SB20251226161 - Use-after-free in Linux kernel gadget udc driver
Published: December 26, 2025 Updated: December 31, 2025
Security Bulletin ID
SB20251226161
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Use-after-free (CVE-ID: CVE-2022-50704)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the usb_gadget_disconnect() function in drivers/usb/gadget/udc/core.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/30e926aa835ac2e6ad05822e4cb75833feb0d99f
- https://git.kernel.org/stable/c/99a58ac42d9b6911834b0224b6782aea0c311346
- https://git.kernel.org/stable/c/afdc12887f2b2ecf20d065a7d81ad29824155083
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.0.16
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.2
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2