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CVE-2021-47522

HID: bigbenff: prevent null pointer dereference

MEDIUM
5.5
CVSS Score
Published: May 24, 2024 at 03:09 PM UTC
Updated: June 17, 2026 at 04:17 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
95%
v < 5.4.1654.20 ≤ v < 5.10.854.20 ≤ v < 5.15.84.20 ≤ v < 5.164.20 ≤ v < 5.4.1655.11 ≤ v < 5.15.85.5 ≤ v < 5.10.85256a90ed9e46b270bbc4e15ef05216ff049c37214.20
Vendor states this is fixed in 58f15f5ae7786c824868f3a7e093859b74669ce7 (fixed)
Vendor states this is fixed in 6272b17001e6fdcf7b4a16206287010a1523fa6e (fixed)
Vendor states this is fixed in 8e0ceff632f48175ec7fb4706129c55ca8a7c7bd (fixed)
Vendor states this is fixed in 918aa1ef104d286d16b9e7ef139a463ac7a296f0 (fixed)
Vendor states this is fixed in 4.20 (unaffected)
Vendor states this is fixed in 5.10.85 (unaffected)
Vendor states this is fixed in 5.15.8 (unaffected)
Vendor states this is fixed in 5.16 (unaffected)
Vendor states this is fixed in 5.4.165 (unaffected)

References (4)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/58f15f5ae7786c824868f3a7e093859b74669ce7
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/6272b17001e6fdcf7b4a16206287010a1523fa6e
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/8e0ceff632f48175ec7fb4706129c55ca8a7c7bd
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/918aa1ef104d286d16b9e7ef139a463ac7a296f0

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.5MEDIUM[email protected]
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-476

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