Detections
Analytics
CVE-2026-53209
high
Description
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_sync: reject oversized Broadcast Announcement prepend Existing advertising instances can already hold the maximum extended advertising payload. When hci_adv_bcast_annoucement() prepends the Broadcast Announcement service data to that payload, the combined data may no longer fit in the temporary buffer used to rebuild the advertising data. Reject that case before copying the existing payload and report the failure through the device log. This keeps the existing advertising data intact and avoids overrunning the temporary buffer.
References
https://git.kernel.org/stable/c/dafc9f57140e66a10945127aa7433c3d715dc253
https://git.kernel.org/stable/c/cdd8bbdbee763fdf5bf343e6f7d4e79347739f62
https://git.kernel.org/stable/c/5c65b96b549ea2dcfde497436bf9e048deb87758
https://git.kernel.org/stable/c/1338ee049a8910ba6c9cee963920e978e6893c7d
https://git.kernel.org/stable/c/10b0e832cc05d7aef4b92bed912cbd4a395d0862
https://git.kernel.org/stable/c/02f50e8bb69f9b22516163a09922f5537d3b12d1