CVE-2026-74467
Description
A flaw was found in the s390/qeth component of the Linux kernel. An unprivileged local user could exploit this vulnerability by invoking specific SIOCDEVPRIVATE ioctl commands, such as SIOC_QETH_ADP_SET_SNMP_CONTROL, SIOC_QETH_GET_CARD_TYPE, and SIOC_QETH_QUERY_OAT. These commands were not properly restricted by the CAP_NET_ADMIN capability check, allowing unauthorized access to network administration functions. This could lead to a privilege escalation, enabling the unprivileged user to perform actions reserved for privileged accounts.
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 | 5.5 | N/A | 7.8 |
| Attack Vector | Local | N/A | Local |
| Attack Complexity | Low | N/A | Low |
| Privileges Required | Low | N/A | Low |
| User Interaction | None | N/A | None |
| Scope | Unchanged | N/A | Unchanged |
| Confidentiality | None | N/A | High |
| Integrity Impact | None | N/A | High |
| Availability Impact | High | N/A | High |
Vector
Red Hat: 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:H/I:H/A:H
Understanding the Weakness (CWE)
Access Control
Technical Impact: Gain Privileges or Assume Identity
An attacker may be able to elevate privileges.
Confidentiality
Technical Impact: Read Application Data
An attacker may be able to obtain sensitive information.
Integrity,Confidentiality,Availability
Technical Impact: Execute Unauthorized Code or Commands
An attacker may be able to execute code.
Frequently Asked Questions
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