SB20260812173 - Out-of-bounds read in Linux kernel ath ath6kl driver
Published: August 12, 2026
Security Bulletin ID
SB20260812173
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Out-of-bounds read (CVE-ID: CVE-2026-68353)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a local user to disclose sensitive information.
The vulnerability exists due to an out-of-bounds read in ath6kl_wmi_tx_complete_event_rx() when processing a crafted WMI TX complete event from firmware. A local user can supply an inflated num_msg field to disclose sensitive information.
The num_msg field is firmware-controlled and can cause reads of up to 1020 bytes past the WMI event buffer.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/289edc3c71344b89e6522891147cfb8f61b088bb
- https://git.kernel.org/stable/c/3a21c89215cc18f1a97c5e5bfd1da6d4f3d44495
- https://git.kernel.org/stable/c/69ac7ba3a3df6654e7daa82674575a8c4a1a63ea
- https://git.kernel.org/stable/c/c38b0d5c661951b5dd082bdf31f8a57a0ce6e540
- https://git.kernel.org/stable/c/eb636fbc443149b3501c3f97e26225ddcb314a0f