SB2026092584 - Integer underflow in Linux kernel iwlwifi mvm driver
Published: September 25, 2026
Security Bulletin ID
SB2026092584
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Partial DoS
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Integer underflow (CVE-ID: CVE-2026-93792)
CWE-ID: CWE-191 - Integer underflow
CVSSv4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to an integer underflow in the iwl_mvm_report_wakeup_reasons() WoWLAN wakeup-reason packet handling when processing firmware-reported WoWLAN packets with undersized lengths. A local user can trigger processing of a firmware-reported WoWLAN packet with an undersized length to cause a denial of service.
Remediation
Install update from vendor's website.