CVE catalog
CVE-2021-43400
bluez: CVE-2021-43400
- Severity
- Medium · CVSS 4.8
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 1.66% · Oct 25, 2026
An issue was discovered in gatt-database.c in BlueZ 5.61. A use-after-free can occur when a client disconnects during D-Bus processing of a WriteValue call.
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 | fixed |
| Debian | bluez | bookworm | 5.66-1+deb12u2 | fixed |
| Debian | bluez | bookworm-security | 5.66-1+deb12u1 | fixed |
| Ubuntu | bluez | pro | 5.35-0ubuntu2 | vulnerable |
| Ubuntu | bluez | pro | 5.36-0ubuntu1 | vulnerable |
| Ubuntu | bluez | pro | 5.37-0ubuntu5 | vulnerable |
| Ubuntu | bluez | pro | 5.37-0ubuntu5.1 | vulnerable |
| Ubuntu | bluez | pro | 5.37-0ubuntu5.3 | vulnerable |
| Ubuntu | bluez | pro | 5.37-0ubuntu5.3+esm1 | vulnerable |
| Ubuntu | bluez | pro | 5.37-0ubuntu5.3+esm2 | vulnerable |
| Ubuntu | bluez | pro | 5.37-0ubuntu5.3+esm3 | vulnerable |
| Ubuntu | bluez | pro | 5.37-0ubuntu5.3+esm4 | vulnerable |
| Ubuntu | bluez | pro | 5.37-0ubuntu5.3+esm5 | vulnerable |
| Ubuntu | bluez | pro | 5.37-0ubuntu5.3+esm6 | vulnerable |
| Ubuntu | bluez | 18.04 | 5.46-0ubuntu3 | vulnerable |
| Ubuntu | bluez | 18.04 | 5.46-0ubuntu4 | vulnerable |
| Ubuntu | bluez | 18.04 | 5.48-0ubuntu3 | vulnerable |
| Ubuntu | bluez | 18.04 | 5.48-0ubuntu3.1 | vulnerable |
| Ubuntu | bluez | 18.04 | 5.48-0ubuntu3.2 | vulnerable |
| Ubuntu | bluez | 18.04 | 5.48-0ubuntu3.3 | vulnerable |
| Ubuntu | bluez | 18.04 | 5.48-0ubuntu3.4 | vulnerable |
| Ubuntu | bluez | 18.04 | 5.48-0ubuntu3.5 | vulnerable |
| Ubuntu | bluez | 18.04 | 5.48-0ubuntu3.6 | fixed |
| Ubuntu | bluez | 20.04 | 5.50-0ubuntu4 | vulnerable |
| Ubuntu | bluez | 20.04 | 5.51-0ubuntu1 | vulnerable |
| Ubuntu | bluez | 20.04 | 5.51-0ubuntu2 | vulnerable |
| Ubuntu | bluez | 20.04 | 5.52-0ubuntu1 | vulnerable |
| Ubuntu | bluez | 20.04 | 5.52-0ubuntu2 | vulnerable |
| Ubuntu | bluez | 20.04 | 5.53-0ubuntu1 | vulnerable |
| Ubuntu | bluez | 20.04 | 5.53-0ubuntu2 | vulnerable |
| Ubuntu | bluez | 20.04 | 5.53-0ubuntu3 | vulnerable |
| Ubuntu | bluez | 20.04 | 5.53-0ubuntu3.1 | vulnerable |
| Ubuntu | bluez | 20.04 | 5.53-0ubuntu3.2 | vulnerable |
| Ubuntu | bluez | 20.04 | 5.53-0ubuntu3.3 | vulnerable |
| Ubuntu | bluez | 20.04 | 5.53-0ubuntu3.4 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | bluez | source | sid | 5.62-1 | not yet assigned | Not reported | [998626] |
| Debian | bluez | source | forky | 5.62-1 | not yet assigned | Not reported | [998626] |
| Debian | bluez | source | trixie | 5.62-1 | not yet assigned | Not reported | [998626] |
| Debian | bluez | source | bookworm | 5.62-1 | not yet assigned | Not reported | [998626] |
