What’s Vulnerable › Vulnerabilities

CVE-2022-49449: pinctrl: renesas: rzn1: Fix possible null-ptr-deref in sh_pfc_map_resources()

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-02-26 · updated 2026-06-17
• Weakness: CWE-476

Description

In the Linux kernel, the following vulnerability has been resolved: pinctrl: renesas: rzn1: Fix possible null-ptr-deref in sh_pfc_map_resources() It will cause null-ptr-deref when using 'res', if platform_get_resource() returns NULL, so move using 'res' after devm_ioremap_resource() that will check it to avoid null-ptr-deref. And use devm_platform_get_and_ioremap_resource() to simplify code.

Affected products

• Linux kernel: before 5.10.121; from 5.11 before 5.15.46; from 5.16 before 5.17.14; from 5.18 before 5.18.3 — fixed in 5.10.121, 5.15.46, 5.17.14, 5.18.3

How to fix

Upgrade to a fixed version: Linux kernel 5.10.121, 5.15.46, 5.17.14, 5.18.3. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/01f9e02e0f13df3fd291676dc80054e977be1601
• https://git.kernel.org/stable/c/2f661477c2bb8068194dbba9738d05219f111c6e
• https://git.kernel.org/stable/c/34c719b8fdfbd0c7c54cae56e6b0f16e9f8bf03e
• https://git.kernel.org/stable/c/b646e0cfeb38bf5f1944fd548f1dfa9b129fa00c
• https://git.kernel.org/stable/c/c16b59d445135c8026a04e388d8b2762feaa3b3b

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