PT-2026-34903

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the mac80211 wifi component where the aql enable write function does not serialize concurrent writes to the debugfs. This can lead to a static branch dec underflow for...

Linux Distros Unpatched Vulnerability : CVE-2026-31551

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - wifi: mac80211: Fix staticbranchdec underflow for aqldisable. syzbot reported staticbranchdec underflow in aqlenablewrite. 0 The problem is that aqlenablewrite...

USN-8201-1: Linux kernel (Azure) vulnerabilities

Qualys discovered that several vulnerabilities existed in the AppArmor Linux kernel Security Module LSM. An unprivileged local attacker could use these issues to load, replace, and remove arbitrary AppArmor profiles causing denial of service, exposure of sensitive information kernel memory, local...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-011196)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-011196 advisory. In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: fix use-after-free We've already freed the assocdata at this point, so need to us...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-007547)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-007547 advisory. In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: fix use-after-free We've already freed the assocdata at this point, so need to us...

ROS-20260414-73-0058

A vulnerability in the ieee80211rxhaction function in the net/mac80211/rx.c module of the mac80211 stack implementation of the Linux operating system kernel is related to memory reads outside of the allocated buffer. Exploitation of the vulnerability may allow an intruder to affect confidentialit...

ROS-20260414-73-0030

A vulnerability in the mac80211hwsimselecttxlink function of the drivers/net/wireless/virtual/mac80211hwsim.c module of the Linux kernel wireless adapter driver is related to pointer dereferencing. Exploitation of the vulnerability could allow an attacker to cause a denial of service...

mac80211: fix crash in ieee80211_chan_bw_change for AP_VLAN stations

...

Linux Distros Unpatched Vulnerability : CVE-2026-23444

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - wifi: mac80211: always free skb on ieee80211txprepareskb failure ieee80211txprepareskb has three error paths, but only two of them free the skb. The first error...

SUSE CVE-2026-23444

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: always free skb on ieee80211txprepareskb failure ieee80211txprepareskb has three error paths, but only two of them free the skb. The first error path ieee80211txprepare returning TXDROP does not free it, while...

CVE-2026-31394

A flaw was found in the Linux kernel's mac80211 component. This vulnerability occurs when processing stations on APVLAN interfaces, such as 4-address Wireless Distribution System WDS clients. An attacker could trigger a null pointer dereference during Channel Switch Announcement CSA operations,...

EUVD-2026-18770

In the Linux kernel, the following vulnerability has been resolved: mac80211: fix crash in ieee80211chanbwchange for APVLAN stations ieee80211chanbwchange iterates all stations and accesses link-reserved.oper via sta-sdata-linklinkid. For stations on APVLAN interfaces e.g. 4addr WDS clients,...

EUVD-2026-18688

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: always free skb on ieee80211txprepareskb failure ieee80211txprepareskb has three error paths, but only two of them free the skb. The first error path ieee80211txprepare returning TXDROP does not free it, while...

CVE-2026-23444

A flaw was found in the Linux kernel's mac80211 Wi-Fi subsystem. This vulnerability occurs because a specific error path within the ieee80211txprepareskb function fails to properly release a network buffer, known as a socket buffer skb. This inconsistency can lead to a double-free condition, wher...

CVE-2026-31394

In the Linux kernel, the following vulnerability has been resolved: mac80211: fix crash in ieee80211chanbwchange for APVLAN stations ieee80211chanbwchange iterates all stations and accesses link-reserved.oper via sta-sdata-linklinkid. For stations on APVLAN interfaces e.g. 4addr WDS clients,...

CVE-2026-23444

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: always free skb on ieee80211txprepareskb failure ieee80211txprepareskb has three error paths, but only two of them free the skb. The first error path ieee80211txprepare returning TXDROP does not free it, while...

CVE-2026-23444

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: always free skb on ieee80211txprepareskb failure ieee80211txprepareskb has three error paths, but only two of them free the skb. The first error path ieee80211txprepare returning TXDROP does not free it, while...

UBUNTU-CVE-2026-23444

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: always free skb on ieee80211txprepareskb failure ieee80211txprepareskb has three error paths, but only two of them free the skb. The first error path ieee80211txprepare returning TXDROP does not free it, while...

CVE-2026-31394

In the Linux kernel, the following vulnerability has been resolved: mac80211: fix crash in ieee80211chanbwchange for APVLAN stations ieee80211chanbwchange iterates all stations and accesses link-reserved.oper via sta-sdata-linklinkid. For stations on APVLAN interfaces e.g. 4addr WDS clients,...

CVE-2026-23444

CVE-2026-23444 has been addressed in the Linux kernel by fixing skb ownership handling in wifi/mac80211. The patch adds kfree_skb() in the ieee80211_tx_prepare_skb() failure path to ensure all error paths free the skb, and removes redundant frees in callers (ath9k, mt76, mac80211_hwsim). The func...