CVE-2022-4662
Description
An incorrect access control flaw was found in the Linux kernel USB core subsystem. When attaching a malicious usb device, the recursive locking violation in usb-storage can cause the kernel to deadlock. This issue could allow a local user to crash the system.
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 | 4.3 | 5.5 | 5.5 |
| Attack Vector | Physical | Local | Local |
| Attack Complexity | Low | Low | Low |
| Privileges Required | Low | Low | Low |
| User Interaction | None | None | None |
| Scope | Unchanged | Unchanged | Unchanged |
| Confidentiality | None | None | None |
| Integrity Impact | None | None | None |
| Availability Impact | High | High | High |
Vector
Red Hat: CVSS:3.1/AV:P/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:N/I:N/A:H
Red Hat CVSS v3 Score Explanation
For the Red Hat Enterprise Linux, the Kernel config param CONFIG_USB_GADGET is not set. So, the driver needed for the known reproducer not included (and attacker would also need privileges to load the module). The attacker would have to be physically in front of the computer with a malicious device in hand, so AV:P.
Understanding the Weakness (CWE)
Integrity,Other
Technical Impact: Modify Application Data; Alter Execution Logic
The application could be placed in an insecure state that may allow an attacker to modify sensitive data or allow unintended logic to be executed.
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