CVE-2026-53257: wifi: cfg80211: enforce HE/EHT cap/oper consistency
Published Jun 25, 2026
·Updated
In the Linux kernel, the following vulnerability has been resolved:
wifi: cfg80211: enforce HE/EHT cap/oper consistency
Xiang Mei reports that mac80211 could crash if ehtcap is set but ehtoper isn't. Rather than fixing that for the individual user(s), enforce that both HE/EHT have consistent elements.
Affected Software
8 affected components
Linux Linux kernel
Linux Linux kernel>=6.16<7.0.13
Linux Linux kernel=7.1-rc1
Linux Linux kernel=7.1-rc2
Linux Linux kernel=7.1-rc3
Linux Linux kernel=7.1-rc4
Linux Linux kernel=7.1-rc5
Linux Linux kernel=7.1-rc6
Remediation
Event History
Jun 25, 2026
CVE Published
via MITRE·08:39 AM
Data Sourced
via MITRE·08:39 AM
Description
Data Sourced
via NVD·09:16 AM
RemedyDescriptionSeverityAffected Software
Frequently Asked Questions
1
What is the severity of CVE-2026-53257?
The severity of CVE-2026-53257 is rated as 34.
2
How do I fix CVE-2026-53257?
To fix CVE-2026-53257, ensure that both HE and EHT capabilities are consistently configured in the mac80211 subsystem.
3
What does CVE-2026-53257 affect?
CVE-2026-53257 affects the Linux kernel's mac80211 subsystem related to wireless network configuration.
4
What is the impact of CVE-2026-53257 on system performance?
The impact of CVE-2026-53257 could result in a crash of the mac80211 driver if HE/EHT consistency is not enforced.
5
Who reported CVE-2026-53257?
CVE-2026-53257 was reported by Xiang Mei.