CVE-2021-43400

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.

Category

9.1
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.12%
Third-Party Advisory kernel.org Third-Party Advisory debian.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://git.kernel.org/pub/scm/bluetooth/bluez.git/commit/?id=838c0dc7641e1c991c0f3027bf94bee4606012f8 mailing list third party advisory patch
https://lists.debian.org/debian-lts-announce/2022/10/msg00026.html third party advisory mailing list

Frequently Asked Questions

What is the severity of CVE-2021-43400?
CVE-2021-43400 has been scored as a critical severity vulnerability.
How to fix CVE-2021-43400?
To fix CVE-2021-43400, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-43400 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-43400 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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