SB2026081701 - Out-of-bounds read in Linux kernel wireless

Description

This security bulletin contains information about 1 vulnerability.

1) Out-of-bounds read (CVE-ID: CVE-2026-68472)

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

CVSSv4: 7.1 [CVSS:4.0/AV:A/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 read in cfg80211_gen_new_ie() when processing a malicious EHT multi-link element in an MBSSID beacon. A remote attacker can send a specially crafted beacon frame to cause a denial of service.

The issue is triggered through a malicious access point broadcasting a short EHT MLE that is later reused while building nontransmitted BSS information.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/3b0505e43da8fb5b2a7994c3c3604e5a74692154
• https://git.kernel.org/stable/c/584657c5fc58d7a840623a2fa06331c9661dd0f1
• https://git.kernel.org/stable/c/74e27cd1d98b546fdb276008a83708d062339661