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CVE-2022-50734: nvmem: core: Fix memleak in nvmem_register()

• Severity: unknown
• 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: 2025-12-24 · updated 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: nvmem: core: Fix memleak in nvmem_register() dev_set_name will alloc memory for nvmem->dev.kobj.name in nvmem_register, when nvmem_validate_keepouts failed, nvmem's memory will be freed and return, but nobody will free memory for nvmem->dev.kobj.name, there will be memleak, so moving nvmem_validate_keepouts() after device_register() and let the device core deal with cleaning name in error cases.

Affected products

• Linux kernel: from 5.13.19 before 5.14; from 5.14.6 before 5.15; 5.15 — fixed in 5.14, 5.15, 6.1

How to fix

Upgrade to a fixed version: Linux kernel 5.14, 5.15, 6.1. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/2bd2774df0ce37920b23819a860a66fdbdd90823
• https://git.kernel.org/stable/c/9391cc3a787a58aa224a6440d7f244d780ba2896
• https://git.kernel.org/stable/c/b6054b9b239a493672f853b034570cca93ba7a88
• https://git.kernel.org/stable/c/bd1244561fa2a4531ded40dbf09c9599084f8b29

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