CVE-2024-50106
Description
A vulnerability was found in the Linux kernel. This issue occurs due to a race condition between the laundromat thread handling revoking delegations and the free_stateid operation, leading to a use-after-free issue. The error occurs when a freed stateid is accessed by another operation, which can cause memory corruption.
Statement
This vulnerability is classified as moderate severity. While this issue can lead to a use-after-free condition, its impact is limited to a specific race between two operations: the laundromat thread and free_stateid. The issue requires precise timing between these operations to be triggered, which reduces the likelihood of exploitation under normal conditions. Additionally, the vulnerability does not directly expose the system to remote code execution or privilege escalation but instead risks memory corruption or unexpected behavior in NFS delegation handling.
Mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
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 | 7 | 9.8 |
| Attack Vector | Local | Local | Network |
| Attack Complexity | High | High | Low |
| Privileges Required | Low | Low | None |
| User Interaction | None | None | None |
| Scope | Unchanged | Unchanged | Unchanged |
| Confidentiality | High | High | High |
| Integrity Impact | High | High | High |
| Availability Impact | High | High | High |
Vector
Red Hat: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
cve.org: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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