CVE-2020-25669

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

A vulnerability was found in the Linux Kernel where the function sunkbd_reinit having been scheduled by sunkbd_interrupt before sunkbd being freed. Though the dangling pointer is set to NULL in sunkbd_disconnect, there is still an alias in sunkbd_reinit causing Use After Free.

References

https://github.com/torvalds/linux/commit/77e70d351db7de07a46ac49b87a6c3c7a60fca7e

https://lists.debian.org/debian-lts-announce/2020/12/msg00027.html

http://www.openwall.com/lists/oss-security/2020/11/20/5

https://lists.debian.org/debian-lts-announce/2020/12/msg00015.html

http://www.openwall.com/lists/oss-security/2020/11/05/2

https://www.openwall.com/lists/oss-security/2020/11/05/2,

https://www.openwall.com/lists/oss-security/2020/11/20/5,

Details

Source: MITRE

Published: 2021-05-26

Updated: 2021-07-02

Type: CWE-416

Risk Information

CVSS v2

Base Score: 7.2

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

Impact Score: 10

Exploitability Score: 3.9

Severity: HIGH

CVSS v3

Base Score: 7.8

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

Impact Score: 5.9

Exploitability Score: 1.8

Severity: HIGH

Tenable Plugins

View all (37 total)

IDNameProductFamilySeverity
153271EulerOS 2.0 SP2 : kernel (EulerOS-SA-2021-2392)NessusHuawei Local Security Checks
high
151419EulerOS Virtualization 3.0.2.2 : kernel (EulerOS-SA-2021-2140)NessusHuawei Local Security Checks
high
151307EulerOS Virtualization for ARM 64 3.0.2.0 : kernel (EulerOS-SA-2021-2075)NessusHuawei Local Security Checks
high
151229EulerOS Virtualization 3.0.6.6 : kernel (EulerOS-SA-2021-2040)NessusHuawei Local Security Checks
high
150536SUSE SLES11 Security Update : kernel (SUSE-SU-2021:14630-1)NessusSuSE Local Security Checks
high
149098EulerOS 2.0 SP3 : kernel (EulerOS-SA-2021-1808)NessusHuawei Local Security Checks
high
148494Ubuntu 20.04 LTS : Linux kernel (OEM) vulnerabilities (USN-4912-1)NessusUbuntu Local Security Checks
high
148041EulerOS 2.0 SP5 : kernel (EulerOS-SA-2021-1684)NessusHuawei Local Security Checks
high
148009Ubuntu 18.04 LTS / 20.04 LTS : Linux kernel vulnerabilities (USN-4750-1)NessusUbuntu Local Security Checks
high
147983Ubuntu 16.04 LTS / 18.04 LTS : Linux kernel vulnerabilities (USN-4749-1)NessusUbuntu Local Security Checks
high
147978Ubuntu 20.04 LTS / 20.10 : Linux kernel vulnerabilities (USN-4751-1)NessusUbuntu Local Security Checks
high
147690EulerOS Virtualization 2.9.0 : kernel (EulerOS-SA-2021-1642)NessusHuawei Local Security Checks
high
147512EulerOS Virtualization 2.9.1 : kernel (EulerOS-SA-2021-1604)NessusHuawei Local Security Checks
high
146511SUSE SLES12 Security Update : kernel (SUSE-SU-2021:0452-1)NessusSuSE Local Security Checks
high
146476SUSE SLES12 Security Update : kernel (SUSE-SU-2021:0437-1)NessusSuSE Local Security Checks
high
146474SUSE SLES15 Security Update : kernel (SUSE-SU-2021:0438-1)NessusSuSE Local Security Checks
high
146470SUSE SLES12 Security Update : kernel (SUSE-SU-2021:0434-1)NessusSuSE Local Security Checks
high
146282openSUSE Security Update : RT kernel (openSUSE-2021-242)NessusSuSE Local Security Checks
high
145516Ubuntu 16.04 LTS : Linux kernel vulnerabilities (USN-4709-1)NessusUbuntu Local Security Checks
high
145510Ubuntu 16.04 LTS : Linux kernel vulnerabilities (USN-4708-1)NessusUbuntu Local Security Checks
high
145005Amazon Linux AMI : kernel (ALAS-2021-1461)NessusAmazon Linux Local Security Checks
medium
144693EulerOS 2.0 SP9 : kernel (EulerOS-SA-2021-1028)NessusHuawei Local Security Checks
high
144687EulerOS 2.0 SP9 : kernel (EulerOS-SA-2021-1009)NessusHuawei Local Security Checks
high
144494Debian DLA-2494-1 : linux security updateNessusDebian Local Security Checks
high
144464Amazon Linux AMI : kernel (ALAS-2020-1462) (deprecated)NessusAmazon Linux Local Security Checks
high
144313openSUSE Security Update : the Linux Kernel (openSUSE-2020-2260)NessusSuSE Local Security Checks
medium
144259SUSE SLES15 Security Update : kernel (SUSE-SU-2020:3798-1)NessusSuSE Local Security Checks
high
144168EulerOS 2.0 SP8 : kernel (EulerOS-SA-2020-2514)NessusHuawei Local Security Checks
medium
144143SUSE SLES15 Security Update : kernel (SUSE-SU-2020:3764-1)NessusSuSE Local Security Checks
high
144101SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2020:3748-1)NessusSuSE Local Security Checks
medium
144097Debian DLA-2483-1 : linux-4.19 security updateNessusDebian Local Security Checks
high
143860SUSE SLES12 Security Update : kernel (SUSE-SU-2020:3717-1)NessusSuSE Local Security Checks
medium
143633SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2020:3718-1)NessusSuSE Local Security Checks
medium
143619SUSE SLES12 Security Update : kernel (SUSE-SU-2020:3715-1)NessusSuSE Local Security Checks
medium
143589Amazon Linux 2 : kernel (ALAS-2020-1566)NessusAmazon Linux Local Security Checks
medium
143523openSUSE Security Update : the Linux Kernel (openSUSE-2020-2161)NessusSuSE Local Security Checks
medium
143314openSUSE Security Update : the Linux Kernel (openSUSE-2020-2034)NessusSuSE Local Security Checks
high