CVE-2022-49856
Description
[REJECTED CVE] In the Linux kernel, the following vulnerability has been resolved: net: tun: call napi_schedule_prep() to ensure we own a napi
Statement
This CVE has been rejected by the Linux kernel community. Refer to the announcement: https://lore.kernel.org/linux-cve-announce/2025050832-REJECTED-cf29@gregkh/
The issue in tun driver was evaluated by the kernel community and explicitly rejected as a CVE candidate, as it does not cross any security boundaries. It results only in a WARN/OOPS condition with no privilege escalation, memory corruption, or information leak, and requires CAP_NET_ADMIN to trigger.
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 | 1.9 | N/A | N/A |
| Attack Vector | Local | N/A | N/A |
| Attack Complexity | High | N/A | N/A |
| Privileges Required | High | 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 | Low | N/A | N/A |
Vector
Red Hat: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L
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