Bug 2338846 (CVE-2024-57910)

Summary: CVE-2024-57910 kernel: iio: light: vcnl4035: fix information leak in triggered buffer
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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Description OSIDB Bzimport 2025-01-19 12:01:57 UTC 
In the Linux kernel, the following vulnerability has been resolved:

iio: light: vcnl4035: fix information leak in triggered buffer

The 'buffer' local array is used to push data to userspace from a
triggered buffer, but it does not set an initial value for the single
data element, which is an u16 aligned to 8 bytes. That leaves at least
4 bytes uninitialized even after writing an integer value with
regmap_read().

Initialize the array to zero before using it to avoid pushing
uninitialized information to userspace.
Comment 1 Avinash Hanwate 2025-01-20 05:28:35 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025011938-CVE-2024-57910-e4e0@gregkh/T