CVE-2023-54105
Description
A missing input validation was found in the Linux kernel's CAN ISO-TP protocol implementation. The isotp_bind() function does not verify that the address family in the sockaddr structure is AF_CAN. This allows bind calls with incorrect address families (such as AF_XDP) to succeed without proper error notification to userspace.
Statement
The commit explicitly states this issue "has no functional impact" — the bind operation works correctly regardless of the address family value provided. This is purely an input validation improvement to return proper error codes to userspace applications using incorrect address families. There is no crash, memory corruption, or security vulnerability.
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 | 0 | 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 | None | 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:N
Understanding the Weakness (CWE)
Other
Technical Impact: Varies by Context
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