CVE-2021-43400: Use After Free
First published: Thu Nov 04 2021(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| BlueZ BlueZ | =5.61 | |
| Debian Debian Linux | =10.0 |
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Reference Links
Frequently Asked Questions
What is CVE-2021-43400?
CVE-2021-43400 is a vulnerability discovered in BlueZ 5.61 that allows for a use-after-free condition when a client disconnects during D-Bus processing of a WriteValue call.
How severe is CVE-2021-43400?
CVE-2021-43400 has a severity rating of 9.1, which is considered critical.
What software versions are affected by CVE-2021-43400?
BlueZ 5.61 and Debian Linux 10.0 are affected by CVE-2021-43400.
How can I fix CVE-2021-43400?
To fix CVE-2021-43400, it is recommended to update to a patched version of BlueZ 5.61 or Debian Linux 10.0.
Where can I find more information about CVE-2021-43400?
More information about CVE-2021-43400 can be found at the following references: [Link 1](https://git.kernel.org/pub/scm/bluetooth/bluez.git/commit/?id=838c0dc7641e1c991c0f3027bf94bee4606012f8), [Link 2](https://lists.debian.org/debian-lts-announce/2022/10/msg00026.html).
- collector/nvd-index
- agent/severity
- agent/weakness
- agent/references
- agent/author
- agent/tags
- agent/type
- agent/event
- agent/description
- agent/remedy
- agent/softwarecombine
- agent/last-modified-date
- agent/first-publish-date
- collector/mitre-cve
- source/MITRE
- vendor/bluez
- canonical/bluez bluez
- version/bluez bluez/5.61
- vendor/debian
- canonical/debian debian linux
- version/debian debian linux/10.0