CVE-2026-53257

A flaw was found in the Linux kernel. An issue within the mac80211 Wi-Fi subsystem, specifically related to the enforcement of High Efficiency HE and Extremely High Throughput EHT capabilities and operations, could lead to a system crash. This vulnerability arises when HE/EHT capabilities are set...

CVE-2026-53257

The CVE-2026-53257 entry concerns the Linux kernel’s wifi stack (mac80211/cfg80211) where HE/EHT capability elements (HE/EHT cap and oper) must be consistent. The bug allowed a crash in mac80211 when eht_cap is set but eht_oper isn’t; the fix enforces that both HE and EHT elements are aligned to ...

EUVD-2026-39208

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 users, enforce that both HE/EHT have consistent elemen...

CVE-2025-38509

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: reject VHT opmode for unsupported channel widths VHT operating mode notifications are not defined for channel widths below 20 MHz. In particular, 5 MHz and 10 MHz are not valid under the VHT specification and must...