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CVE-2021-47331

usb: common: usb-conn-gpio: fix NULL pointer dereference of charger

MEDIUM
5.5
CVSS Score
Published: May 21, 2024 at 02:35 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: usb: common: usb-conn-gpio: fix NULL pointer dereference of charger When power on system with OTG cable, IDDIG's interrupt arises before the charger registration, it will cause a NULL pointer dereference, fix the issue by registering the power supply before requesting IDDIG/VBUS irq.

Affected

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

Linux Kernel· Linux
95%
v < 5.10.525.11 ≤ v < 5.12.195.13 ≤ v < 5.13.45.9 ≤ v < 5.10.525.9 ≤ v < 5.12.195.9 ≤ v < 5.13.45.9 ≤ v < 5.145.9e3ee0e740c3887d2293e8d54a8707218d70d86ca
Vendor states this is fixed in 1a133a0996d6b4c83509d570ed4edcba34c44f25 (fixed)
Vendor states this is fixed in 436906fd248e018403bcda61a9311d9af02912f1 (fixed)
Vendor states this is fixed in 880287910b1892ed2cb38977893b947382a09d21 (fixed)
Vendor states this is fixed in 8e8d910e9a3a7fba86140aff4924c30955ab228b (fixed)
Vendor states this is fixed in 5.10.52 (unaffected)
Vendor states this is fixed in 5.12.19 (unaffected)
Vendor states this is fixed in 5.13.4 (unaffected)
Vendor states this is fixed in 5.14 (unaffected)
Vendor states this is fixed in 5.9 (unaffected)

References (4)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/1a133a0996d6b4c83509d570ed4edcba34c44f25
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/436906fd248e018403bcda61a9311d9af02912f1
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/880287910b1892ed2cb38977893b947382a09d21
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/8e8d910e9a3a7fba86140aff4924c30955ab228b

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

StatusANALYZED
CWE
CWE-476

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