As the BSI is currently reporting, a vulnerability has been found in the Linux kernel. You can read here on news.de which operating systems and products are affected by the vulnerability.
The Federal Office for Security in der Informationstechnik (BSI) reported a security advisory for Linux kernels on March 20th, 2023. The Linux operating system and the product Open Source Linux Kernel are affected by the vulnerability.
The latest manufacturer recommendations regarding updates, workarounds and security patches for this vulnerability can be found here: Github Security Advisory GHSA-rqpf-mw6m-jx7p (Status: 03/19/2023). Other useful links are listed later in this article.
Security Advice for Linux Kernel – Risk: medium
Risk level: 3 (medium)
CVSS Base Score: 5,3
CVSS Temporal Score: 4,6
Remote Attack: No
The Common Vulnerability Scoring System (CVSS) is used to assess the severity of vulnerabilities in computer systems. The CVSS standard makes it possible to compare potential or actual security vulnerabilities based on various metrics in order to better prioritize countermeasures. The attributes “none”, “low”, “medium”, “high” and “critical” are used for the severity of a vulnerability. The base score assesses the prerequisites for an attack (including authentication, complexity, privileges, user interaction) and its consequences. With the temporal score, framework conditions that change over time are included in the evaluation. According to the CVSS, the risk of the current vulnerability is rated as “medium” with a base score of 5.3.
Linux Kernel Bug: Multiple vulnerabilities allow unspecified attack
The kernel represents the core of the Linux operating system.
A local attacker can exploit several vulnerabilities in the Linux kernel to perform an unspecified attack.
The vulnerability is identified with the unique CVE identification numbers (Common Vulnerabilities and Exposures) CVE-2022-48424 and CVE-2022-48423 traded.
Systems affected by the vulnerability at a glance
Open Source Linux Kernel < 6.1.3 (cpe:/o:linux:linux_kernel)
General recommendations for dealing with IT vulnerabilities
Users of the affected applications should keep them up to date. When security vulnerabilities become known, manufacturers are required to remedy them as quickly as possible by developing a patch or a workaround. If new security updates are available, install them promptly.
For information, consult the sources listed in the next section. These often contain further information on the latest version of the software in question and the availability of security patches or tips on workarounds.
If you have any further questions or are uncertain, please contact your responsible administrator. IT security managers should regularly check when the manufacturing company makes a new security update available.
Sources for updates, patches and workarounds
Here you will find further links with information about bug reports, security fixes and workarounds.
Github Security Advisory GHSA-rqpf-mw6m-jx7p vom 2023-03-19 (20.03.2023)
For more information, see: https://github.com/advisories/GHSA-rqpf-mw6m-jx7p
Github Security Advisory GHSA-V3FG-QXXF-34W3 vom 2023-03-19 (20.03.2023)
For more information, see: https://github.com/advisories/GHSA-V3FG-QXXF-34W3
Version history of this security alert
This is the initial version of this IT security notice for Linux kernels. As updates are announced, this text will be updated. You can read about changes or additions in this version history.
03/20/2023 – Initial version
+++ Editorial note: This text was created with AI support based on current BSI data. We accept feedback and comments at [email protected]. +++
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