What’s Vulnerable › Vulnerabilities

CVE-2021-47067: soc/tegra: regulators: Fix locking up when voltage-spread is out of range

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-02-29 · updated 2026-06-17
• Weakness: CWE-667

Description

In the Linux kernel, the following vulnerability has been resolved: soc/tegra: regulators: Fix locking up when voltage-spread is out of range Fix voltage coupler lockup which happens when voltage-spread is out of range due to a bug in the code. The max-spread requirement shall be accounted when CPU regulator doesn't have consumers. This problem is observed on Tegra30 Ouya game console once system-wide DVFS is enabled in a device-tree.

Affected products

• Linux kernel: from 5.5 before 5.10.37; from 5.11 before 5.11.21; from 5.12 before 5.12.4 — fixed in 5.10.37, 5.11.21, 5.12.4

How to fix

Upgrade to a fixed version: Linux kernel 5.10.37, 5.11.21, 5.12.4. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/a1ad124c836816fac8bd5e461d36eaf33cee4e24
• https://git.kernel.org/stable/c/dc4452867200fa94589b382740952b58aa1c3e6c
• https://git.kernel.org/stable/c/ef85bb582c41524e9e68dfdbde48e519dac4ab3d
• https://git.kernel.org/stable/c/ff39adf5d31c72025bba799aec69c5c86d81d549
• https://git.kernel.org/stable/c/a1ad124c836816fac8bd5e461d36eaf33cee4e24
• https://git.kernel.org/stable/c/dc4452867200fa94589b382740952b58aa1c3e6c
• https://git.kernel.org/stable/c/ef85bb582c41524e9e68dfdbde48e519dac4ab3d
• https://git.kernel.org/stable/c/ff39adf5d31c72025bba799aec69c5c86d81d549

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