SB20260812339 - Out-of-bounds read in Linux kernel ath ath6kl driver

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Main Vulnerability Database SB20260812339

SB20260812339 - Out-of-bounds read in Linux kernel ath ath6kl driver

Published: August 12, 2026

Security Bulletin ID SB20260812339
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Out-of-bounds read (CVE-ID: CVE-2026-68199)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to an out-of-bounds access in aggr_recv_addba_req_evt() in the ath6kl wireless driver when processing a firmware-supplied ADDBA window size. A remote attacker can supply a crafted window size value to cause a denial of service.

The issue arises because an out-of-range window size can lead to a zero-size or overflowed allocation before subsequent memory access.


Remediation

Install update from vendor's website.

References