CVE-2023-54218
Description
A data race was found in the Linux kernel's networking subsystem. In sock_recv_cmsgs(), the sk->sk_stamp field is read without using READ_ONCE(), while it can be concurrently written by another thread. This load-tearing issue was detected by KCSAN (Kernel Concurrency Sanitizer) during packet socket receive operations.
Statement
This is a theoretical data race detected by KCSAN that could result in reading a partially updated timestamp value. The practical impact is limited to potentially incorrect timestamp data being returned in control messages. There is no demonstrated crash or exploitable security vulnerability from this race condition.
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
Understanding the Weakness (CWE)
Integrity,Confidentiality,Other
Technical Impact: Modify Application Data; Read Application Data; Alter Execution Logic
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