Linux Kernel up to 6.2.2 iommu sscanf acpiid format string

Summaryinfo

A vulnerability classified as critical has been found in Linux Kernel up to 5.4.236/5.10.174/5.15.102/6.1.15/6.2.2. This vulnerability affects the function sscanf of the component iommu. This manipulation of the argument acpiid causes format string. This vulnerability is registered as CVE-2023-54057. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Linux Kernel up to 5.4.236/5.10.174/5.15.102/6.1.15/6.2.2 and classified as critical. Affected by this vulnerability is the function sscanf of the component iommu. The manipulation of the argument acpiid with an unknown input leads to a format string vulnerability. The CWE definition for the vulnerability is CWE-134. The product uses a function that accepts a format string as an argument, but the format string originates from an external source. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: iommu/amd: Add a length limitation for the ivrs_acpihid command-line parameter The 'acpiid' buffer in the parse_ivrs_acpihid function may overflow, because the string specifier in the format string sscanf() has no width limitation. Found by InfoTeCS on behalf of Linux Verification Center (linuxtesting.org) with SVACE.

The advisory is shared at git.kernel.org. This vulnerability is known as CVE-2023-54057 since 12/24/2025. The exploitation appears to be easy. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 12/30/2025).

The vulnerability scanner Nessus provides a plugin with the ID 279948 (Linux Distros Unpatched Vulnerability : CVE-2023-54057), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.4.237, 5.10.175, 5.15.103, 6.1.16 or 6.2.3 eliminates this vulnerability. Applying the patch 5e97dc748d13fad582136ba0c8cec215c7aeeb17/f2a5ec7f7b28f9b9cd5fac232ff51019a7f7b9e9/c513043e0afe6a8ba79d00af358655afabb576d2/2ae19ac3ea82a5b87a81c10adbb497c9e58bdd60/63cd11165e5e0ea2012254c764003eda1f9adb7d/b6b26d86c61c441144c72f842f7469bb686e1211 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 databases at Tenable (279948) and CERT Bund (WID-SEC-2025-2929). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Affected

• Open Source Linux Kernel

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 5.4.236
• 5.10.174
• 5.15.102
• 6.1.0
• 6.1.1
• 6.1.2
• 6.1.3
• 6.1.4
• 6.1.5
• 6.1.6
• 6.1.7
• 6.1.8
• 6.1.9
• 6.1.10
• 6.1.11
• 6.1.12
• 6.1.13
• 6.1.14
• 6.1.15
• 6.2.0
• 6.2.1
• 6.2.2

License

• open-source

Website

• Vendor: https://www.kernel.org/

CPE 2.3info

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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