CVE-2026-98889 wifi: iwlwifi: mvm: fix sched scan IE sizing
- Exploited in the wild
- Not known
- Fix
- Available
What is CVE-2026-98889?
CVE-2026-98889 is a high-severity vulnerability in Linux, published on 23 Oct 2026.
Official description
In the Linux kernel, the following vulnerability has been resolved:
wifi: iwlwifi: mvm: fix sched scan IE sizing
Scheduled scan built the probe request before iwl_mvm_scan_fits(), so oversized IEs could be copied into the fixed preq buffer before length validation. Move iwl_mvm_build_scan_probe() after the fits check.
Also advertise max_sched_scan_ie_len using iwl_mvm_max_scan_ie_len() so userspace limits account for driver-inserted DS/TPC bytes.
Which versions are affected by CVE-2026-98889?
How do I fix CVE-2026-98889?
Upgrade to a fixed version.
Is CVE-2026-98889 being exploited?
There is no known exploitation of CVE-2026-98889 in the wild and no public exploit code.
Sources
Also known as AZL-110632, BELL-CVE-2026-98889, DEBIAN-CVE-2026-98889, GHSA-2587-vvww-5v6h, UBUNTU-CVE-2026-98889.