CVE-2022-3806CWE-415

Bluetooth HCI Error Handling Double Free

Critical · published January 19, 2023

CVSS v3.1
9.8
EPSS
1%
Percentile
62.7
In the wild
Unconfirmed
What it is

🔥 A double free condition in Bluetooth's HCI could leave your network buffer vulnerable, all thanks to inconsistent error handling! Think of it as a waiter at a busy restaurant accidentally trying to serve the same dish twice, leaving one of them to spoil in the kitchen. This can lead to chaos in the dining room, just like this vulnerability can result in erratic behavior in your Bluetooth connections. An attacker could exploit this flaw to cause devastating crashes or unpredictable behavior in devices that rely on Bluetooth, potentially leading to data loss or system instability. If your device is connected, it might be forced into a dangerous state, leaving it open to further attacks or disruptions.

Put simply

Think of it as a waiter at a busy restaurant accidentally trying to serve the same dish twice, leaving one of them to spoil in the kitchen. This can lead to chaos in the dining room, just like this vulnerability can result in erratic behavior in your Bluetooth connections. CVE-2022-3806 is due to uneven error management within Bluetooth's Host Controller Interface (HCI), which can trigger a double free condition of memory. This means that the same memory buffer could be freed twice, paving the way for various risks, including crashes.

What to do

An attacker could exploit this flaw to cause devastating crashes or unpredictable behavior in devices that rely on Bluetooth, potentially leading to data loss or system instability. If your device is connected, it might be forced into a dangerous state, leaving it open to further attacks or disruptions. Update your Bluetooth drivers to the latest version that addresses this vulnerability, and make sure to monitor any updates from your device manufacturers. Additionally, consider implementing checks in your error handling to avoid similar issues in the future. You can tackle this! Stay on top of your updates, and you’ll reinforce your defenses in no time! 🛡️

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.01006 · 62.7th percentile
Weakness
CWE-415 · Double Free
Published
2023-01-19T00:00Z
EPSS history
Timeline
  • 19 JAN 00:00Z
    Bluetooth HCI Error Handling Double Free
    cvelistv5