Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: Do not finalize the CSA in IBSS mode if the state is disconnected. When we are not connected to a channel, sending the “switch” announcement doesn’t make any sense. The BSS list is empty in that case. This causes...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: Wifi: cfg80211: Values of NL80211ATTRTXQQUANTUM are restricted. syzbot can trigger soft lockups by setting NL80211ATTRTXQQUANTUM to 2^31. We had a similar issue in schfq, which was fixed in the commit d9e15a273306 "pktsched: f...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: Added a missing lock in cfg80211checkandendcac. Callers of wdevchandef must hold the wiphy mutex. However, the worker function cfg80211propagatecacdonewk never holds the wiphy mutex. This triggers the following...

CVE-2026-74336 wifi: mac80211: bound S1G TIM PVB walk to the TIM element

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: bound S1G TIM PVB walk to the TIM element ieee80211s1gchecktim parses the S1G Partial Virtual Bitmap PVB of a received TIM element. The TIM is handed in as the element payload: ieee80211parseelemsfull stores...

CVE-2026-68406

In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: validate PMSR FTM preamble range PMSR FTM request parsing accepts preamble values outside the enumerated nl80211 preamble range. Reject out-of-range values before using them in the parser capability bit test using...

DEBIAN-CVE-2026-68310

In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7915: guard HE capability lookups mt7915mcubsshetlv and mt7915mcustabfertlv both run after checking HE support, then dereference the HE PHY capability returned by mt76connacgethephycap. That helper can return NULL...

EUVD-2026-55590

In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: use wiphy work for socket owner autodisconnect nl80211netlinknotify walks the cfg80211 wireless device list when a NETLINKGENERIC socket is released. If the socket owns a connection, the notifier queues the embedd...

CVE-2026-64570

A flaw was found in the Linux kernel's Wi-Fi subsystem mac80211. A double-free vulnerability exists in the handling of FILS Fast Initial Link Setup Discovery frames. When an allocation failure occurs during the update of a FILS Discovery template, the same memory region can be freed twice. This c...

CVE-2026-64568

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: fix unsolbcastproberesp double free on alloc failure ieee80211setunsolbcastproberesp calls kfreercu on the old template before allocating the replacement. If the kzalloc then fails, it returns -ENOMEM while...

kernel: wifi: mac80211: drop stray 'static' from fast-RX rx_result

A flaw was found in the Linux kernel's Wi-Fi mac80211 subsystem. The ieee80211invokefastrx function uses a static variable for rxresult, which is shared across concurrent calls. This can lead to incorrect processing of Wi-Fi packets, where a packet might be mishandled or its status incorrectly...

CVE-2026-64174

In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: advance loop vars in cfg80211mergeprofile cfg80211mergeprofile reassembles a Multi-BSSID non-transmitted BSS profile that has been split across multiple consecutive MBSSID elements. Its while-loop calls...

kernel: wifi: mac80211: drop stray 'static' from fast-RX rx_result

A flaw was found in the Linux kernel's Wi-Fi mac80211 subsystem. The ieee80211invokefastrx function uses a static variable for rxresult, which is shared across concurrent calls. This can lead to incorrect processing of Wi-Fi packets, where a packet might be mishandled or its status incorrectly...

CVE-2026-53182 wifi: nl80211: reject oversized EMA RNR lists

In the Linux kernel, the following vulnerability has been resolved: wifi: nl80211: reject oversized EMA RNR lists nl80211parsernrelems stores the parsed element count in a u8-backed cfg80211rnrelems::cnt field and uses that count to size the flexible array allocation. Reject nested...

kernel: wifi: mac80211: remove station if connection prep fails

A flaw was found in the Linux kernel's mac80211 Wi-Fi subsystem. When Multi-Link Operation MLO connection preparation fails, the system may not correctly remove the associated station. This can lead to a use-after-free or double-free vulnerability in the debugfs component, potentially causing...

kernel: wifi: mac80211: drop stray 'static' from fast-RX rx_result

A flaw was found in the Linux kernel's Wi-Fi mac80211 subsystem. The ieee80211invokefastrx function uses a static variable for rxresult, which is shared across concurrent calls. This can lead to incorrect processing of Wi-Fi packets, where a packet might be mishandled or its status incorrectly...

kernel: wifi: mac80211: drop stray 'static' from fast-RX rx_result

A flaw was found in the Linux kernel's Wi-Fi mac80211 subsystem. The ieee80211invokefastrx function uses a static variable for rxresult, which is shared across concurrent calls. This can lead to incorrect processing of Wi-Fi packets, where a packet might be mishandled or its status incorrectly...

kernel: wifi: mac80211: remove station if connection prep fails

A flaw was found in the Linux kernel's mac80211 Wi-Fi subsystem. When Multi-Link Operation MLO connection preparation fails, the system may not correctly remove the associated station. This can lead to a use-after-free or double-free vulnerability in the debugfs component, potentially causing...

CVE-2026-46152

A flaw was found in the Linux kernel's Wi-Fi mac80211 subsystem. The ieee80211invokefastrx function uses a static variable for rxresult, which is shared across concurrent calls. This can lead to incorrect processing of Wi-Fi packets, where a packet might be mishandled or its status incorrectly...

USN-8277-1: Linux kernel vulnerabilities

It was discovered that the Linux kernel algifaead module did not properly handle in-place cryptographic operations. This flaw is known as Copy Fail. A local attacker could use this to escalate privileges, or possibly escape a container. CVE-2026-31431 Several security issues were discovered in th...

CVE-2026-31548

A flaw was found in the Linux kernel's cfg80211 Wi-Fi subsystem. When a Wi-Fi interface is shut down, a scheduled work item pmsrfreewk may not be properly cancelled. This can lead to the work item attempting to operate on an already removed interface, resulting in undefined behavior and potential...