CVE-2020-25669HIGH
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
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
Vulnerable Software
Configuration 1
OR
Configuration 2
OR
Tenable Plugins
| ID | Name | Product | Family | Severity |
|---|---|---|---|---|
| 151419 | EulerOS Virtualization 3.0.2.2 : kernel (EulerOS-SA-2021-2140) | Nessus | Huawei Local Security Checks | high |
| 151307 | EulerOS Virtualization for ARM 64 3.0.2.0 : kernel (EulerOS-SA-2021-2075) | Nessus | Huawei Local Security Checks | high |
| 151229 | EulerOS Virtualization 3.0.6.6 : kernel (EulerOS-SA-2021-2040) | Nessus | Huawei Local Security Checks | high |
| 150536 | SUSE SLES11 Security Update : kernel (SUSE-SU-2021:14630-1) | Nessus | SuSE Local Security Checks | high |
| 149098 | EulerOS 2.0 SP3 : kernel (EulerOS-SA-2021-1808) | Nessus | Huawei Local Security Checks | high |
| 148494 | Ubuntu 20.04 LTS : Linux kernel (OEM) vulnerabilities (USN-4912-1) | Nessus | Ubuntu Local Security Checks | high |
| 148041 | EulerOS 2.0 SP5 : kernel (EulerOS-SA-2021-1684) | Nessus | Huawei Local Security Checks | high |
| 148009 | Ubuntu 18.04 LTS / 20.04 LTS : Linux kernel vulnerabilities (USN-4750-1) | Nessus | Ubuntu Local Security Checks | high |
| 147983 | Ubuntu 16.04 LTS / 18.04 LTS : Linux kernel vulnerabilities (USN-4749-1) | Nessus | Ubuntu Local Security Checks | high |
| 147978 | Ubuntu 20.04 LTS / 20.10 : Linux kernel vulnerabilities (USN-4751-1) | Nessus | Ubuntu Local Security Checks | high |
| 147690 | EulerOS Virtualization 2.9.0 : kernel (EulerOS-SA-2021-1642) | Nessus | Huawei Local Security Checks | high |
| 147512 | EulerOS Virtualization 2.9.1 : kernel (EulerOS-SA-2021-1604) | Nessus | Huawei Local Security Checks | high |
| 146511 | SUSE SLES12 Security Update : kernel (SUSE-SU-2021:0452-1) | Nessus | SuSE Local Security Checks | high |
| 146476 | SUSE SLES12 Security Update : kernel (SUSE-SU-2021:0437-1) | Nessus | SuSE Local Security Checks | high |
| 146474 | SUSE SLES15 Security Update : kernel (SUSE-SU-2021:0438-1) | Nessus | SuSE Local Security Checks | high |
| 146470 | SUSE SLES12 Security Update : kernel (SUSE-SU-2021:0434-1) | Nessus | SuSE Local Security Checks | high |
| 146282 | openSUSE Security Update : RT kernel (openSUSE-2021-242) | Nessus | SuSE Local Security Checks | high |
| 145516 | Ubuntu 16.04 LTS : Linux kernel vulnerabilities (USN-4709-1) | Nessus | Ubuntu Local Security Checks | high |
| 145510 | Ubuntu 16.04 LTS : Linux kernel vulnerabilities (USN-4708-1) | Nessus | Ubuntu Local Security Checks | high |
| 145005 | Amazon Linux AMI : kernel (ALAS-2021-1461) | Nessus | Amazon Linux Local Security Checks | medium |
| 144693 | EulerOS 2.0 SP9 : kernel (EulerOS-SA-2021-1028) | Nessus | Huawei Local Security Checks | high |
| 144687 | EulerOS 2.0 SP9 : kernel (EulerOS-SA-2021-1009) | Nessus | Huawei Local Security Checks | high |
| 144494 | Debian DLA-2494-1 : linux security update | Nessus | Debian Local Security Checks | high |
| 144464 | Amazon Linux AMI : kernel (ALAS-2020-1462) (deprecated) | Nessus | Amazon Linux Local Security Checks | high |
| 144313 | openSUSE Security Update : the Linux Kernel (openSUSE-2020-2260) | Nessus | SuSE Local Security Checks | medium |
| 144259 | SUSE SLES15 Security Update : kernel (SUSE-SU-2020:3798-1) | Nessus | SuSE Local Security Checks | high |
| 144168 | EulerOS 2.0 SP8 : kernel (EulerOS-SA-2020-2514) | Nessus | Huawei Local Security Checks | medium |
| 144143 | SUSE SLES15 Security Update : kernel (SUSE-SU-2020:3764-1) | Nessus | SuSE Local Security Checks | high |
| 144101 | SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2020:3748-1) | Nessus | SuSE Local Security Checks | medium |
| 144097 | Debian DLA-2483-1 : linux-4.19 security update | Nessus | Debian Local Security Checks | high |
| 143860 | SUSE SLES12 Security Update : kernel (SUSE-SU-2020:3717-1) | Nessus | SuSE Local Security Checks | medium |
| 143633 | SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2020:3718-1) | Nessus | SuSE Local Security Checks | medium |
| 143619 | SUSE SLES12 Security Update : kernel (SUSE-SU-2020:3715-1) | Nessus | SuSE Local Security Checks | medium |
| 143589 | Amazon Linux 2 : kernel (ALAS-2020-1566) | Nessus | Amazon Linux Local Security Checks | medium |
| 143523 | openSUSE Security Update : the Linux Kernel (openSUSE-2020-2161) | Nessus | SuSE Local Security Checks | medium |
| 143314 | openSUSE Security Update : the Linux Kernel (openSUSE-2020-2034) | Nessus | SuSE Local Security Checks | high |