SB2025100515 - NULL pointer dereference in Linux kernel gadget function driver
Published: October 5, 2025 Updated: October 27, 2025
Security Bulletin ID
SB2025100515
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) NULL pointer dereference (CVE-ID: CVE-2023-53551)
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 website.
References
- 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