Bug 2301482 (CVE-2024-42117)

Summary: CVE-2024-42117 kernel: drm/amd/display: ASSERT when failing to find index by plane/stream id
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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Fixed In Version: kernel 6.9.9, kernel 6.10 Doc Type: If docs needed, set a value
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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: 2301783    
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Description OSIDB Bzimport 2024-07-30 08:32:15 UTC 
In the Linux kernel, the following vulnerability has been resolved:

drm/amd/display: ASSERT when failing to find index by plane/stream id

[WHY]
find_disp_cfg_idx_by_plane_id and find_disp_cfg_idx_by_stream_id returns
an array index and they return -1 when not found; however, -1 is not a
valid index number.

[HOW]
When this happens, call ASSERT(), and return a positive number (which is
fewer than callers' array size) instead.

This fixes 4 OVERRUN and 2 NEGATIVE_RETURNS issues reported by Coverity.
Comment 1 Mauro Matteo Cascella 2024-07-30 19:08:36 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024073023-CVE-2024-42117-25fd@gregkh/T
Comment 2 Mauro Matteo Cascella 2024-07-30 19:08:57 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2301783]