What’s Vulnerable › Vulnerabilities

CVE-2021-47522: HID: bigbenff: prevent null pointer dereference

• 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: 2024-05-24 · updated 2026-06-17
• Weakness: CWE-476

Description

In the Linux kernel, the following vulnerability has been resolved: HID: bigbenff: prevent null pointer dereference When emulating the device through uhid, there is a chance we don't have output reports and so report_field is null.

Affected products

• Linux kernel: before 5.4.165; from 5.5 before 5.10.85; from 5.11 before 5.15.8 — fixed in 5.10.85, 5.15.8, 5.4.165

How to fix

Upgrade to a fixed version: Linux kernel 5.10.85, 5.15.8, 5.4.165. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/58f15f5ae7786c824868f3a7e093859b74669ce7
• https://git.kernel.org/stable/c/6272b17001e6fdcf7b4a16206287010a1523fa6e
• https://git.kernel.org/stable/c/8e0ceff632f48175ec7fb4706129c55ca8a7c7bd
• https://git.kernel.org/stable/c/918aa1ef104d286d16b9e7ef139a463ac7a296f0
• https://git.kernel.org/stable/c/58f15f5ae7786c824868f3a7e093859b74669ce7
• https://git.kernel.org/stable/c/6272b17001e6fdcf7b4a16206287010a1523fa6e
• https://git.kernel.org/stable/c/8e0ceff632f48175ec7fb4706129c55ca8a7c7bd
• https://git.kernel.org/stable/c/918aa1ef104d286d16b9e7ef139a463ac7a296f0

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