SB2022101504 - Denial of service in Linux kernel USB subsystem
Published: October 15, 2022
Security Bulletin ID
SB2022101504
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Physical access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Race condition (CVE-ID: CVE-2022-41849)
The vulnerability allows an attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a race condition in the drivers/video/fbdev/smscufx.c in the Linux kernel. An attacker with physical proximity to the system can remove the USB device while calling open(), cause a race condition between the ufx_ops_open and ufx_usb_disconnect and perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.