SB2026021907 - Resource management error in Linux kernel mac80211
Published: February 19, 2026
Security Bulletin ID
SB2026021907
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Resource management error (CVE-ID: CVE-2025-71227)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to resource management error within the ieee80211_determine_chan_mode() function in net/mac80211/mlme.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.