| Ubuntu | bluez | deb | 18.04 | 5.48-0ubuntu3.6 | Not reported | UBUNTU-CVE-2021-43400 | Not reported |
| Ubuntu | bluez | deb | 20.04 | 5.53-0ubuntu3.4 | Not reported | UBUNTU-CVE-2021-43400 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [bluetooth]Fixed
Source package: [bluez]
Details (4)
5.66-1+deb12u2· all · bookwormFixed · Fixed:
5.62-1dsa · bluez · debian · bookworm; dsa · bluez · debian · 12
5.66-1+deb12u2· all · bookwormFixed · Fixed:
5.62-1dsa · bluez · debian · bookworm; dsa · bluez · debian · 12
5.66-1+deb12u1· all · bookworm-securityFixed · Fixed:
5.62-1dsa · bluez · debian · bookworm; dsa · bluez · debian · 12
5.66-1+deb12u1· all · bookworm-securityFixed · Fixed:
5.62-1dsa · bluez · debian · bookworm; dsa · bluez · debian · 12
- [bluez]Fixed
Details (4)
5.66-1+deb12u2· amd64 · bookwormFixed · Fixed:
5.62-1dsa · bluez · debian · bookworm; dsa · bluez · debian · 12
5.66-1+deb12u2· arm64 · bookwormFixed · Fixed:
5.62-1dsa · bluez · debian · bookworm; dsa · bluez · debian · 12
5.66-1+deb12u1· amd64 · bookworm-securityFixed · Fixed:
5.62-1dsa · bluez · debian · bookworm; dsa · bluez · debian · 12
5.66-1+deb12u1· arm64 · bookworm-securityFixed · Fixed:
5.62-1dsa · bluez · debian · bookworm; dsa · bluez · debian · 12
- [bluez-cups]Fixed
Source package: [bluez]
Details (4)
5.66-1+deb12u2· amd64 · bookwormFixed · Fixed:
5.62-1dsa · bluez · debian · bookworm; dsa · bluez · debian · 12
5.66-1+deb12u2· arm64 · bookwormFixed · Fixed:
5.62-1dsa · bluez · debian · bookworm; dsa · bluez · debian · 12
5.66-1+deb12u1· amd64 · bookworm-securityFixed · Fixed:
5.62-1dsa · bluez · debian · bookworm; dsa · bluez · debian · 12
5.66-1+deb12u1· arm64 · bookworm-securityFixed · Fixed:
5.62-1dsa · bluez · debian · bookworm; dsa · bluez · debian · 12
- [bluez-hcidump]Fixed
Source package: [bluez]
Details (4)
5.66-1+deb12u2· amd64 · bookwormFixed · Fixed:
5.62-1dsa · bluez · debian · bookworm; dsa · bluez · debian · 12
5.66-1+deb12u2· arm64 · bookwormFixed · Fixed:
5.62-1dsa · bluez · debian · bookworm; dsa · bluez · debian · 12
5.66-1+deb12u1· amd64 · bookworm-securityFixed · Fixed:
5.62-1dsa · bluez · debian · bookworm; dsa · bluez · debian · 12
5.66-1+deb12u1· arm64 · bookworm-securityFixed · Fixed:
5.62-1dsa · bluez · debian · bookworm; dsa · bluez · debian · 12
- [bluez-meshd]Fixed
Source package: [bluez]
Details (4)
5.66-1+deb12u2· amd64 · bookwormFixed · Fixed:
5.62-1dsa · bluez · debian · bookworm; dsa · bluez · debian · 12
5.66-1+deb12u2· arm64 · bookwormFixed · Fixed:
5.62-1dsa · bluez · debian · bookworm; dsa · bluez · debian · 12
5.66-1+deb12u1· amd64 · bookworm-securityFixed · Fixed:
5.62-1dsa · bluez · debian · bookworm; dsa · bluez · debian · 12
