Bug 2327191 (CVE-2024-50287)

Summary: CVE-2024-50287 kernel: media: v4l2-tpg: prevent the risk of a division by zero
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Priority: low    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
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Hardware: All   
OS: Linux   
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Bug Depends On: 2327228    
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Description OSIDB Bzimport 2024-11-19 02:02:54 UTC 
In the Linux kernel, the following vulnerability has been resolved:

media: v4l2-tpg: prevent the risk of a division by zero

As reported by Coverity, the logic at tpg_precalculate_line()
blindly rescales the buffer even when scaled_witdh is equal to
zero. If this ever happens, this will cause a division by zero.

Instead, add a WARN_ON_ONCE() to trigger such cases and return
without doing any precalculation.
Comment 1 Avinash Hanwate 2024-11-19 04:54:44 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024111949-CVE-2024-50287-bf9b@gregkh/T