CVE-2026-74489 wifi: mac80211: fix tid_tx use-after-free on BA session stop

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: fix tidtx use-after-free on BA session stop ieee80211stoptxbacb hands tidtx to kfreercu through ieee80211removetidtx, and then reads tidtx-ndp after dropping sta-lock: ieee80211removetidtxsta, tid; / kfreercutidtx...

CVE-2026-74489

Summary: CVE-2026-74489 concerns the Linux kernel’s wifi/mac80211 path, where tid_tx can be freed via kfree_rcu during BA session stop, while tid_tx->ndp may still be read. The sequence is: ieee80211_remove_tid_tx(...) frees tid_tx; after dropping sta->lock, code may access tid_tx->ndp, ...

EUVD-2026-59682

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: fix tidtx use-after-free on BA session stop ieee80211stoptxbacb hands tidtx to kfreercu through ieee80211removetidtx, and then reads tidtx-ndp after dropping sta-lock: ieee80211removetidtxsta, tid; / kfreercutidtx...

EUVD-2009-3997

Malware in sbrugna...

wifi: mac80211: fix NULL dereference at band check in starting tx ba session

...

SUSE CVE-2009-4027

Race condition in the mac80211 subsystem in the Linux kernel before 2.6.32-rc8-next-20091201 allows remote attackers to cause a denial of service system crash via a Delete Block ACK aka DELBA packet that triggers a certain state change in the absence of an aggregation session...

Denial Of Service (DoS)

The kernel package is vulnerable to Denial Of Service DoS. A race condition was found in the mac80211 implementation, a framework used for writing drivers for wireless devices. An attacker could trigger this flaw by sending a Delete Block ACK DELBA packet to a target system, resulting in a remote...

kernel: mac80211: fix spurious delBA handling

Race condition in the mac80211 subsystem in the Linux kernel before 2.6.32-rc8-next-20091201 allows remote attackers to cause a denial of service system crash via a Delete Block ACK aka DELBA packet that triggers a certain state change in the absence of an aggregation session...

CVE-2009-4027

Race condition in the mac80211 subsystem in the Linux kernel before 2.6.32-rc8-next-20091201 allows remote attackers to cause a denial of service system crash via a Delete Block ACK aka DELBA packet that triggers a certain state change in the absence of an aggregation session...

CVE-2009-4027

Race condition in the mac80211 subsystem in the Linux kernel before 2.6.32-rc8-next-20091201 allows remote attackers to cause a denial of service system crash via a Delete Block ACK aka DELBA packet that triggers a certain state change in the absence of an aggregation session...

CVE-2009-4026

The mac80211 subsystem in the Linux kernel before 2.6.32-rc8-next-20091201 allows remote attackers to cause a denial of service panic via a crafted Delete Block ACK aka DELBA packet, related to an erroneous "code shuffling patch."...