kernel: wifi: mac80211: limit injected antenna index in ieee80211_parse_tx_radiotap

A flaw was found in the Linux kernel's mac80211 WiFi subsystem. This vulnerability allows an attacker to cause undefined behavior by injecting a specially crafted frame with an invalid radiotap header. This can lead to system instability or a denial of service DoS, potentially causing the system ...

SUSE CVE-2026-63869

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: limit injected antenna index in ieee80211parsetxradiotap When parsing the radiotap header of an injected frame, ieee80211parsetxradiotap uses the IEEE80211RADIOTAPANTENNA value directly as a shift count:...

CVE-2026-63869

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: limit injected antenna index in ieee80211parsetxradiotap When parsing the radiotap header of an injected frame, ieee80211parsetxradiotap uses the IEEE80211RADIOTAPANTENNA value directly as a shift count:...

CVE-2026-63869 wifi: mac80211: limit injected antenna index in ieee80211_parse_tx_radiotap

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: limit injected antenna index in ieee80211parsetxradiotap When parsing the radiotap header of an injected frame, ieee80211parsetxradiotap uses the IEEE80211RADIOTAPANTENNA value directly as a shift count:...

CVE-2026-63869 wifi: mac80211: limit injected antenna index in ieee80211_parse_tx_radiotap

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: limit injected antenna index in ieee80211parsetxradiotap When parsing the radiotap header of an injected frame, ieee80211parsetxradiotap uses the IEEE80211RADIOTAPANTENNA value directly as a shift count:...

EUVD-2026-45554

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: limit injected antenna index in ieee80211parsetxradiotap When parsing the radiotap header of an injected frame, ieee80211parsetxradiotap uses the IEEE80211RADIOTAPANTENNA value directly as a shift count:...

CVE-2026-63869

Summary of concrete details (CVE-2026-63869): In the Linux kernel’s wifi/mac80211 stack, parsing the radiotap header of an injected frame may read an 8-bit antenna index from userspace and apply it as a shift count, potentially shifting up to 255. The code path ieee80211_parse_tx_radiotap in net/...

PT-2026-61186

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the ieee80211 parse tx radiotap function when parsing the radiotap header of an injected frame. The function uses the IEEE80211 RADIOTAP ANTENNA value, which is an 8-b...