SB20240531393 - NULL pointer dereference in Linux kernel gadget function driver 

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Main Vulnerability Database SB20240531393

SB20240531393 - NULL pointer dereference in Linux kernel gadget function driver

Published: May 31, 2024 Updated: May 14, 2025

Security Bulletin ID SB20240531393
Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Denial of service

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 security vulnerability.


1) NULL pointer dereference (CVE-ID: CVE-2021-47270)

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to NULL pointer dereference within the tcm_bind() function in drivers/usb/gadget/function/f_tcm.c, within the geth_bind() function in drivers/usb/gadget/function/f_subset.c, within the usb_assign_descriptors() function in drivers/usb/gadget/function/f_sourcesink.c, within the gser_bind() function in drivers/usb/gadget/function/f_serial.c, within the rndis_bind() function in drivers/usb/gadget/function/f_rndis.c, within the usb_assign_descriptors() function in drivers/usb/gadget/function/f_printer.c, within the usb_assign_descriptors() function in drivers/usb/gadget/function/f_loopback.c, within the eem_bind() function in drivers/usb/gadget/function/f_eem.c, within the ecm_bind() function in drivers/usb/gadget/function/f_ecm.c. A local user can perform a denial of service (DoS) attack.


Remediation

Install update from vendor's website.

References