Bug 2315166 (CVE-2024-46815)

Summary: CVE-2024-46815 kernel: drm/amd/display: Check num_valid_sets before accessing reader_wm_sets[]
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 2315303    
Bug Blocks:    

Description OSIDB Bzimport 2024-09-27 13:21:16 UTC 
In the Linux kernel, the following vulnerability has been resolved:

drm/amd/display: Check num_valid_sets before accessing reader_wm_sets[]

[WHY & HOW]
num_valid_sets needs to be checked to avoid a negative index when
accessing reader_wm_sets[num_valid_sets - 1].

This fixes an OVERRUN issue reported by Coverity.
Comment 1 Robb Gatica 2024-09-27 15:31:19 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024092711-CVE-2024-46815-fce2@gregkh/T