CVE-2024-36968
Description
in linux kernel bluetooth L2CAP, l2cap_le_flowctl_init() can cause both div-by-zero and an integer overflow since hdev->le_mtu may not fall in the valid range.
Statement
This flaw is rated as Moderate severity because exploitation results exclusively in a kernel denial of service (system crash) with no direct compromise to system confidentiality or integrity. On typical Red Hat Enterprise Linux server installations, Bluetooth hardware and drivers are either not present or disabled by default, significantly limiting exposure. Systems are only vulnerable if an attacker can deliver malformed Low Energy connection parameters to an active Bluetooth interface or emulated HCI device.
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).
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 5.5 | 6.5 | 7.6 |
| Attack Vector | Local | Local | Adjacent Network |
| Attack Complexity | Low | Low | Low |
| Privileges Required | Low | Low | None |
| User Interaction | None | None | None |
| Scope | Unchanged | Changed | Unchanged |
| Confidentiality | None | None | Low |
| Integrity Impact | None | None | Low |
| Availability Impact | High | High | High |
Vector
Red Hat: CVSS:3.1/AV:L/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:C/C:N/I:N/A:H
cve.org: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
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