5.66-1+deb12u1· arm64 · bookworm-securityFixed · Fixed:
5.62-1dsa · bluez · debian · bookworm; dsa · bluez · debian · 12
- [bluez-obexd]Fixed
Source package: [bluez]
Details (4)
5.66-1+deb12u2· amd64 · bookwormFixed · Fixed:
5.62-1dsa · bluez · debian · bookworm; dsa · bluez · debian · 12
5.66-1+deb12u2· arm64 · bookwormFixed · Fixed:
5.62-1dsa · bluez · debian · bookworm; dsa · bluez · debian · 12
5.66-1+deb12u1· amd64 · bookworm-securityFixed · Fixed:
5.62-1dsa · bluez · debian · bookworm; dsa · bluez · debian · 12
5.66-1+deb12u1· arm64 · bookworm-securityFixed · Fixed:
5.62-1dsa · bluez · debian · bookworm; dsa · bluez · debian · 12
- [bluez-source]Fixed
Source package: [bluez]
Details (4)
5.66-1+deb12u2· all · bookwormFixed · Fixed:
5.62-1dsa · bluez · debian · bookworm; dsa · bluez · debian · 12
5.66-1+deb12u2· all · bookwormFixed · Fixed:
5.62-1dsa · bluez · debian · bookworm; dsa · bluez · debian · 12
5.66-1+deb12u1· all · bookworm-securityFixed · Fixed:
5.62-1dsa · bluez · debian · bookworm; dsa · bluez · debian · 12
5.66-1+deb12u1· all · bookworm-securityFixed · Fixed:
5.62-1dsa · bluez · debian · bookworm; dsa · bluez · debian · 12
- [bluez-test-scripts]Fixed
Source package: [bluez]
Details (4)
5.66-1+deb12u2· all · bookwormFixed · Fixed:
5.62-1dsa · bluez · debian · bookworm; dsa · bluez · debian · 12
5.66-1+deb12u2· all · bookwormFixed · Fixed:
5.62-1dsa · bluez · debian · bookworm; dsa · bluez · debian · 12
5.66-1+deb12u1· all · bookworm-securityFixed · Fixed:
5.62-1dsa · bluez · debian · bookworm; dsa · bluez · debian · 12
5.66-1+deb12u1· all · bookworm-securityFixed · Fixed:
5.62-1dsa · bluez · debian · bookworm; dsa · bluez · debian · 12
- [bluez-test-tools]Fixed
Source package: [bluez]
Details (4)
5.66-1+deb12u2· amd64 · bookwormFixed · Fixed:
5.62-1dsa · bluez · debian · bookworm; dsa · bluez · debian · 12
5.66-1+deb12u2· arm64 · bookwormFixed · Fixed:
5.62-1dsa · bluez · debian · bookworm; dsa · bluez · debian · 12
5.66-1+deb12u1· amd64 · bookworm-securityFixed · Fixed:
5.62-1dsa · bluez · debian · bookworm; dsa · bluez · debian · 12
5.66-1+deb12u1· arm64 · bookworm-securityFixed · Fixed:
5.62-1dsa · bluez · debian · bookworm; dsa · bluez · debian · 12
- [libbluetooth3]Fixed
Source package: [bluez]
Details (4)
5.66-1+deb12u2· amd64 · bookwormFixed · Fixed:
5.62-1dsa · bluez · debian · bookworm; dsa · bluez · debian · 12
5.66-1+deb12u2· arm64 · bookwormFixed · Fixed:
5.62-1dsa · bluez · debian · bookworm; dsa · bluez · debian · 12
5.66-1+deb12u1· amd64 · bookworm-securityFixed · Fixed:
5.62-1dsa · bluez · debian · bookworm; dsa · bluez · debian · 12
5.66-1+deb12u1· arm64 · bookworm-securityFixed · Fixed:
