What’s Vulnerable › Vulnerabilities

CVE-2021-47233: regulator: rt4801: Fix NULL pointer dereference if priv->enable_gpios is NULL

• 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: 2024-05-21 · updated 2026-06-17
• Weakness: CWE-476

Description

In the Linux kernel, the following vulnerability has been resolved: regulator: rt4801: Fix NULL pointer dereference if priv->enable_gpios is NULL devm_gpiod_get_array_optional may return NULL if no GPIO was assigned.

Affected products

• Linux kernel: before 5.10.46; from 5.11 before 5.12.13; 5.13-rc1, 5.13-rc2, 5.13-rc3, 5.13-rc4, 5.13-rc5 — fixed in 5.10.46, 5.12.13

How to fix

Upgrade to a fixed version: Linux kernel 5.10.46, 5.12.13. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/ba8a26a7ce8617f9f3d6230de34b2302df086b41
• https://git.kernel.org/stable/c/cb2381cbecb81a8893b2d1e1af29bc2e5531df27
• https://git.kernel.org/stable/c/dc68f0c9e4a001e02376fe87f4bdcacadb27e8a1
• https://git.kernel.org/stable/c/ba8a26a7ce8617f9f3d6230de34b2302df086b41
• https://git.kernel.org/stable/c/cb2381cbecb81a8893b2d1e1af29bc2e5531df27
• https://git.kernel.org/stable/c/dc68f0c9e4a001e02376fe87f4bdcacadb27e8a1

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