What’s Vulnerable › Vulnerabilities

CVE-2022-49448: soc: bcm: Check for NULL return of devm_kzalloc()

• 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: soc: bcm: Check for NULL return of devm_kzalloc() As the potential failure of allocation, devm_kzalloc() may return NULL. Then the 'pd->pmb' and the follow lines of code may bring null pointer dereference. Therefore, it is better to check the return value of devm_kzalloc() to avoid this confusion.

Affected products

• Linux kernel: from 5.12 before 5.15.46; from 5.16 before 5.17.14; from 5.18 before 5.18.3 — fixed in 5.15.46, 5.17.14, 5.18.3

How to fix

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

References

• https://git.kernel.org/stable/c/36339ea7bae4943be01c8e9545e46e334591fecd
• https://git.kernel.org/stable/c/5650e103bfc70156001615861fb8aafb3947da6e
• https://git.kernel.org/stable/c/b48b98743b568bb219152ba2e15af6ef0d3d8a9b
• https://git.kernel.org/stable/c/b4bd2aafacce48db26b0a213d849818d940556dd

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