5.62-1dsa · bluez · debian · bookworm; dsa · bluez · debian · 12
- [libbluetooth-dev]Fixed
Source package: [bluez]
Details (4)
5.66-1+deb12u2· amd64 · bookwormFixed · Fixed:
5.62-1dsa · bluez · debian · bookworm; dsa · bluez · debian · 12
5.66-1+deb12u2· arm64 · bookwormFixed · Fixed:
5.62-1dsa · bluez · debian · bookworm; dsa · bluez · debian · 12
5.66-1+deb12u1· amd64 · bookworm-securityFixed · Fixed:
5.62-1dsa · bluez · debian · bookworm; dsa · bluez · debian · 12
5.66-1+deb12u1· arm64 · bookworm-securityFixed · Fixed:
5.62-1dsa · bluez · debian · bookworm; dsa · bluez · debian · 12
[Debian 13 (Trixie)]
- [bluetooth]Fixed
Source package: [bluez]
Details (2)
5.82-1.1· all · trixieFixed · Fixed:
5.62-1dsa · bluez · debian · 13
5.82-1.1· all · trixieFixed · Fixed:
5.62-1dsa · bluez · debian · 13
- [bluez]Fixed
Details (2)
5.82-1.1· amd64 · trixieFixed · Fixed:
5.62-1dsa · bluez · debian · 13
5.82-1.1· arm64 · trixieFixed · Fixed:
5.62-1dsa · bluez · debian · 13
- [bluez-cups]Fixed
Source package: [bluez]
Details (2)
5.82-1.1· amd64 · trixieFixed · Fixed:
5.62-1dsa · bluez · debian · 13
5.82-1.1· arm64 · trixieFixed · Fixed:
5.62-1dsa · bluez · debian · 13
- [bluez-hcidump]Fixed
Source package: [bluez]
Details (2)
5.82-1.1· amd64 · trixieFixed · Fixed:
5.62-1dsa · bluez · debian · 13
5.82-1.1· arm64 · trixieFixed · Fixed:
5.62-1dsa · bluez · debian · 13
- [bluez-meshd]Fixed
Source package: [bluez]
Details (2)
5.82-1.1· amd64 · trixieFixed · Fixed:
5.62-1dsa · bluez · debian · 13
5.82-1.1· arm64 · trixieFixed · Fixed:
5.62-1dsa · bluez · debian · 13
- [bluez-obexd]Fixed
Source package: [bluez]
Details (2)
5.82-1.1· amd64 · trixieFixed · Fixed:
5.62-1dsa · bluez · debian · 13
5.82-1.1· arm64 · trixieFixed · Fixed:
5.62-1dsa · bluez · debian · 13
- [bluez-source]Fixed
Source package: [bluez]
Details (2)
5.82-1.1· all · trixieFixed · Fixed:
5.62-1dsa · bluez · debian · 13
5.82-1.1· all · trixieFixed · Fixed:
5.62-1dsa · bluez · debian · 13
- [bluez-test-scripts]Fixed
Source package: [bluez]
Details (2)
5.82-1.1· all · trixieFixed · Fixed:
5.62-1dsa · bluez · debian · 13
5.82-1.1· all · trixieFixed · Fixed:
5.62-1dsa · bluez · debian · 13
- [bluez-test-tools]Fixed
Source package: [bluez]
Details (2)
5.82-1.1· amd64 · trixieFixed · Fixed:
5.62-1dsa · bluez · debian · 13
5.82-1.1· arm64 · trixieFixed · Fixed:
5.62-1dsa · bluez · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/suse-su-2022_3981-1.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2021-43400]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2021-43400]
- [https://security-tracker.debian.org/tracker/CVE-2021-43400]
[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [SUSE security advisories and VEX]