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
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
EPSS
Percentile
10.1%
fs/namei.c in the Linux kernel before 5.5 has a may_create_in_sticky
use-after-free, which allows local users to cause a denial of service
(OOPS) or possibly obtain sensitive information from kernel memory, aka
CID-d0cb50185ae9. One attack vector may be an open system call for a UNIX
domain socket, if the socket is being moved to a new parent directory and
its old parent directory is being removed.
Author | Note |
---|---|
alexmurray | Original fix caused a regression so need second commit as well |
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 18.04 | noarch | linux | < 4.15.0-96.97 | UNKNOWN |
ubuntu | 19.10 | noarch | linux | < 5.3.0-46.38 | UNKNOWN |
ubuntu | 16.04 | noarch | linux | < 4.4.0-177.207 | UNKNOWN |
ubuntu | 18.04 | noarch | linux-aws | < 4.15.0-1065.69 | UNKNOWN |
ubuntu | 19.10 | noarch | linux-aws | < 5.3.0-1016.17 | UNKNOWN |
ubuntu | 14.04 | noarch | linux-aws | < 4.4.0-1065.69 | UNKNOWN |
ubuntu | 16.04 | noarch | linux-aws | < 4.4.0-1105.116 | UNKNOWN |
ubuntu | 16.04 | noarch | linux-aws-hwe | < 4.15.0-1065.69~16.04.1 | UNKNOWN |
ubuntu | 18.04 | noarch | linux-azure | < 5.0.0-1036.38 | UNKNOWN |
ubuntu | 19.10 | noarch | linux-azure | < 5.3.0-1019.20 | UNKNOWN |
launchpad.net/bugs/cve/CVE-2020-8428
nvd.nist.gov/vuln/detail/CVE-2020-8428
security-tracker.debian.org/tracker/CVE-2020-8428
syzkaller.appspot.com/bug?extid=190005201ced78a74ad6
ubuntu.com/security/notices/USN-4318-1
ubuntu.com/security/notices/USN-4319-1
ubuntu.com/security/notices/USN-4320-1
ubuntu.com/security/notices/USN-4324-1
ubuntu.com/security/notices/USN-4325-1
usn.ubuntu.com/lsn/0065-1/
www.cve.org/CVERecord?id=CVE-2020-8428
www.openwall.com/lists/oss-security/2020/01/28/2
www.openwall.com/lists/oss-security/2020/02/02/1
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
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
EPSS
Percentile
10.1%