ubuntu19.10noarchlinux-aws< 5.3.0-1017.18UNKNOWN
ubuntu14.04noarchlinux-aws< 4.4.0-1066.70UNKNOWN
ubuntu16.04noarchlinux-aws< 4.4.0-1106.117UNKNOWN
ubuntu18.04noarchlinux-aws-5.3< 5.3.0-1017.18~18.04.1UNKNOWN
ubuntu16.04noarchlinux-aws-hwe< 4.15.0-1066.70~16.04.1UNKNOWN
ubuntu19.10noarchlinux-azure< 5.3.0-1020.21UNKNOWN

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	16.04	noarch	linux	< 4.4.0-178.208	UNKNOWN
ubuntu	18.04	noarch	linux-aws	< 4.15.0-1066.70	UNKNOWN
ubuntu	19.10	noarch	linux-aws	< 5.3.0-1017.18	UNKNOWN
ubuntu	14.04	noarch	linux-aws	< 4.4.0-1066.70	UNKNOWN
ubuntu	16.04	noarch	linux-aws	< 4.4.0-1106.117	UNKNOWN
ubuntu	18.04	noarch	linux-aws-5.3	< 5.3.0-1017.18~18.04.1	UNKNOWN
ubuntu	16.04	noarch	linux-aws-hwe	< 4.15.0-1066.70~16.04.1	UNKNOWN
ubuntu	19.10	noarch	linux-azure	< 5.3.0-1020.21	UNKNOWN