Bug 2320464 (CVE-2024-49892)

Summary: CVE-2024-49892 kernel: drm/amd/display: Initialize get_bytes_per_element's default to 1
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Priority: medium    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
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Hardware: All   
OS: Linux   
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Bug Depends On: 2320805    
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Description OSIDB Bzimport 2024-10-21 19:03:45 UTC 
In the Linux kernel, the following vulnerability has been resolved:

drm/amd/display: Initialize get_bytes_per_element's default to 1

Variables, used as denominators and maybe not assigned to other values,
should not be 0. bytes_per_element_y & bytes_per_element_c are
initialized by get_bytes_per_element() which should never return 0.

This fixes 10 DIVIDE_BY_ZERO issues reported by Coverity.
Comment 1 Robb Gatica 2024-10-21 22:25:16 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024102118-CVE-2024-49892-b04d@gregkh/T