CVEvulnerability

CVE-2026-53209

7.8 HIGH Published 2026-06-25 Modified 2026-10-19 Official page ↗
Status
Modified
Published
2026-06-25
Last modified
2026-10-19
Assigner
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS 3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-122, CWE-787

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.

Affected configurations

• linux linux kernel (>= 6.1.142 < 6.1.176) • linux linux kernel (>= 6.6.94 < 6.6.143) • linux linux kernel (>= 6.12.34 < 6.12.94) • linux linux kernel (>= 6.15.3 < 6.16) • linux linux kernel (>= 6.16.1 < 6.18.36) • linux linux kernel (>= 6.19 < 7.0.13) • linux linux kernel 6.16 • linux linux kernel 7.1

Related

Weakness · CWE (2)

  • CWE-122 Heap-based Buffer Overflow weakness
  • CWE-787 Out-of-bounds Write weakness

References