5.1 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
1.2 Low
CVSS2
Access Vector
LOCAL
Access Complexity
HIGH
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:L/AC:H/Au:N/C:N/I:N/A:P
0.001 Low
EPSS
Percentile
21.7%
A race condition in the Linux kernel before 5.6.2 between the
VT_DISALLOCATE ioctl and closing/opening of ttys could lead to a
use-after-free.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 16.04 | noarch | linux-hwe | < 4.15.0-99.100~16.04.1) Available with Ubuntu Pro or Ubuntu Pro (Infra-only | UNKNOWN |
ubuntu | 14.04 | noarch | linux-lts-xenial | < 4.4.0-179.209~14.04.1) Available with Ubuntu Pro or Ubuntu Pro (Infra-only | UNKNOWN |
ubuntu | 18.04 | noarch | linux-oracle | < 4.15.0-1038.42 | UNKNOWN |
ubuntu | 16.04 | noarch | linux-oracle | < 4.15.0-1038.42~16.04.1) Available with Ubuntu Pro or Ubuntu Pro (Infra-only | UNKNOWN |
ubuntu | 20.04 | noarch | linux-raspi | < 5.4.0-1011.11 | UNKNOWN |
ubuntu | 18.04 | noarch | linux | < 4.15.0-99.100 | UNKNOWN |
ubuntu | 16.04 | noarch | linux | < 4.4.0-179.209) Available with Ubuntu Pro or Ubuntu Pro (Infra-only | UNKNOWN |
ubuntu | 18.04 | noarch | linux-aws | < 4.15.0-1066.70 | UNKNOWN |
ubuntu | 14.04 | noarch | linux-aws | < 4.4.0-1067.71) Available with Ubuntu Pro or Ubuntu Pro (Infra-only | UNKNOWN |
ubuntu | 16.04 | noarch | linux-aws | < 4.4.0-1107.118) Available with Ubuntu Pro or Ubuntu Pro (Infra-only | UNKNOWN |
cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6.2
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-36557
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ca4463bf8438b403596edd0ec961ca0d4fbe0220
launchpad.net/bugs/cve/CVE-2020-36557
nvd.nist.gov/vuln/detail/CVE-2020-36557
security-tracker.debian.org/tracker/CVE-2020-36557
5.1 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
1.2 Low
CVSS2
Access Vector
LOCAL
Access Complexity
HIGH
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:L/AC:H/Au:N/C:N/I:N/A:P
0.001 Low
EPSS
Percentile
21.7%