UBUNTU-CVE-2021-43400

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Source
https://ubuntu.com/security/CVE-2021-43400
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-43400.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2021-43400
Upstream
Downstream
Related
Published
2021-11-04T23:15:00Z
Modified
2025-07-18T16:47:02Z
Severity
  • 9.1 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

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.

References

Affected packages

Ubuntu:Pro:16.04:LTS / bluez

Package

Name
bluez
Purl
pkg:deb/ubuntu/bluez@5.37-0ubuntu5.3+esm5?arch=source&distro=esm-infra/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

5.*

5.35-0ubuntu2
5.36-0ubuntu1
5.37-0ubuntu5
5.37-0ubuntu5.1
5.37-0ubuntu5.3
5.37-0ubuntu5.3+esm1
5.37-0ubuntu5.3+esm2
5.37-0ubuntu5.3+esm3
5.37-0ubuntu5.3+esm4
5.37-0ubuntu5.3+esm5

Ubuntu:18.04:LTS / bluez

Package

Name
bluez
Purl
pkg:deb/ubuntu/bluez@5.48-0ubuntu3.6?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5.48-0ubuntu3.6

Affected versions

5.*

5.46-0ubuntu3
5.46-0ubuntu4
5.48-0ubuntu3
5.48-0ubuntu3.1
5.48-0ubuntu3.2
5.48-0ubuntu3.3
5.48-0ubuntu3.4
5.48-0ubuntu3.5

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "bluetooth",
            "binary_version": "5.48-0ubuntu3.6"
        },
        {
            "binary_name": "bluez",
            "binary_version": "5.48-0ubuntu3.6"
        },
        {
            "binary_name": "bluez-cups",
            "binary_version": "5.48-0ubuntu3.6"
        },
        {
            "binary_name": "bluez-dbg",
            "binary_version": "5.48-0ubuntu3.6"
        },
        {
            "binary_name": "bluez-hcidump",
            "binary_version": "5.48-0ubuntu3.6"
        },
        {
            "binary_name": "bluez-obexd",
            "binary_version": "5.48-0ubuntu3.6"
        },
        {
            "binary_name": "bluez-tests",
            "binary_version": "5.48-0ubuntu3.6"
        },
        {
            "binary_name": "libbluetooth-dev",
            "binary_version": "5.48-0ubuntu3.6"
        },
        {
            "binary_name": "libbluetooth3",
            "binary_version": "5.48-0ubuntu3.6"
        },
        {
            "binary_name": "libbluetooth3-dbg",
            "binary_version": "5.48-0ubuntu3.6"
        }
    ]
}

Ubuntu:20.04:LTS / bluez

Package

Name
bluez
Purl
pkg:deb/ubuntu/bluez@5.53-0ubuntu3.4?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5.53-0ubuntu3.4

Affected versions

5.*

5.50-0ubuntu4
5.51-0ubuntu1
5.51-0ubuntu2
5.52-0ubuntu1
5.52-0ubuntu2
5.53-0ubuntu1
5.53-0ubuntu2
5.53-0ubuntu3
5.53-0ubuntu3.1
5.53-0ubuntu3.2
5.53-0ubuntu3.3

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "bluetooth",
            "binary_version": "5.53-0ubuntu3.4"
        },
        {
            "binary_name": "bluez",
            "binary_version": "5.53-0ubuntu3.4"
        },
        {
            "binary_name": "bluez-cups",
            "binary_version": "5.53-0ubuntu3.4"
        },
        {
            "binary_name": "bluez-dbg",
            "binary_version": "5.53-0ubuntu3.4"
        },
        {
            "binary_name": "bluez-hcidump",
            "binary_version": "5.53-0ubuntu3.4"
        },
        {
            "binary_name": "bluez-obexd",
            "binary_version": "5.53-0ubuntu3.4"
        },
        {
            "binary_name": "bluez-tests",
            "binary_version": "5.53-0ubuntu3.4"
        },
        {
            "binary_name": "libbluetooth-dev",
            "binary_version": "5.53-0ubuntu3.4"
        },
        {
            "binary_name": "libbluetooth3",
            "binary_version": "5.53-0ubuntu3.4"
        },
        {
            "binary_name": "libbluetooth3-dbg",
            "binary_version": "5.53-0ubuntu3.4"
        }
    ]
}