Answer in brief
CVE-2026-53209 records a High severity (CVSS 7.8) vulnerability in Bluetooth: hci_sync: reject oversized Broadcast Announcement prepend. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=63f365eb4d1668a04070151b555d55a07ede8d4b <10b0e832cc05d7aef4b92bed912cbd4a395d0862 || >=c621211b308816889f0a3246de448bfcef8ab3ab <1338ee049a8910ba6c9cee963920e978e6893c7d || >=907ef6e12fb558a0763e894311eb245a94c192dd <02f50e8bb69f9b22516163a09922f5537d3b12d1 || >=5725bc608252050ed8a4d47d59225b7dd73474c8 <dafc9f57140e66a10945127aa7433c3d715dc253 || >=5725bc608252050ed8a4d47d59225b7dd73474c8 <cdd8bbdbee763fdf5bf343e6f7d4e79347739f62 || >=5725bc608252050ed8a4d47d59225b7dd73474c8 <5c65b96b549ea2dcfde497436bf9e048deb87758 || 15da883c010cbc2a84aec1738b6ad6ee477846de || >=6.1.142 <6.1.176 || >=6.6.94 <6.6.143 || >=6.12.34 <6.12.94 || >=6.15.3 <6.16 | 10b0e832cc05d7aef4b92bed912cbd4a395d0862, 1338ee049a8910ba6c9cee963920e978e6893c7d, 02f50e8bb69f9b22516163a09922f5537d3b12d1, dafc9f57140e66a10945127aa7433c3d715dc253, cdd8bbdbee763fdf5bf343e6f7d4e79347739f62, 5c65b96b549ea2dcfde497436bf9e048deb87758, 6.1.176, 6.6.143, 6.12.94, 6.16 |
| Linux/Linuxgeneric | 6.16 | Not reported |
Published upstream
Jun 25, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 25, 2026
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.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-53209 records a High severity (CVSS 7.8) vulnerability in Bluetooth: hci_sync: reject oversized Broadcast Announcement prepend. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=63f365eb4d1668a04070151b555d55a07ede8d4b <10b0e832cc05d7aef4b92bed912cbd4a395d0862 || >=c621211b308816889f0a3246de448bfcef8ab3ab <1338ee049a8910ba6c9cee963920e978e6893c7d || >=907ef6e12fb558a0763e894311eb245a94c192dd <02f50e8bb69f9b22516163a09922f5537d3b12d1 || >=5725bc608252050ed8a4d47d59225b7dd73474c8 <dafc9f57140e66a10945127aa7433c3d715dc253 || >=5725bc608252050ed8a4d47d59225b7dd73474c8 <cdd8bbdbee763fdf5bf343e6f7d4e79347739f62 || >=5725bc608252050ed8a4d47d59225b7dd73474c8 <5c65b96b549ea2dcfde497436bf9e048deb87758 || 15da883c010cbc2a84aec1738b6ad6ee477846de || >=6.1.142 <6.1.176 || >=6.6.94 <6.6.143 || >=6.12.34 <6.12.94 || >=6.15.3 <6.16 | 10b0e832cc05d7aef4b92bed912cbd4a395d0862, 1338ee049a8910ba6c9cee963920e978e6893c7d, 02f50e8bb69f9b22516163a09922f5537d3b12d1, dafc9f57140e66a10945127aa7433c3d715dc253, cdd8bbdbee763fdf5bf343e6f7d4e79347739f62, 5c65b96b549ea2dcfde497436bf9e048deb87758, 6.1.176, 6.6.143, 6.12.94, 6.16 |
| Linux/Linuxgeneric | 6.16 | Not reported |
Published upstream
Jun 25, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 25, 2026
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.
Quoted source text, attributed separately from HOL analysis.