CVE-2024-38385
Description
A flaw was found in the Linux kernel. A race condition in the interrupt descriptor subsystem allows an interrupt descriptor to be accessed without proper locking, leading to a use-after-free condition where memory is referenced after being released. A local user could exploit this flaw by querying system interrupt statistics, potentially triggering a system crash and causing a Denial of Service (DoS).
Statement
This vulnerability is assessed as Low impact because exploitation is confined to a local denial of service, requiring precise timing to trigger a race condition during dynamic interrupt deallocation and concurrent statistics queries. The flaw cannot be leveraged for arbitrary privilege escalation or unauthorized data disclosure, as it only results in a kernel crash. Additionally, typical enterprise platforms do not ship the upstream interrupt subsystem refactoring that introduced this flaw.
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 | 5.5 | 7.8 |
| Attack Vector | Local | Local | Local |
| Attack Complexity | Low | Low | Low |
| Privileges Required | Low | Low | Low |
| User Interaction | None | None | None |
| Scope | Unchanged | Unchanged | Unchanged |
| Confidentiality | None | None | High |
| Integrity Impact | None | None | High |
| Availability Impact | High | High | High |
Vector
Red Hat: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD: 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
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