CVE-2026-98889 (CVSS 7.8)

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.

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CVSS v3.1 Score

7.8

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploit Prediction

0.0017

Probability of exploitation

0.06%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

References

Other References

https://git.kernel.org/stable/c/05f79cea3b15cfe600b205ddcfd51ebee15d908a https://git.kernel.org/stable/c/0a63f98e5163a2ec2822dfb691ee5a6094de08ec https://git.kernel.org/stable/c/358eca9a898ad4cce7453e9dcfd005d019a2b01f https://git.kernel.org/stable/c/4f155d262b31b9b17e0f9856bdabe0968eb4930f https://git.kernel.org/stable/c/a24417478f90e9f1a4ea24cd4b784afccb56fbae https://git.kernel.org/stable/c/f2268060e99f94314b9988dfa17393c2694fa9b2

Frequently Asked Questions

What is CVE-2026-98889? +

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. It has a CVSS v3.1 base score of 7.8 (HIGH).

How severe is CVE-2026-98889? +

CVE-2026-98889 has a CVSS v3.1 score of 7.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0017, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-98889? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

CVE-2026-98889