Linux Kernel: IT security warning about new bug

As the BSI currently reports, vulnerabilities have been identified for the Linux kernel. You can read a description of the security vulnerabilities and a list of the affected operating systems and products here.

The Federal Office for Security in Information Technology (BSI) reported a security advisory for the Linux kernel on February 22, 2024. Several vulnerabilities have been discovered in the application of this software that can be exploited by attackers. The security vulnerability affects the Linux operating system and the Open Source Linux Kernel product.

The latest manufacturer recommendations regarding updates, workarounds and security patches for this vulnerability can be found here: GitHub Advisory Database (As of February 22, 2024). Other useful resources are listed later in this article.

Multiple Linux Kernel Vulnerabilities Reported – Risk: Medium

Risk level: 3 (medium)
CVSS Base Score: 5,5
CVSS Temporal Score: 4,8
Remote attack: No

The Common Vulnerability Scoring System (CVSS) is used to assess the vulnerability of computer systems. The CVSS standard makes it possible to compare potential or actual security vulnerabilities based on various criteria in order to create a priority list for taking countermeasures. The attributes “none”, “low”, “medium”, “high” and “critical” are used to determine the severity levels of a vulnerability. The Base Score evaluates the requirements for an attack (including authentication, complexity, privileges, user interaction) and its consequences. With the temporal score, framework conditions that can change over time are taken into account in the evaluation. The severity of the vulnerability discussed here is classified as “medium” according to the CVSS with a base score of 5.5.

Linux Kernel Bug: Summary of current vulnerabilities

The kernel represents the core of the Linux operating system.

A local attacker can exploit multiple vulnerabilities in the Linux kernel to cause a denial of service or conduct an unspecified attack.

The vulnerabilities were classified using the CVE designation system (Common Vulnerabilities and Exposures) by their individual serial numbers CVE-2024-26592, CVE-2024-26591, CVE-2024-26590, CVE-2024-26589, CVE-2024-26588, CVE-2024-26587, CVE-2024-26586, CVE-2023-52452, CVE-2023-52451, CVE-2023-52450, CVE-2023-52449, CVE-2023-52448, CVE-2023-52447, CVE-2023-52446, CVE-2023-52445, CVE-2023-52444 und CVE-2023-52443.

Systems affected by the security gap at a glance

operating system
Linux

Products
Open Source Linux Kernel

General recommendations for dealing with IT vulnerabilities

Users of the affected applications should keep them up to date. When security gaps become known, manufacturers are required to fix them as quickly as possible by developing a patch or a workaround. If security patches are available, install them promptly. For information, consult the sources listed in the next section. These often contain further information about the latest version of the software in question as well as the availability of security patches or information about workarounds. If you have any further questions or uncertainties, please contact your responsible administrator. IT security managers should regularly check when the IT security warning Affected manufacturers provide a new security update.

Manufacturer information on updates, patches and workarounds

Here you will find further links with information about bug reports, security fixes and workarounds.

GitHub Advisory Database vom 2024-02-22 (22.02.2024)
For more information, see: