CVE catalog
CVE-2026-80186
A stack-based buffer overflow vulnerability exists in BlueZ, the Linux Bluetooth protocol stack. A remote user within Bluetooth radio range can send a specially crafted Extended Inquiry Response (EIR)
- Severity
- High · CVSS 7.6
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.50% · Oct 25, 2026
A stack-based buffer overflow vulnerability exists in BlueZ, the Linux Bluetooth protocol stack. A remote user within Bluetooth radio range can send a specially crafted Extended Inquiry Response (EIR) packet that causes a buffer overflow when the target device performs Bluetooth discovery. This vulnerability can lead to a Denial of Service (DoS) by crashing the bluetoothd service and may allow for arbitrary code execution.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | bluez | sid | 5.87-5 | fixed |
| Debian | bluez | forky | 5.87-5 | fixed |
| Debian | bluez | trixie | 5.82-1.1 | vulnerable |
| Debian | bluez | bookworm | 5.66-1+deb12u2 | vulnerable |
| Debian | bluez | bookworm-security | 5.66-1+deb12u1 | vulnerable |
| Ubuntu | bluez | noble | 5.72-0ubuntu5.7 | fixed |
| Ubuntu | bluetooth | noble | 5.72-0ubuntu5.7 | fixed |
| Ubuntu | bluez-cups | noble | 5.72-0ubuntu5.7 | fixed |
| Ubuntu | bluez-hcidump | noble | 5.72-0ubuntu5.7 | fixed |
| Ubuntu | bluez-meshd | noble | 5.72-0ubuntu5.7 | fixed |
| Ubuntu | bluez-obexd | noble | 5.72-0ubuntu5.7 | fixed |
| Ubuntu | bluez-source | noble | 5.72-0ubuntu5.7 | fixed |
| Ubuntu | bluez-test-scripts | noble | 5.72-0ubuntu5.7 | fixed |
| Ubuntu | bluez-test-tools | noble | 5.72-0ubuntu5.7 | fixed |
| Ubuntu | libbluetooth-dev | noble | 5.72-0ubuntu5.7 | fixed |
| Ubuntu | libbluetooth3 | noble | 5.72-0ubuntu5.7 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | bluez | source | sid | 5.87-3 | not yet assigned | Not reported | [1145869] |
| Debian | bluez | source | forky | 5.87-3 | not yet assigned | Not reported | [1145869] |
| Debian | bluez | source | trixie | (unfixed) | not yet assigned | Not reported | [1145869] |
| Debian | bluez | source | bookworm | (unfixed) | not yet assigned | Not reported | [1145869] |
| Ubuntu | bluez | deb | noble | 5.72-0ubuntu5.7 | Not reported | Not reported | Not reported |
| Ubuntu | bluetooth | deb | noble | 5.72-0ubuntu5.7 | Not reported | Not reported | Not reported |
| Ubuntu | bluez-cups | deb | noble | 5.72-0ubuntu5.7 | Not reported | Not reported | Not reported |
| Ubuntu | bluez-hcidump | deb | noble | 5.72-0ubuntu5.7 | Not reported | Not reported | Not reported |
| Ubuntu | bluez-meshd | deb | noble | 5.72-0ubuntu5.7 | Not reported | Not reported | Not reported |
| Ubuntu | bluez-obexd | deb | noble | 5.72-0ubuntu5.7 | Not reported | Not reported | Not reported |
| Ubuntu | bluez-source | deb | noble | 5.72-0ubuntu5.7 | Not reported | Not reported | Not reported |
| Ubuntu | bluez-test-scripts | deb | noble | 5.72-0ubuntu5.7 | Not reported | Not reported | Not reported |
| Ubuntu | bluez-test-tools | deb | noble | 5.72-0ubuntu5.7 | Not reported | Not reported | Not reported |
| Ubuntu | libbluetooth-dev | deb | noble | 5.72-0ubuntu5.7 | Not reported | Not reported | Not reported |
| Ubuntu | libbluetooth3 | deb | noble | 5.72-0ubuntu5.7 | Not reported | Not reported | Not reported |
Notes
[trixie] bluez: Minor issue [bookworm] bluez: Minor issue
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [bluetooth]Affected
Source package: [bluez]
Details (4)
5.66-1+deb12u2· all · bookwormAffected
nvd · bluez · debian · bookworm; nvd · bluez · debian · 12
5.66-1+deb12u2· all · bookwormAffected
nvd · bluez · debian · bookworm; nvd · bluez · debian · 12
5.66-1+deb12u1· all · bookworm-securityAffected
nvd · bluez · debian · bookworm; nvd · bluez · debian · 12
5.66-1+deb12u1· all · bookworm-securityAffected
nvd · bluez · debian · bookworm; nvd · bluez · debian · 12
- [bluez]Affected
Details (4)
5.66-1+deb12u2· amd64 · bookwormAffected
nvd · bluez · debian · bookworm; nvd · bluez · debian · 12
5.66-1+deb12u2· arm64 · bookwormAffected
nvd · bluez · debian · bookworm; nvd · bluez · debian · 12
5.66-1+deb12u1· amd64 · bookworm-securityAffected
nvd · bluez · debian · bookworm; nvd · bluez · debian · 12
5.66-1+deb12u1· arm64 · bookworm-securityAffected
nvd · bluez · debian · bookworm; nvd · bluez · debian · 12
- [bluez-cups]Affected
Source package: [bluez]
Details (4)
5.66-1+deb12u2· amd64 · bookwormAffected
nvd · bluez · debian · bookworm; nvd · bluez · debian · 12
5.66-1+deb12u2· arm64 · bookwormAffected
nvd · bluez · debian · bookworm; nvd · bluez · debian · 12
5.66-1+deb12u1· amd64 · bookworm-securityAffected
nvd · bluez · debian · bookworm; nvd · bluez · debian · 12
5.66-1+deb12u1· arm64 · bookworm-securityAffected
nvd · bluez · debian · bookworm; nvd · bluez · debian · 12
- [bluez-hcidump]Affected
Source package: [bluez]
Details (4)
5.66-1+deb12u2· amd64 · bookwormAffected
nvd · bluez · debian · bookworm; nvd · bluez · debian · 12
5.66-1+deb12u2· arm64 · bookwormAffected
nvd · bluez · debian · bookworm; nvd · bluez · debian · 12
5.66-1+deb12u1· amd64 · bookworm-securityAffected
nvd · bluez · debian · bookworm; nvd · bluez · debian · 12
5.66-1+deb12u1· arm64 · bookworm-securityAffected
nvd · bluez · debian · bookworm; nvd · bluez · debian · 12
- [bluez-meshd]Affected
Source package: [bluez]
Details (4)
5.66-1+deb12u2· amd64 · bookwormAffected
nvd · bluez · debian · bookworm; nvd · bluez · debian · 12
5.66-1+deb12u2· arm64 · bookwormAffected
nvd · bluez · debian · bookworm; nvd · bluez · debian · 12
5.66-1+deb12u1· amd64 · bookworm-securityAffected
nvd · bluez · debian · bookworm; nvd · bluez · debian · 12
5.66-1+deb12u1· arm64 · bookworm-securityAffected
nvd · bluez · debian · bookworm; nvd · bluez · debian · 12
- [bluez-obexd]Affected
Source package: [bluez]
Details (4)
5.66-1+deb12u2· amd64 · bookwormAffected
nvd · bluez · debian · bookworm; nvd · bluez · debian · 12
5.66-1+deb12u2· arm64 · bookwormAffected
nvd · bluez · debian · bookworm; nvd · bluez · debian · 12
5.66-1+deb12u1· amd64 · bookworm-securityAffected
nvd · bluez · debian · bookworm; nvd · bluez · debian · 12
5.66-1+deb12u1· arm64 · bookworm-securityAffected
nvd · bluez · debian · bookworm; nvd · bluez · debian · 12
- [bluez-source]Affected
Source package: [bluez]
Details (4)
5.66-1+deb12u2· all · bookwormAffected
nvd · bluez · debian · bookworm; nvd · bluez · debian · 12
5.66-1+deb12u2· all · bookwormAffected
nvd · bluez · debian · bookworm; nvd · bluez · debian · 12
5.66-1+deb12u1· all · bookworm-securityAffected
nvd · bluez · debian · bookworm; nvd · bluez · debian · 12
5.66-1+deb12u1· all · bookworm-securityAffected
nvd · bluez · debian · bookworm; nvd · bluez · debian · 12
- [bluez-test-scripts]Affected
Source package: [bluez]
Details (4)
5.66-1+deb12u2· all · bookwormAffected
nvd · bluez · debian · bookworm; nvd · bluez · debian · 12
5.66-1+deb12u2· all · bookwormAffected
nvd · bluez · debian · bookworm; nvd · bluez · debian · 12
5.66-1+deb12u1· all · bookworm-securityAffected
nvd · bluez · debian · bookworm; nvd · bluez · debian · 12
5.66-1+deb12u1· all · bookworm-securityAffected
nvd · bluez · debian · bookworm; nvd · bluez · debian · 12
- [bluez-test-tools]Affected
Source package: [bluez]
Details (4)
5.66-1+deb12u2· amd64 · bookwormAffected
nvd · bluez · debian · bookworm; nvd · bluez · debian · 12
5.66-1+deb12u2· arm64 · bookwormAffected
nvd · bluez · debian · bookworm; nvd · bluez · debian · 12
5.66-1+deb12u1· amd64 · bookworm-securityAffected
nvd · bluez · debian · bookworm; nvd · bluez · debian · 12
5.66-1+deb12u1· arm64 · bookworm-securityAffected
nvd · bluez · debian · bookworm; nvd · bluez · debian · 12
- [libbluetooth3]Affected
Source package: [bluez]
Details (4)
5.66-1+deb12u2· amd64 · bookwormAffected
nvd · bluez · debian · bookworm; nvd · bluez · debian · 12
5.66-1+deb12u2· arm64 · bookwormAffected
nvd · bluez · debian · bookworm; nvd · bluez · debian · 12
5.66-1+deb12u1· amd64 · bookworm-securityAffected
nvd · bluez · debian · bookworm; nvd · bluez · debian · 12
5.66-1+deb12u1· arm64 · bookworm-securityAffected
nvd · bluez · debian · bookworm; nvd · bluez · debian · 12
- [libbluetooth-dev]Affected
Source package: [bluez]
Details (4)
5.66-1+deb12u2· amd64 · bookwormAffected
nvd · bluez · debian · bookworm; nvd · bluez · debian · 12
5.66-1+deb12u2· arm64 · bookwormAffected
nvd · bluez · debian · bookworm; nvd · bluez · debian · 12
5.66-1+deb12u1· amd64 · bookworm-securityAffected
nvd · bluez · debian · bookworm; nvd · bluez · debian · 12
5.66-1+deb12u1· arm64 · bookworm-securityAffected
nvd · bluez · debian · bookworm; nvd · bluez · debian · 12
[Debian 13 (Trixie)]
- [bluetooth]Affected
Source package: [bluez]
Details (2)
5.82-1.1· all · trixieAffected
nvd · bluez · debian · 13
5.82-1.1· all · trixieAffected
nvd · bluez · debian · 13
- [bluez]Affected
Details (2)
5.82-1.1· amd64 · trixieAffected
nvd · bluez · debian · 13
5.82-1.1· arm64 · trixieAffected
nvd · bluez · debian · 13
- [bluez-cups]Affected
Source package: [bluez]
Details (2)
5.82-1.1· amd64 · trixieAffected
nvd · bluez · debian · 13
5.82-1.1· arm64 · trixieAffected
nvd · bluez · debian · 13
- [bluez-hcidump]Affected
Source package: [bluez]
Details (2)
5.82-1.1· amd64 · trixieAffected
nvd · bluez · debian · 13
5.82-1.1· arm64 · trixieAffected
nvd · bluez · debian · 13
- [bluez-meshd]Affected
Source package: [bluez]
Details (2)
5.82-1.1· amd64 · trixieAffected
nvd · bluez · debian · 13
5.82-1.1· arm64 · trixieAffected
nvd · bluez · debian · 13
- [bluez-obexd]Affected
Source package: [bluez]
Details (2)
5.82-1.1· amd64 · trixieAffected
nvd · bluez · debian · 13
5.82-1.1· arm64 · trixieAffected
nvd · bluez · debian · 13
- [bluez-source]Affected
Source package: [bluez]
Details (2)
5.82-1.1· all · trixieAffected
nvd · bluez · debian · 13
5.82-1.1· all · trixieAffected
nvd · bluez · debian · 13
- [bluez-test-scripts]Affected
Source package: [bluez]
Details (2)
5.82-1.1· all · trixieAffected
nvd · bluez · debian · 13
5.82-1.1· all · trixieAffected
nvd · bluez · debian · 13
- [bluez-test-tools]Affected
Source package: [bluez]
Details (2)
5.82-1.1· amd64 · trixieAffected
nvd · bluez · debian · 13
5.82-1.1· arm64 · trixieAffected
nvd · bluez · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-80186]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-80186]
- [https://security-tracker.debian.org/tracker/CVE-2026-80186]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80186.json]
- [https://ubuntu.com/security/notices/USN-8908-1]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-3023.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX] · [Ubuntu Security Notices (USN)]