CVE-2024-53207
Description
A flaw was found in the Linux kernel's Bluetooth subsystem. A local user with basic privileges can trigger a deadlock condition leading to a Denial of Service (DoS). This issue occurs due to improper locking synchronization when dequeuing Bluetooth management commands during device state changes, which causes kernel worker tasks to hang indefinitely.
Mitigation
To mitigate this vulnerability, prevent the Bluetooth kernel module from loading by blacklisting it:
1. Create a configuration file in `/etc/modprobe.d/`:
sh
echo "install bluetooth /bin/true" >> /etc/modprobe.d/disable-bluetooth.conf
echo "blacklist bluetooth" >> /etc/modprobe.d/disable-bluetooth.conf
2. If the module is currently loaded, unload it or restart the system:
sh
modprobe -r bluetooth
Warning: Disabling the `bluetooth` module prevents all Bluetooth hardware and related peripherals from operating. A system reboot may be required if the module is actively in use and cannot be unloaded.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 5.7 | 5.5 | 7.8 |
| Attack Vector | Adjacent Network | Local | Local |
| Attack Complexity | Low | Low | Low |
| Privileges Required | Low | Low | Low |
| User Interaction | None | None | None |
| Scope | Unchanged | Unchanged | Unchanged |
| Confidentiality | None | None | High |
| Integrity Impact | None | None | High |
| Availability Impact | High | High | High |
Vector
Red Hat: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
cve.org: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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