CVE-2022-50627
Description
A null pointer dereference vulnerability was found in the ath11k wireless driver in the Linux kernel. When an interface is brought up in monitor mode, the driver attempts to extract packet type from RAW monitor ring packets, which lack the expected structure. This causes a kernel crash due to dereferencing a null pointer during SKB processing.
Statement
This flaw requires local access and specific hardware (Qualcomm ath11k-based WiFi adapters like QCN9074). Monitor mode is typically used for network analysis and requires elevated privileges to enable.
Mitigation
To mitigate this issue, prevent the ath11k module from being loaded. See https://access.redhat.com/solutions/41278 for instructions.
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 | 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 | None | N/A | N/A |
| Availability Impact | High | N/A | N/A |
Vector
Red Hat: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Understanding the Weakness (CWE)
Integrity
Technical Impact: Unexpected State
Frequently Asked Questions
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