CVE-2025-38172
Description
A flaw was found in the Linux kernel's erofs filesystem. A local attacker could exploit a use-after-free (UAF) vulnerability by mounting an erofs filesystem with a specific configuration where the primary and extra devices have mismatched types. This improper handling of device initialization errors could lead to a system crash (denial of service) or potentially allow a local attacker to execute arbitrary code, thereby gaining full control over the affected system.
Statement
This vulnerability is rated as Moderate impact for Red Hat Enterprise Linux because exploitation requires local privileges to mount filesystems or access to unprivileged user namespaces. Standard enterprise deployments rarely utilize EROFS, limiting exposure to environments permitting untrusted filesystem mounts. Red Hat Enterprise Linux 8 and 9 do not contain the affected device handling logic and are not vulnerable.
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).
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 7.3 | 7.8 | 7.8 |
| Attack Vector | Local | Local | Local |
| Attack Complexity | Low | Low | Low |
| Privileges Required | Low | Low | None |
| User Interaction | None | None | Required |
| Scope | Unchanged | Unchanged | Unchanged |
| Confidentiality | High | High | High |
| Integrity Impact | Low | High | High |
| Availability Impact | High | High | High |
Vector
Red Hat: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H
NVD: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
cve.org: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
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