CVE-2026-89524 Linux Kernel - Information Disclosure

Linux kernel contains an information disclosure vulnerability in ath6kl_cfg80211_connect_event() caused by underflow of assoc request/response lengths due to missing lower bound checks, letting attackers disclose adjacent slab memory, exploit requires crafted assoc request/response.

CVSS base score 8.1 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.27% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Information Disclosure
Impact
Information Disclosure
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Published
11 September 2026
Updated
15 October 2026

Vendor fix

Update to the latest Linux kernel version with the fix applied.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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