#VU116540 NULL pointer dereference in Linux kernel - CVE-2023-53551
Published: October 5, 2025 / Updated: October 27, 2025
Vulnerability identifier: #VU116540
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2023-53551
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the gserial_disconnect() and EXPORT_SYMBOL_GPL() functions in drivers/usb/gadget/function/u_serial.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's repository.
External links
- https://git.kernel.org/stable/c/3b24c980dc07be4550a9d1450ed7057f882530e5
- https://git.kernel.org/stable/c/44e004f757a7ae13dfebaadbcfdb1a6f98c10377
- https://git.kernel.org/stable/c/5ec63fdbca604568890c577753c6f66c5b3ef0b5
- https://git.kernel.org/stable/c/c5360eec648bd506afa304ae4a71f82e13d41897
- https://git.kernel.org/stable/c/ec357cd3e8af614855d286dd378725cdc7264df6
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.15