SB20260912253 - Integer underflow in Linux kernel ath ath6kl driver
Published: September 12, 2026
Security Bulletin ID
SB20260912253
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Adjecent network
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Integer underflow (CVE-ID: CVE-2026-89524)
CWE-ID: CWE-191 - Integer underflow
CVSSv4: 5.3 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to an integer underflow in ath6kl_cfg80211_connect_event() when handling association events with request or response lengths shorter than their fixed information element offsets. A remote attacker can trigger such an association event to disclose sensitive information.
Remediation
Install update from vendor's website.