# CVE-2026-31572

> Vulnerability · severity: **MEDIUM** (CVSS 4.7).

## Description

In the Linux kernel, the following vulnerability has been resolved:

i2c: designware: amdisp: Fix resume-probe race condition issue

Identified resume-probe race condition in kernel v7.0 with the commit
38fa29b01a6a ("i2c: designware: Combine the init functions"),but this
issue existed from the beginning though not detected.

The amdisp i2c device requires ISP to be in power-on state for probe
to succeed. To meet this requirement, this device is added to genpd
to control ISP power using runtime PM. The pm_runtime_get_sync() called
before i2c_dw_probe() triggers PM resume, which powers on ISP and also
invokes the amdisp i2c runtime resume before the probe completes resulting
in this race condition and a NULL dereferencing issue in v7.0

Fix this race condition by using the genpd APIs directly during probe:
  - Call dev_pm_genpd_resume() to Power ON ISP before probe
  - Call dev_pm_genpd_suspend() to Power OFF ISP after probe
  - Set the device to suspended state with pm_runtime_set_suspended()
  - Enable runtime PM only after the device is fully initialized

## Key facts

- **CVE ID:** CVE-2026-31572
- **Published:** 2026-04-24
- **CVSS severity:** MEDIUM
- **CVSS base score:** 4.7
- **CWE codes:** CWE-362

## Affected products

- `linux:linux_kernel`

## Primary sources

- NIST NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-31572

## Citation

> AI Analytics. CVE-2026-31572. Retrieved 2026-07-24 from https://api.ai-analytics.org/cve/CVE-2026-31572. Derived from NIST NVD. Licensed CC0.

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