Bug 2425015 (CVE-2023-54057)

Summary:	CVE-2023-54057 kernel: iommu/amd: Add a length limitation for the ivrs_acpihid command-line parameter
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	Keywords:	Security
Target Milestone:	---
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Hardware:	All
OS:	Linux
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Doc Text:	A stack buffer overflow vulnerability was found in the Linux kernel's AMD IOMMU driver. The parse_ivrs_acpihid() function uses sscanf() to parse the ivrs_acpihid kernel command-line parameter without specifying a field width limit. An overly long ACPI HID string can overflow the fixed-size acpiid buffer on the stack.	Story Points:	---
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2025-12-24 13:02:06 UTC

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.

Comment 1 Alexander B 2025-12-25 08:43:36 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025122427-CVE-2023-54057-f0c5@gregkh/T