CVE-2022-50706
Description
A flaw was found in the Linux kernel's IEEE 802.15.4 networking subsystem. A local user can trigger a kernel warning (WARN) by sending a zero-sized packet via raw_sendmsg() on a PF_IEEE802154 socket. This causes skb_assert_len() to fire when the zero-length packet reaches __dev_queue_xmit().
Statement
This issue results in a kernel warning rather than a crash or exploitable condition. The warning is triggered by sending a zero-sized packet on an IEEE 802.15.4 raw socket, which requires local access and CAP_NET_RAW capability. The impact is limited to log noise and potential performance degradation from repeated warnings.
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 | 3.3 | 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 | Low | 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:L
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