SB2026091897 - Stack-based buffer overflow in Linux kernel usb misc driver
Published: September 18, 2026
Security Bulletin ID
SB2026091897
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Physical access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Stack-based buffer overflow (CVE-ID: CVE-2026-93119)
CWE-ID: CWE-121 - Stack-based buffer overflow
CVSSv4: 0 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows an attacker with physical access to cause a stack-based buffer overflow.
The vulnerability exists due to a stack-based buffer overflow in the valid_pin array in ljca_enumerate_gpio() when processing device-provided GPIO descriptors. An attacker with physical access can report a bank_num value exceeding the valid_pin array capacity to cause a stack-based buffer overflow.
Remediation
Install update from vendor's website.