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Vulnerability Change Records for CVE-2026-53209

Change History

New CVE Received from kernel.org 6/25/2026 5:16:38 AM

Action Type Old Value New Value
Added 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.
Added Reference

                  
                
              
https://git.kernel.org/stable/c/02f50e8bb69f9b22516163a09922f5537d3b12d1
Added Reference

                  
                
              
https://git.kernel.org/stable/c/10b0e832cc05d7aef4b92bed912cbd4a395d0862
Added Reference

                  
                
              
https://git.kernel.org/stable/c/1338ee049a8910ba6c9cee963920e978e6893c7d
Added Reference

                  
                
              
https://git.kernel.org/stable/c/5c65b96b549ea2dcfde497436bf9e048deb87758
Added Reference

                  
                
              
https://git.kernel.org/stable/c/cdd8bbdbee763fdf5bf343e6f7d4e79347739f62
Added Reference

                  
                
              
https://git.kernel.org/stable/c/dafc9f57140e66a10945127aa7433c3d715dc253
Added Affected

                  
                
              
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