SB2025100168 - Integer underflow in Linux kernel i2c busses driver
Published: October 1, 2025
Security Bulletin ID
SB2025100168
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) Integer underflow (CVE-ID: CVE-2025-39928)
The vulnerability allows a local user to execute arbitrary code.
The vulnerability exists due to integer underflow within the rtl9300_i2c_config_xfer() function in drivers/i2c/busses/i2c-rtl9300.c. A local user can execute arbitrary code.
Remediation
Install update from vendor's website.