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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.

PUBLISHED Reserved 2026-06-09 | Published 2026-06-25 | Updated 2026-06-25 | Assigner Linux

Product status

Default status
unaffected

63f365eb4d1668a04070151b555d55a07ede8d4b (git) before 10b0e832cc05d7aef4b92bed912cbd4a395d0862
affected

c621211b308816889f0a3246de448bfcef8ab3ab (git) before 1338ee049a8910ba6c9cee963920e978e6893c7d
affected

907ef6e12fb558a0763e894311eb245a94c192dd (git) before 02f50e8bb69f9b22516163a09922f5537d3b12d1
affected

5725bc608252050ed8a4d47d59225b7dd73474c8 (git) before dafc9f57140e66a10945127aa7433c3d715dc253
affected

5725bc608252050ed8a4d47d59225b7dd73474c8 (git) before cdd8bbdbee763fdf5bf343e6f7d4e79347739f62
affected

5725bc608252050ed8a4d47d59225b7dd73474c8 (git) before 5c65b96b549ea2dcfde497436bf9e048deb87758
affected

15da883c010cbc2a84aec1738b6ad6ee477846de (git)
affected

6.1.142 (semver) before 6.1.176
affected

6.6.94 (semver) before 6.6.143
affected

6.12.34 (semver) before 6.12.94
affected

6.15.3 (semver) before 6.16
affected

Default status
affected

6.16
affected

Any version before 6.16
unaffected

6.1.176 (semver)
unaffected

6.6.143 (semver)
unaffected

6.12.94 (semver)
unaffected

6.18.36 (semver)
unaffected

7.0.13 (semver)
unaffected

7.1 (original_commit_for_fix)
unaffected

References

git.kernel.org/...c/10b0e832cc05d7aef4b92bed912cbd4a395d0862

git.kernel.org/...c/1338ee049a8910ba6c9cee963920e978e6893c7d

git.kernel.org/...c/02f50e8bb69f9b22516163a09922f5537d3b12d1

git.kernel.org/...c/dafc9f57140e66a10945127aa7433c3d715dc253

git.kernel.org/...c/cdd8bbdbee763fdf5bf343e6f7d4e79347739f62

git.kernel.org/...c/5c65b96b549ea2dcfde497436bf9e048deb87758

cve.org (CVE-2026-53209)

nvd.nist.gov (CVE-2026-53209)

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