Bug 2317599 (CVE-2024-47661)

Summary:	CVE-2024-47661 kernel: drm/amd/display: Avoid overflow from uint32_t to uint8_t
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	dfreiber, drow, jburrell, vkumar
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
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Bug Depends On:	2318112
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Description OSIDB Bzimport 2024-10-09 15:03:02 UTC

In the Linux kernel, the following vulnerability has been resolved:

drm/amd/display: Avoid overflow from uint32_t to uint8_t

[WHAT & HOW]
dmub_rb_cmd's ramping_boundary has size of uint8_t and it is assigned
0xFFFF. Fix it by changing it to uint8_t with value of 0xFF.

This fixes 2 INTEGER_OVERFLOW issues reported by Coverity.

Comment 1 Mauro Matteo Cascella 2024-10-11 16:29:33 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024100930-CVE-2024-47661-a6c1@gregkh/T