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CVE-2021-43400

nvd nist
Published: Nov 4, 2021Modified: Jun 17, 2026

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9.1
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Exploitability: 3.9 / Impact: 5.2
Source: NVD

Description

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.

Affected (2)

Bluez
1 product
Bluez
Debian
1 product
Debian Linux
Configuration A
1 vulnerable
Vulnerable SoftwareAffected Versions
Bluez
Version 5.61
Configuration B
1 vulnerable
Vulnerable SoftwareAffected Versions
Debian Linux
Version 10.0

Related CWEs

CWE-416
Use After Free
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

References (5)

Source: cve@mitre.org
Mailing ListPatchThird Party Advisory
Source: cve@mitre.org
Mailing ListThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing ListPatchThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing ListThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108

Timeline

No history available yet.