Bug 2298193 (CVE-2022-48852)

Summary: CVE-2022-48852 kernel: drm/vc4: hdmi: Unregister codec device on unbind
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   
Whiteboard:
Fixed In Version: kernel 5.15.29, kernel 5.16.15, kernel 5.17 Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in Unbind. On Bind, the HDMI codec device is registered but not unregistered on Unbind, leading to a device leakage.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2024-07-16 13:24:50 UTC 
In the Linux kernel, the following vulnerability has been resolved:

drm/vc4: hdmi: Unregister codec device on unbind

On bind we will register the HDMI codec device but we don't unregister
it on unbind, leading to a device leakage. Unregister our device at
unbind.