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Linux kernel at risk: IT security warning about new bug

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Linux kernel at risk: IT security warning about new bug

The BSI has issued a current IT security advisory for the Linux kernel. You can find out more about the affected operating systems and products as well as CVE numbers here on news.de.

The Federal Office for Security in Information Technology (BSI) reported a security advisory for the Linux kernel on February 27, 2024. 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: CVE Announcement on lore.kernel.org (As of February 27, 2024). Other useful resources are listed later in this article.

Linux Kernel Security Advisory – 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 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. The temporal score also takes changes over time in the danger situation into account. According to the CVSS, the threat of the current vulnerability is assessed 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.

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A local attacker can exploit multiple vulnerabilities in the Linux kernel to carry out an unspecified attack.

The vulnerability is identified with the individual CVE (Common Vulnerabilities and Exposures) serial numbers. CVE-2021-47053, CVE-2021-47052, CVE-2021-47051, CVE-2021-47050, CVE-2021-47049, CVE-2021-47048, CVE-2021-47047, CVE-2021-47046, CVE-2021-47045, CVE-2021-47044, CVE-2021-47043, CVE-2021-47042, CVE-2021-47041, CVE-2021-47040, CVE-2021-47039, CVE-2021-47038, CVE-2021-47037, CVE-2021-47019, CVE-2021-47018, CVE-2021-47017, CVE-2021-47015, CVE-2021-47014, CVE-2021-47013, CVE-2021-47012 und CVE-2021-47009 traded.

Systems affected by the security gap at a glance

operating system
Linux

Products
Open Source Linux Kernel

General recommendations for dealing with IT security gaps

Users of the affected systems 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 new security updates become 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 the sources mentioned to see whether a new security update is available.

Sources of updates, patches and workarounds

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

CVE Announcement on lore.kernel.org dated 2024-02-27 (27.02.2024)
For more information, see:

CVE Announcement on lore.kernel.org dated 2024-02-27 (27.02.2024)
For more information, see:

CVE Announcement on lore.kernel.org dated 2024-02-27 (27.02.2024)
For more information, see:

CVE Announcement on lore.kernel.org dated 2024-02-27 (27.02.2024)
For more information, see:

CVE Announcement on lore.kernel.org dated 2024-02-27 (27.02.2024)
For more information, see:

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CVE Announcement on lore.kernel.org dated 2024-02-27 (27.02.2024)
For more information, see:

CVE Announcement on lore.kernel.org dated 2024-02-27 (27.02.2024)
For more information, see:

CVE Announcement on lore.kernel.org dated 2024-02-27 (27.02.2024)
For more information, see:

CVE Announcement on lore.kernel.org dated 2024-02-27 (27.02.2024)
For more information, see:

CVE Announcement on lore.kernel.org dated 2024-02-27 (27.02.2024)
For more information, see:

CVE Announcement on lore.kernel.org dated 2024-02-27 (27.02.2024)
For more information, see:

CVE Announcement on lore.kernel.org dated 2024-02-27 (27.02.2024)
For more information, see:

CVE Announcement on lore.kernel.org dated 2024-02-27 (27.02.2024)
For more information, see:

CVE Announcement on lore.kernel.org dated 2024-02-27 (27.02.2024)
For more information, see:

CVE Announcement on lore.kernel.org dated 2024-02-27 (27.02.2024)
For more information, see:

CVE Announcement on lore.kernel.org dated 2024-02-27 (27.02.2024)
For more information, see:

CVE Announcement on lore.kernel.org dated 2024-02-27 (27.02.2024)
For more information, see:

CVE Announcement on lore.kernel.org dated 2024-02-27 (27.02.2024)
For more information, see:

CVE Announcement on lore.kernel.org dated 2024-02-27 (27.02.2024)
For more information, see:

CVE Announcement on lore.kernel.org dated 2024-02-27 (27.02.2024)
For more information, see:

CVE Announcement on lore.kernel.org dated 2024-02-27 (27.02.2024)
For more information, see:

CVE Announcement on lore.kernel.org dated 2024-02-27 (27.02.2024)
For more information, see:

CVE Announcement on lore.kernel.org dated 2024-02-27 (27.02.2024)
For more information, see:

CVE Announcement on lore.kernel.org dated 2024-02-27 (27.02.2024)
For more information, see:

CVE Announcement on lore.kernel.org dated 2024-02-27 (27.02.2024)
For more information, see:

CVE Announcement on lore.kernel.org dated 2024-02-27 (27.02.2024)
For more information, see:

Version history of this security alert

This is the initial version of this IT security notice for the Linux kernel. If updates are announced, this text will be updated. You can see the changes made using the version history below.

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02/27/2024 – Initial version

+++ Editorial note: This text was generated based on current BSI data and will be updated in a data-driven manner depending on the warning situation. We accept feedback and comments at [email protected]. +++

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Edited by kns

roj/news.de

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