# CVE-2026-19774: BlueZ A2DP Stack-based Buffer Overflow Remote Code Execution Vulnerability CVE-2026-19774 is fixed in 25 products on 1 platform, first by bluetooth 5.85-4ubuntu0.3, released September 15, 2026. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2026-19774 - Priority: High - CVSS: 7.1 (Important) - EPSS: 0.0027 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Sep 15, 2026 - Weakness: Stack-based Buffer Overflow - Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-19774 ## Description BlueZ A2DP Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of BlueZ. An attacker must first obtain the ability to pair a malicious Bluetooth device with the target system in order to exploit this vulnerability. The specific flaw exists within the handling of the stream endpoints. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-29429. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | bluetooth Ubuntu 20.04 LTS (focal) | 5.53-0ubuntu3.9+esm1 | [bluetooth 5.53-0ubuntu3.9+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-bluetooth-5.53-0ubuntu3.9-esm1.md) | Oct 12, 2026 | | Linux | bluetooth Ubuntu 22.04.1 LTS (jammy) | 5.64-0ubuntu1.5 | [bluetooth 5.64-0ubuntu1.5](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-bluetooth-5.64-0ubuntu1.5.md) | Oct 12, 2026 | | Linux | bluetooth Ubuntu 24.04.5 LTS (noble) | 5.72-0ubuntu5.7 | [bluetooth 5.72-0ubuntu5.7](https://patchblox.com/security/data/fix/linux/ubuntu-noble-bluetooth-5.72-0ubuntu5.7.md) | Oct 12, 2026 | | Linux | bluetooth Ubuntu 26.04.1 LTS (resolute) | 5.85-4ubuntu0.3 | [bluetooth 5.85-4ubuntu0.3](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-bluetooth-5.85-4ubuntu0.3.md) | Sep 15, 2026 | | Linux | bluez Debian 14 | 5.87-1 | [DEBIAN-CVE-2026-19774](https://patchblox.com/security/data/fix/linux/debian-cve-2026-19774.md) | Sep 17, 2026 | | Linux | bluez Ubuntu 20.04 LTS (focal) | 5.53-0ubuntu3.9+esm1 | [bluez 5.53-0ubuntu3.9+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-bluez-5.53-0ubuntu3.9-esm1.md) | Oct 12, 2026 | | Linux | bluez Ubuntu 22.04.1 LTS (jammy) | 5.64-0ubuntu1.5 | [bluez 5.64-0ubuntu1.5](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-bluez-5.64-0ubuntu1.5.md) | Oct 12, 2026 | | Linux | bluez Ubuntu 24.04.5 LTS (noble) | 5.72-0ubuntu5.7 | [bluez 5.72-0ubuntu5.7](https://patchblox.com/security/data/fix/linux/ubuntu-noble-bluez-5.72-0ubuntu5.7.md) | Oct 12, 2026 | | Linux | bluez Ubuntu 26.04.1 LTS (resolute) | 5.85-4ubuntu0.3 | [bluez 5.85-4ubuntu0.3](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-bluez-5.85-4ubuntu0.3.md) | Sep 15, 2026 | | Linux | bluez amzn 2023 | 5.62-2.amzn2023.0.7 | [ALAS2023-2026-3141](https://patchblox.com/security/data/fix/linux/alas2023-2026-3141.md) | Sep 28, 2026 | | Linux | bluez-cups Ubuntu 20.04 LTS (focal) | 5.53-0ubuntu3.9+esm1 | [bluez-cups 5.53-0ubuntu3.9+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-bluez-cups-5.53-0ubuntu3.9-esm1.md) | Oct 12, 2026 | | Linux | bluez-cups Ubuntu 22.04.1 LTS (jammy) | 5.64-0ubuntu1.5 | [bluez-cups 5.64-0ubuntu1.5](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-bluez-cups-5.64-0ubuntu1.5.md) | Oct 12, 2026 | | Linux | bluez-cups Ubuntu 24.04.5 LTS (noble) | 5.72-0ubuntu5.7 | [bluez-cups 5.72-0ubuntu5.7](https://patchblox.com/security/data/fix/linux/ubuntu-noble-bluez-cups-5.72-0ubuntu5.7.md) | Oct 12, 2026 | | Linux | bluez-cups Ubuntu 26.04.1 LTS (resolute) | 5.85-4ubuntu0.3 | [bluez-cups 5.85-4ubuntu0.3](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-bluez-cups-5.85-4ubuntu0.3.md) | Sep 15, 2026 | | Linux | bluez-cups amzn 2023 | 5.62-2.amzn2023.0.7 | [ALAS2023-2026-3141](https://patchblox.com/security/data/fix/linux/alas2023-2026-3141.md) | Sep 28, 2026 | | Linux | bluez-cups-debuginfo amzn 2023 | 5.62-2.amzn2023.0.7 | [ALAS2023-2026-3141](https://patchblox.com/security/data/fix/linux/alas2023-2026-3141.md) | Sep 28, 2026 | | Linux | bluez-debuginfo amzn 2023 | 5.62-2.amzn2023.0.7 | [ALAS2023-2026-3141](https://patchblox.com/security/data/fix/linux/alas2023-2026-3141.md) | Sep 28, 2026 | | Linux | bluez-debugsource amzn 2023 | 5.62-2.amzn2023.0.7 | [ALAS2023-2026-3141](https://patchblox.com/security/data/fix/linux/alas2023-2026-3141.md) | Sep 28, 2026 | | Linux | bluez-deprecated amzn 2023 | 5.62-2.amzn2023.0.7 | [ALAS2023-2026-3141](https://patchblox.com/security/data/fix/linux/alas2023-2026-3141.md) | Sep 28, 2026 | | Linux | bluez-deprecated-debuginfo amzn 2023 | 5.62-2.amzn2023.0.7 | [ALAS2023-2026-3141](https://patchblox.com/security/data/fix/linux/alas2023-2026-3141.md) | Sep 28, 2026 | | Linux | bluez-hcidump Ubuntu 20.04 LTS (focal) | 5.53-0ubuntu3.9+esm1 | [bluez-hcidump 5.53-0ubuntu3.9+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-bluez-hcidump-5.53-0ubuntu3.9-esm1.md) | Oct 12, 2026 | | Linux | bluez-hcidump Ubuntu 22.04.1 LTS (jammy) | 5.64-0ubuntu1.5 | [bluez-hcidump 5.64-0ubuntu1.5](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-bluez-hcidump-5.64-0ubuntu1.5.md) | Oct 12, 2026 | | Linux | bluez-hcidump Ubuntu 24.04.5 LTS (noble) | 5.72-0ubuntu5.7 | [bluez-hcidump 5.72-0ubuntu5.7](https://patchblox.com/security/data/fix/linux/ubuntu-noble-bluez-hcidump-5.72-0ubuntu5.7.md) | Oct 12, 2026 | | Linux | bluez-hcidump Ubuntu 26.04.1 LTS (resolute) | 5.85-4ubuntu0.3 | [bluez-hcidump 5.85-4ubuntu0.3](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-bluez-hcidump-5.85-4ubuntu0.3.md) | Sep 15, 2026 | | Linux | bluez-hid2hci amzn 2023 | 5.62-2.amzn2023.0.7 | [ALAS2023-2026-3141](https://patchblox.com/security/data/fix/linux/alas2023-2026-3141.md) | Sep 28, 2026 | | Linux | bluez-hid2hci-debuginfo amzn 2023 | 5.62-2.amzn2023.0.7 | [ALAS2023-2026-3141](https://patchblox.com/security/data/fix/linux/alas2023-2026-3141.md) | Sep 28, 2026 | | Linux | bluez-libs amzn 2023 | 5.62-2.amzn2023.0.7 | [ALAS2023-2026-3141](https://patchblox.com/security/data/fix/linux/alas2023-2026-3141.md) | Sep 28, 2026 | | Linux | bluez-libs-debuginfo amzn 2023 | 5.62-2.amzn2023.0.7 | [ALAS2023-2026-3141](https://patchblox.com/security/data/fix/linux/alas2023-2026-3141.md) | Sep 28, 2026 | | Linux | bluez-libs-devel amzn 2023 | 5.62-2.amzn2023.0.7 | [ALAS2023-2026-3141](https://patchblox.com/security/data/fix/linux/alas2023-2026-3141.md) | Sep 28, 2026 | | Linux | bluez-libs-devel-debuginfo amzn 2023 | 5.62-2.amzn2023.0.7 | [ALAS2023-2026-3141](https://patchblox.com/security/data/fix/linux/alas2023-2026-3141.md) | Sep 28, 2026 | | Linux | bluez-mesh amzn 2023 | 5.62-2.amzn2023.0.7 | [ALAS2023-2026-3141](https://patchblox.com/security/data/fix/linux/alas2023-2026-3141.md) | Sep 28, 2026 | | Linux | bluez-mesh-debuginfo amzn 2023 | 5.62-2.amzn2023.0.7 | [ALAS2023-2026-3141](https://patchblox.com/security/data/fix/linux/alas2023-2026-3141.md) | Sep 28, 2026 | | Linux | bluez-meshd Ubuntu 22.04.1 LTS (jammy) | 5.64-0ubuntu1.5 | [bluez-meshd 5.64-0ubuntu1.5](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-bluez-meshd-5.64-0ubuntu1.5.md) | Oct 12, 2026 | | Linux | bluez-meshd Ubuntu 24.04.5 LTS (noble) | 5.72-0ubuntu5.7 | [bluez-meshd 5.72-0ubuntu5.7](https://patchblox.com/security/data/fix/linux/ubuntu-noble-bluez-meshd-5.72-0ubuntu5.7.md) | Oct 12, 2026 | | Linux | bluez-meshd Ubuntu 26.04.1 LTS (resolute) | 5.85-4ubuntu0.3 | [bluez-meshd 5.85-4ubuntu0.3](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-bluez-meshd-5.85-4ubuntu0.3.md) | Sep 15, 2026 | | Linux | bluez-obexd Ubuntu 20.04 LTS (focal) | 5.53-0ubuntu3.9+esm1 | [bluez-obexd 5.53-0ubuntu3.9+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-bluez-obexd-5.53-0ubuntu3.9-esm1.md) | Oct 12, 2026 | | Linux | bluez-obexd Ubuntu 22.04.1 LTS (jammy) | 5.64-0ubuntu1.5 | [bluez-obexd 5.64-0ubuntu1.5](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-bluez-obexd-5.64-0ubuntu1.5.md) | Oct 12, 2026 | | Linux | bluez-obexd Ubuntu 24.04.5 LTS (noble) | 5.72-0ubuntu5.7 | [bluez-obexd 5.72-0ubuntu5.7](https://patchblox.com/security/data/fix/linux/ubuntu-noble-bluez-obexd-5.72-0ubuntu5.7.md) | Oct 12, 2026 | | Linux | bluez-obexd Ubuntu 26.04.1 LTS (resolute) | 5.85-4ubuntu0.3 | [bluez-obexd 5.85-4ubuntu0.3](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-bluez-obexd-5.85-4ubuntu0.3.md) | Sep 15, 2026 | | Linux | bluez-obexd amzn 2023 | 5.62-2.amzn2023.0.7 | [ALAS2023-2026-3141](https://patchblox.com/security/data/fix/linux/alas2023-2026-3141.md) | Sep 28, 2026 | | Linux | bluez-obexd-debuginfo amzn 2023 | 5.62-2.amzn2023.0.7 | [ALAS2023-2026-3141](https://patchblox.com/security/data/fix/linux/alas2023-2026-3141.md) | Sep 28, 2026 | | Linux | bluez-source Ubuntu 24.04.5 LTS (noble) | 5.72-0ubuntu5.7 | [bluez-source 5.72-0ubuntu5.7](https://patchblox.com/security/data/fix/linux/ubuntu-noble-bluez-source-5.72-0ubuntu5.7.md) | Oct 12, 2026 | | Linux | bluez-source Ubuntu 26.04.1 LTS (resolute) | 5.85-4ubuntu0.3 | [bluez-source 5.85-4ubuntu0.3](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-bluez-source-5.85-4ubuntu0.3.md) | Sep 15, 2026 | | Linux | bluez-test-scripts Ubuntu 24.04.5 LTS (noble) | 5.72-0ubuntu5.7 | [bluez-test-scripts 5.72-0ubuntu5.7](https://patchblox.com/security/data/fix/linux/ubuntu-noble-bluez-test-scripts-5.72-0ubuntu5.7.md) | Oct 12, 2026 | | Linux | bluez-test-scripts Ubuntu 26.04.1 LTS (resolute) | 5.85-4ubuntu0.3 | [bluez-test-scripts 5.85-4ubuntu0.3](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-bluez-test-scripts-5.85-4ubuntu0.3.md) | Sep 15, 2026 | | Linux | bluez-test-tools Ubuntu 24.04.5 LTS (noble) | 5.72-0ubuntu5.7 | [bluez-test-tools 5.72-0ubuntu5.7](https://patchblox.com/security/data/fix/linux/ubuntu-noble-bluez-test-tools-5.72-0ubuntu5.7.md) | Oct 12, 2026 | | Linux | bluez-test-tools Ubuntu 26.04.1 LTS (resolute) | 5.85-4ubuntu0.3 | [bluez-test-tools 5.85-4ubuntu0.3](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-bluez-test-tools-5.85-4ubuntu0.3.md) | Sep 15, 2026 | | Linux | bluez-tests Ubuntu 20.04 LTS (focal) | 5.53-0ubuntu3.9+esm1 | [bluez-tests 5.53-0ubuntu3.9+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-bluez-tests-5.53-0ubuntu3.9-esm1.md) | Oct 12, 2026 | | Linux | bluez-tests Ubuntu 22.04.1 LTS (jammy) | 5.64-0ubuntu1.5 | [bluez-tests 5.64-0ubuntu1.5](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-bluez-tests-5.64-0ubuntu1.5.md) | Oct 12, 2026 | | Linux | libbluetooth3 Ubuntu 20.04 LTS (focal) | 5.53-0ubuntu3.9+esm1 | [libbluetooth3 5.53-0ubuntu3.9+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libbluetooth3-5.53-0ubuntu3.9-esm1.md) | Oct 12, 2026 | | Linux | libbluetooth3 Ubuntu 22.04.1 LTS (jammy) | 5.64-0ubuntu1.5 | [libbluetooth3 5.64-0ubuntu1.5](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libbluetooth3-5.64-0ubuntu1.5.md) | Oct 12, 2026 | | Linux | libbluetooth3 Ubuntu 24.04.5 LTS (noble) | 5.72-0ubuntu5.7 | [libbluetooth3 5.72-0ubuntu5.7](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libbluetooth3-5.72-0ubuntu5.7.md) | Oct 12, 2026 | | Linux | libbluetooth3 Ubuntu 26.04.1 LTS (resolute) | 5.85-4ubuntu0.3 | [libbluetooth3 5.85-4ubuntu0.3](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libbluetooth3-5.85-4ubuntu0.3.md) | Sep 15, 2026 | --- Data as of 2026-11-09T01:18:40Z UTC. 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