CVE-2026-31572 Details
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
A race condition vulnerability has been identified in the Linux kernel I2C Designware AMDISP driver, specifically in version 7.0. This issue arises from a resume-probe race condition, where the AMDISP I2C device, which requires the ISP to be powered on for successful probing, is not properly managed. The problem was introduced in a previous commit that combined initialization functions, but went undetected until now. The race condition leads to a NULL dereference issue during the probing process.
The vulnerability has been addressed by modifying the driver to use the generic power domain APIs directly during the probing process. The updated driver now powers on the ISP before probing, suspends the device after probing, and only enables runtime power management once the device is fully initialized.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/83bcea9da91965484df64a6492b89e65d41ab31c | kernel.org | Patch |
| https://git.kernel.org/stable/c/e2f1ada8e089dd5a331bcd8b88125ae2af8d188f | kernel.org | Patch |
| https://git.kernel.org/stable/c/e81f0341754c309e33babea2821eda8f98f0b44c | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-362 | Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 6.16.1, < 6.18.21 >= 6.19, < 6.19.11 6.16 - 7.0 rc1 7.0 rc2 7.0 rc3 7.0 rc4 7.0 rc5 7.0 rc6 7.0 rc7 |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | kernel.org |
| Apr 27, 2026 | Initial Analysis | [email protected] |
| Apr 24, 2026 | New CVE Received | kernel.org |