CVE-2020-8428

high
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Description

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.

References

http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html

http://packetstormsecurity.com/files/157233/Kernel-Live-Patch-Security-Notice-LSN-0065-1.html

http://www.openwall.com/lists/oss-security/2020/01/28/4

http://www.openwall.com/lists/oss-security/2020/02/02/1

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d0cb50185ae942b03c4327be322055d622dc79f6

https://github.com/torvalds/linux/commit/d0cb50185ae942b03c4327be322055d622dc79f6

https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html

https://security.netapp.com/advisory/ntap-20200313-0003/

https://usn.ubuntu.com/4318-1/

https://usn.ubuntu.com/4319-1/

https://usn.ubuntu.com/4320-1/

https://usn.ubuntu.com/4324-1/

https://usn.ubuntu.com/4325-1/

https://www.debian.org/security/2020/dsa-4667

https://www.debian.org/security/2020/dsa-4698

https://www.openwall.com/lists/oss-security/2020/01/28/2

Details

Source: MITRE

Published: 2020-01-29

Updated: 2020-06-10

Type: CWE-416

Risk Information

CVSS v2

Base Score: 3.6

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

Impact Score: 4.9

Exploitability Score: 3.9

Severity: LOW

CVSS v3

Base Score: 7.1

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

Impact Score: 5.2

Exploitability Score: 1.8

Severity: HIGH

Vulnerable Software

Configuration 1

OR

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Tenable Plugins

View all (21 total)

IDNameProductFamilySeverity
138272SUSE SLES15 Security Update : kernel (SUSE-SU-2020:1663-1)NessusSuSE Local Security Checks
critical
137340Debian DSA-4698-1 : linux - security updateNessusDebian Local Security Checks
medium
137339Debian DLA-2242-1 : linux-4.9 security updateNessusDebian Local Security Checks
medium
136239EulerOS Virtualization for ARM 64 3.0.2.0 : kernel (EulerOS-SA-2020-1536)NessusHuawei Local Security Checks
critical
136124Debian DSA-4667-1 : linux - security updateNessusDebian Local Security Checks
high
135286Ubuntu 18.04 LTS : linux-azure, linux-gcp, linux-gke-5.0, linux-oem-osp1, linux-oracle-5.0 (USN-4325-1)NessusUbuntu Local Security Checks
high
135285Ubuntu 16.04 LTS / 18.04 LTS : linux-aws, linux-aws-hwe, linux-azure, linux-gcp, linux-gke-4.15, (USN-4324-1)NessusUbuntu Local Security Checks
high
135271Ubuntu 16.04 LTS : linux, linux-aws, linux-kvm, linux-raspi2, linux-snapdragon vulnerability (USN-4320-1)NessusUbuntu Local Security Checks
high
135270Ubuntu 18.04 LTS / 19.10 : Linux kernel vulnerabilities (USN-4319-1)NessusUbuntu Local Security Checks
high
135269Ubuntu 16.04 LTS / 18.04 LTS : linux, linux-hwe vulnerabilities (USN-4318-1)NessusUbuntu Local Security Checks
high
135129EulerOS Virtualization for ARM 64 3.0.6.0 : kernel (EulerOS-SA-2020-1342)NessusHuawei Local Security Checks
critical
134875Photon OS 2.0: Linux PHSA-2020-2.0-0219NessusPhotonOS Local Security Checks
high
134874Photon OS 3.0: Linux PHSA-2020-3.0-0069NessusPhotonOS Local Security Checks
high
134784EulerOS 2.0 SP8 : kernel (EulerOS-SA-2020-1292)NessusHuawei Local Security Checks
high
134559openSUSE Security Update : the Linux Kernel (openSUSE-2020-336)NessusSuSE Local Security Checks
critical
134363SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2020:0613-1)NessusSuSE Local Security Checks
critical
134293SUSE SLES12 Security Update : kernel (SUSE-SU-2020:0584-1)NessusSuSE Local Security Checks
critical
134292SUSE SLES12 Security Update : kernel (SUSE-SU-2020:0580-1)NessusSuSE Local Security Checks
critical
134289SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2020:0560-1)NessusSuSE Local Security Checks
critical
134288SUSE SLES12 Security Update : kernel (SUSE-SU-2020:0559-1)NessusSuSE Local Security Checks
critical
134287SUSE SLES12 Security Update : kernel (SUSE-SU-2020:0558-1)NessusSuSE Local Security Checks
critical