Linux Kernel up to 5.15.23/5.16.9 ima asymmetric_verify denial of service

Summaryinfo

A vulnerability was found in Linux Kernel up to 5.15.23/5.16.9 and classified as critical. This issue affects the function asymmetric_verify of the component ima. Executing a manipulation can lead to denial of service. This vulnerability is registered as CVE-2022-48831. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Linux Kernel up to 5.15.23/5.16.9 and classified as critical. This vulnerability affects the function asymmetric_verify of the component ima. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: ima: fix reference leak in asymmetric_verify() Don't leak a reference to the key if its algorithm is unknown.

The advisory is shared for download at git.kernel.org. This vulnerability was named CVE-2022-48831 since 07/16/2024. There are known technical details, but no exploit is available.

Upgrading to version 5.15.24 or 5.16.10 eliminates this vulnerability. Applying the patch 0838d6d68182/89f586d3398f/926fd9f23b27 is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at CERT Bund (WID-SEC-2024-1625). Once again VulDB remains the best source for vulnerability data.

Affected

• Amazon Linux 2
• Red Hat Enterprise Linux
• Ubuntu Linux
• SUSE Linux
• Oracle Linux
• Oracle VM
• RESF Rocky Linux
• Open Source Linux Kernel
• Broadcom Brocade SANnav
• IBM QRadar SIEM
• Dell PowerProtect Data Domain
• Dell PowerProtect Data Domain Management Center
• Dell PowerProtect Data Domain OS

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 5.15.0
• 5.15.1
• 5.15.2
• 5.15.3
• 5.15.4
• 5.15.5
• 5.15.6
• 5.15.7
• 5.15.8
• 5.15.9
• 5.15.10
• 5.15.11
• 5.15.12
• 5.15.13
• 5.15.14
• 5.15.15
• 5.15.16
• 5.15.17
• 5.15.18
• 5.15.19
• 5.15.20
• 5.15.21
• 5.15.22
• 5.15.23
• 5.16.0
• 5.16.1
• 5.16.2
• 5.16.3
• 5.16.4
• 5.16.5
• 5.16.6
• 5.16.7
• 5.16.8
• 5.16.9

License

• open-source

Website

• Vendor: https://www.kernel.org/

CPE 2.3info

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CPE 2.2info

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Once again VulDB remains the best source for vulnerability data.

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