CVE-2021-3679medium
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 lack of CPU resource in the Linux kernel tracing module functionality in versions prior to 5.14-rc3 was found in the way user uses trace ring buffer in a specific way. Only privileged local users (with CAP_SYS_ADMIN capability) could use this flaw to starve the resources causing denial of service.
References
https://bugzilla.redhat.com/show_bug.cgi?id=1989165
https://www.debian.org/security/2021/dsa-4978
https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html
https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html
Details
Source: MITRE
Published: 2021-08-05
Updated: 2022-01-01
Type: CWE-400
Risk Information
CVSS v2
Base Score: 2.1
Vector: AV:L/AC:L/Au:N/C:N/I:N/A:P
Impact Score: 2.9
Exploitability Score: 3.9
Severity: LOW
CVSS v3
Base Score: 5.5
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Impact Score: 3.6
Exploitability Score: 1.8
Severity: MEDIUM
Vulnerable Software
Configuration 1
OR
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.14:-:*:*:*:*:*:*
Configuration 2
OR
Configuration 3
OR
Tenable Plugins
| ID | Name | Product | Family | Severity |
|---|---|---|---|---|
| 156431 | EulerOS 2.0 SP5 : kernel (EulerOS-SA-2021-2934) | Nessus | Huawei Local Security Checks | high |
| 156347 | EulerOS Virtualization 3.0.2.0 : kernel (EulerOS-SA-2021-2818) | Nessus | Huawei Local Security Checks | high |
| 156163 | Debian DLA-2843-1 : linux - LTS security update | Nessus | Debian Local Security Checks | high |
| 155959 | SUSE SLES12 Security Update : kernel (SUSE-SU-2021:3972-1) | Nessus | SuSE Local Security Checks | high |
| 155930 | SUSE SLES15 Security Update : kernel (SUSE-SU-2021:3969-1) | Nessus | SuSE Local Security Checks | high |
| 155910 | SUSE SLES12 Security Update : kernel (SUSE-SU-2021:3929-1) | Nessus | SuSE Local Security Checks | high |
| 155902 | SUSE SLES12 Security Update : kernel (SUSE-SU-2021:3935-1) | Nessus | SuSE Local Security Checks | high |
| 155840 | SUSE SLES15 Security Update : kernel (SUSE-SU-2021:3876-1) | Nessus | SuSE Local Security Checks | high |
| 155824 | openSUSE 15 Security Update : kernel (openSUSE-SU-2021:3876-1) | Nessus | SuSE Local Security Checks | high |
| 155814 | SUSE SLES11 Security Update : kernel (SUSE-SU-2021:14849-1) | Nessus | SuSE Local Security Checks | high |
| 155425 | Oracle Linux 8 : kernel (ELSA-2021-4356) | Nessus | Oracle Linux Local Security Checks | high |
| 155261 | EulerOS 2.0 SP9 : kernel (EulerOS-SA-2021-2688) | Nessus | Huawei Local Security Checks | high |
| 155219 | RHEL 8 : kernel (RHSA-2021:4356) | Nessus | Red Hat Local Security Checks | high |
| 155172 | RHEL 8 : kernel-rt (RHSA-2021:4140) | Nessus | Red Hat Local Security Checks | high |
| 155145 | CentOS 8 : kernel (CESA-2021:4356) | Nessus | CentOS Local Security Checks | high |
| 155119 | EulerOS 2.0 SP9 : kernel (EulerOS-SA-2021-2713) | Nessus | Huawei Local Security Checks | high |
| 155070 | CentOS 8 : kernel-rt (CESA-2021:4140) | Nessus | CentOS Local Security Checks | high |
| 154812 | EulerOS 2.0 SP8 : kernel (EulerOS-SA-2021-2636) | Nessus | Huawei Local Security Checks | high |
| 154279 | Ubuntu 20.04 LTS : Linux kernel (OEM) vulnerabilities (USN-5115-1) | Nessus | Ubuntu Local Security Checks | high |
