Use After Free Affecting bluez package, versions <5.55-3.1+deb11u2


Severity

Recommended
0.0
critical
0
10

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Threat Intelligence

EPSS
1.66% (75th percentile)

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  • Snyk IDSNYK-DEBIAN11-BLUEZ-1911958
  • published5 Nov 2021
  • disclosed4 Nov 2021

Introduced: 4 Nov 2021

CVE-2021-43400  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Debian:11 bluez to version 5.55-3.1+deb11u2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream bluez package and not the bluez package as distributed by Debian. See How to fix? for Debian:11 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1