CVE-2026-98460
Description
A flaw was found in the Linux kernel's Bluetooth subsystem. This flaw allows a local, unprivileged user to bypass security restrictions and send unauthorized commands directly to the Bluetooth hardware. The vulnerability exists because the Host Controller Interface (HCI) raw socket improperly filters command identifiers, masking out-of-range values instead of rejecting them, which causes restricted commands to be erroneously accepted as allowlisted ones.
Statement
Red Hat rates this vulnerability as Moderate impact because exploitation requires local unprivileged user execution on a host with an operational Bluetooth controller, restricting the potential blast radius. Default server deployments of Red Hat Enterprise Linux rarely utilize Bluetooth hardware, which significantly minimizes real-world risk across typical enterprise environments. While an attacker can leverage flawed HCI socket filtering to dispatch reserved opcodes, the ultimate handling of these commands is constrained by the physical controller, preventing direct privilege escalation.
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 | 4.4 | N/A | N/A |
| Attack Vector | Local | N/A | N/A |
| Attack Complexity | Low | N/A | N/A |
| Privileges Required | Low | N/A | N/A |
| User Interaction | None | N/A | N/A |
| Scope | Unchanged | N/A | N/A |
| Confidentiality | None | N/A | N/A |
| Integrity Impact | Low | N/A | N/A |
| Availability Impact | Low | N/A | N/A |
Vector
Red Hat: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
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