{"cve":{"cve_id":"CVE-2026-53209","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":null,"epss_percentile":null,"epss_as_of":null,"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_sync: reject oversized Broadcast Announcement prepend\n\nExisting advertising instances can already hold the maximum extended\nadvertising payload. When hci_adv_bcast_annoucement() prepends the\nBroadcast Announcement service data to that payload, the combined data\nmay no longer fit in the temporary buffer used to rebuild the\nadvertising data.\n\nReject that case before copying the existing payload and report the\nfailure through the device log. This keeps the existing advertising\ndata intact and avoids overrunning the temporary buffer.","published_at":"2026-06-25T08:39:14.915000Z","last_modified_at":null,"cvss_v3_score":7.8,"cvss_v3_vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cvss_v3_severity":"HIGH","cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":null,"ssvc_automatable":null,"ssvc_technical_impact":null,"cwes":null,"nvd_references":["https://git.kernel.org/stable/c/10b0e832cc05d7aef4b92bed912cbd4a395d0862","https://git.kernel.org/stable/c/1338ee049a8910ba6c9cee963920e978e6893c7d","https://git.kernel.org/stable/c/02f50e8bb69f9b22516163a09922f5537d3b12d1","https://git.kernel.org/stable/c/dafc9f57140e66a10945127aa7433c3d715dc253","https://git.kernel.org/stable/c/cdd8bbdbee763fdf5bf343e6f7d4e79347739f62","https://git.kernel.org/stable/c/5c65b96b549ea2dcfde497436bf9e048deb87758"],"vuln_status":null,"trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-06-28T17:55:28.590503Z","updated_at":"2026-06-28T23:30:51.545322Z"},"effective_severity":"HIGH","badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","metrics":[{"metric":"AV","name":"Attack Vector","value":"L","value_label":"Local"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"PR","name":"Privileges Required","value":"L","value_label":"Low"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"S","name":"Scope","value":"U","value_label":"Unchanged"},{"metric":"C","name":"Confidentiality","value":"H","value_label":"High"},{"metric":"I","name":"Integrity","value":"H","value_label":"High"},{"metric":"A","name":"Availability","value":"H","value_label":"High"}]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"63f365eb4d1668a04070151b555d55a07ede8d4b","version_start_inclusive":true,"version_end":"10b0e832cc05d7aef4b92bed912cbd4a395d0862","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:63f365eb4d1668a04070151b555d55a07ede8d4b:10b0e832cc05d7aef4b92bed912cbd4a395d0862"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"c621211b308816889f0a3246de448bfcef8ab3ab","version_start_inclusive":true,"version_end":"1338ee049a8910ba6c9cee963920e978e6893c7d","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:c621211b308816889f0a3246de448bfcef8ab3ab:1338ee049a8910ba6c9cee963920e978e6893c7d"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"907ef6e12fb558a0763e894311eb245a94c192dd","version_start_inclusive":true,"version_end":"02f50e8bb69f9b22516163a09922f5537d3b12d1","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:907ef6e12fb558a0763e894311eb245a94c192dd:02f50e8bb69f9b22516163a09922f5537d3b12d1"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"5725bc608252050ed8a4d47d59225b7dd73474c8","version_start_inclusive":true,"version_end":"dafc9f57140e66a10945127aa7433c3d715dc253","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:5725bc608252050ed8a4d47d59225b7dd73474c8:dafc9f57140e66a10945127aa7433c3d715dc253"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"5725bc608252050ed8a4d47d59225b7dd73474c8","version_start_inclusive":true,"version_end":"cdd8bbdbee763fdf5bf343e6f7d4e79347739f62","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:5725bc608252050ed8a4d47d59225b7dd73474c8:cdd8bbdbee763fdf5bf343e6f7d4e79347739f62"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"5725bc608252050ed8a4d47d59225b7dd73474c8","version_start_inclusive":true,"version_end":"5c65b96b549ea2dcfde497436bf9e048deb87758","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:5725bc608252050ed8a4d47d59225b7dd73474c8:5c65b96b549ea2dcfde497436bf9e048deb87758"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"15da883c010cbc2a84aec1738b6ad6ee477846de","version_start_inclusive":true,"version_end":"15da883c010cbc2a84aec1738b6ad6ee477846de","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:15da883c010cbc2a84aec1738b6ad6ee477846de:15da883c010cbc2a84aec1738b6ad6ee477846de"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.1.142","version_start_inclusive":true,"version_end":"6.1.176","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:6.1.142:6.1.176"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.6.94","version_start_inclusive":true,"version_end":"6.6.143","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:6.6.94:6.6.143"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.12.34","version_start_inclusive":true,"version_end":"6.12.94","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:6.12.34:6.12.94"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.15.3","version_start_inclusive":true,"version_end":"6.16","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:6.15.3:6.16"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.16","version_start_inclusive":true,"version_end":"6.16","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.16:6.16"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"0","version_start_inclusive":true,"version_end":"6.16","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:0:6.16"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.1.176","version_start_inclusive":true,"version_end":"6.1.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.1.176:6.1.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.6.143","version_start_inclusive":true,"version_end":"6.6.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.6.143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published","source":null}]}