USN-8908-1 fixed vulnerabilities in BlueZ. Unfortunately, that update introduced a regression in the A2DP profile: cached remote stream endpoints were no longer loaded at startup, which could cause Bluetooth audio devices to fail to reconnect automatically or to fall back to low-quality audio profiles. This update fixes the problem.
We apologize for the inconvenience.
Original advisory details:
Michael Bommarito discovered that BlueZ incorrectly handled codec capability storage in the A2DP profile. An attacker could possibly use this issue to cause a stack buffer overflow, resulting in a denial of service or arbitrary code execution. This issue only affected Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS and Ubuntu 26.04 LTS. (CVE-2026-19774)
It was discovered that BlueZ incorrectly handled packet length validation. An attacker could possibly use this issue to read out of bounds memory, causing a crash or exposing sensitive information. (CVE-2026-75032)
It was discovered that BlueZ incorrectly handled crafted XML input. An attacker could possibly use this issue to crash BlueZ, resulting in a denial of service. (CVE-2026-80185)
It was discovered that BlueZ incorrectly parsed remote names from Extended Inquiry Response data. An attacker could possibly use this issue to cause a stack buffer overflow, resulting in a denial of service or arbitrary code execution. (CVE-2026-80186)
Alexandro Calo discovered that BlueZ incorrectly parsed certain responses in the AVRCP profile. An attacker could possibly use this issue to access out of bounds memory, causing a crash or exposing sensitive information. (CVE-2026-85218)
{
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
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"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8908-2.json"
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"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8908-2.json"
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"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8908-2.json"
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"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8908-2.json"