CVE-2021-47279: usb: misc: brcmstb-usb-pinmap: check return value after calling platform_get_resource()

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: usb: misc: brcmstb-usb-pinmap: check return value after calling platform_get_resource() It will cause null-ptr-deref if platform_get_resource() returns NULL, we need check the return value.

Affected products

Linux kernel: from 5.11 before 5.12.11; 5.13-rc1, 5.13-rc2, 5.13-rc3, 5.13-rc4, 5.13-rc5 — fixed in 5.12.11

How to fix

Upgrade to a fixed version: Linux kernel 5.12.11. Check the vendor advisory for mitigations.

References

https://git.kernel.org/stable/c/2147684be1ebdaf845783139b9bc4eba3fecd9e4
https://git.kernel.org/stable/c/fbf649cd6d64d40c03c5397ecd6b1ae922ba7afc
https://git.kernel.org/stable/c/2147684be1ebdaf845783139b9bc4eba3fecd9e4
https://git.kernel.org/stable/c/fbf649cd6d64d40c03c5397ecd6b1ae922ba7afc

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