SB20261015102 - Reachable assertion in Linux kernel mac80211

Description

This security bulletin contains information about 1 vulnerability.

1) Reachable assertion (CVE-ID: CVE-2026-98425)

CWE-ID: CWE-617 - Reachable Assertion

CVSSv4: 0 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a local user to trigger a kernel warning.

The vulnerability exists due to an unnecessary warning assertion in ieee80211_request_ibss_scan() when requesting an IBSS scan with no channels permitted by the current regulatory domain. A local user can request a scan under this condition to trigger a kernel warning.

The regulatory domain can change while an IBSS is operating, and the IBSS can continue operating briefly during a 60-second grace period before shutdown.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/23d51c0bc18f21d957756ba4650520bb3bc726b2
• https://git.kernel.org/stable/c/5f139e17f5bdba6b68177dd8afe13fa4549dfc5f
• https://git.kernel.org/stable/c/a7491b7efbd9136b120a12ed72af9c12121dd134
• https://git.kernel.org/stable/c/bb91c15953705445778c170a2523f12351c4d928