| 154165 | Oracle Linux 7 : Unbreakable Enterprise kernel (ELSA-2021-9485) | Nessus | Oracle Linux Local Security Checks | high |
| 154163 | Oracle Linux 7 : Unbreakable Enterprise kernel-container (ELSA-2021-9488) | Nessus | Oracle Linux Local Security Checks | high |
| 154016 | OracleVM 3.4 : Unbreakable / etc (OVMSA-2021-0035) | Nessus | OracleVM Local Security Checks | high |
| 153860 | Amazon Linux AMI : kernel (ALAS-2021-1539) | Nessus | Amazon Linux Local Security Checks | high |
| 153802 | Ubuntu 18.04 LTS : Linux kernel (Raspberry Pi) vulnerabilities (USN-5094-2) | Nessus | Ubuntu Local Security Checks | medium |
| 153801 | Ubuntu 18.04 LTS / 20.04 LTS : Linux kernel (Raspberry Pi) vulnerabilities (USN-5091-2) | Nessus | Ubuntu Local Security Checks | high |
| 153799 | Ubuntu 20.04 LTS / 21.04 : Linux kernel vulnerabilities (USN-5092-2) | Nessus | Ubuntu Local Security Checks | high |
| 153797 | Ubuntu 16.04 LTS / 18.04 LTS : Linux kernel vulnerabilities (USN-5094-1) | Nessus | Ubuntu Local Security Checks | high |
| 153789 | Ubuntu 20.04 LTS : Linux kernel (OEM) vulnerabilities (USN-5096-1) | Nessus | Ubuntu Local Security Checks | high |
| 153770 | Ubuntu 20.04 LTS : Linux kernel vulnerabilities (USN-5092-1) | Nessus | Ubuntu Local Security Checks | high |
| 153769 | Ubuntu 20.04 LTS : Linux kernel vulnerabilities (USN-5091-1) | Nessus | Ubuntu Local Security Checks | high |
| 153668 | Debian DSA-4978-1 : linux - security update | Nessus | Debian Local Security Checks | high |
| 153627 | SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2021:3207-1) | Nessus | SuSE Local Security Checks | high |
| 153625 | SUSE SLED12 / SLES12 Security Update : kernel (SUSE-SU-2021:3206-1) | Nessus | SuSE Local Security Checks | high |
| 153622 | SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2021:3205-1) | Nessus | SuSE Local Security Checks | high |
| 153616 | SUSE SLES12 Security Update : kernel (SUSE-SU-2021:3217-1) | Nessus | SuSE Local Security Checks | high |
| 153598 | openSUSE 15 Security Update : kernel (openSUSE-SU-2021:3205-1) | Nessus | SuSE Local Security Checks | high |
| 153581 | SUSE SLES12 Security Update : kernel (SUSE-SU-2021:3192-1) | Nessus | SuSE Local Security Checks | high |
| 153567 | Oracle Linux 7 : Unbreakable Enterprise kernel-container (ELSA-2021-9458) | Nessus | Oracle Linux Local Security Checks | high |
| 153559 | Oracle Linux 7 : Unbreakable Enterprise kernel (ELSA-2021-9460) | Nessus | Oracle Linux Local Security Checks | high |
| 153542 | SUSE SLES15 Security Update : kernel (SUSE-SU-2021:3179-1) | Nessus | SuSE Local Security Checks | high |
| 153541 | openSUSE 15 Security Update : kernel (openSUSE-SU-2021:3179-1) | Nessus | SuSE Local Security Checks | high |
| 153540 | SUSE SLES15 Security Update : kernel (SUSE-SU-2021:3178-1) | Nessus | SuSE Local Security Checks | high |
| 153535 | SUSE SLES15 Security Update : kernel (SUSE-SU-2021:3177-1) | Nessus | SuSE Local Security Checks | high |
| 153499 | Photon OS 3.0: Linux PHSA-2021-3.0-0302 | Nessus | PhotonOS Local Security Checks | medium |
| 152467 | openSUSE 15 Security Update : kernel (openSUSE-SU-2021:1142-1) | Nessus | SuSE Local Security Checks | high |