CVE-2026-53209

The CVE-2026-53209 issue affects the Linux kernel Bluetooth subsystem (hci_sync). When hci_adv_bcast_annoucement() tries to prepend the Broadcast Announcement service data to an already-full extended advertising payload, the combined data could exceed the temporary buffer used to rebuild advertis...

CVE-2026-53209 Bluetooth: hci_sync: reject oversized Broadcast Announcement prepend

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcisync: reject oversized Broadcast Announcement prepend Existing advertising instances can already hold the maximum extended advertising payload. When hciadvbcastannoucement prepends the Broadcast Announcement service...

CVE-2026-43021

A flaw was found in the Bluetooth hcisync component of the Linux kernel. When the hcicmdsyncqueueonce function fails, the associated destroy callback is not invoked, leading to memory and reference leaks. This continuous leakage of resources could eventually result in a Denial of Service DoS...

CVE-2026-43022

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcisync: hcicmdsyncqueueonce return -EEXIST if exists hcicmdsyncqueueonce needs to indicate whether a queue item was added, so caller can know if callbacks are called, so it can avoid leaking resources. Change the...

Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that stems from the presence of post-release reuse of Bluetooth hcisync...

EUVD-2025-201627

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcisync: fix race in hcicmdsyncdequeueonce hcicmdsyncdequeueonce does lookup and then cancel the entry under two separate lock sections. Meanwhile, hcicmdsyncwork can also delete the same entry, leading to double listd...