Vulnerability 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.
CVSS Score
9.1
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Bluez | Bluez | 5.61 |
| Debian | Debian Linux | 10.0 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/pub/scm/bluetooth/bluez.git/commit/?id=838c0dc7641e1c991cMailing ListPatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/10/msg00026.htmlMailing ListThird Party Advisory
- https://git.kernel.org/pub/scm/bluetooth/bluez.git/commit/?id=838c0dc7641e1c991cMailing ListPatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/10/msg00026.htmlMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2024/09/msg00022.html
FAQ
What is CVE-2021-43400?
CVE-2021-43400 is a vulnerability with a CVSS score of 9.1 (CRITICAL). 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.
How severe is CVE-2021-43400?
CVE-2021-43400 has been rated CRITICAL with a CVSS base score of 9.1/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2021-43400?
Check the references section above for vendor advisories and patch information. Affected products include: Bluez Bluez, Debian Debian Linux.