CVE-2026-72015
Description
A flaw was found in the Linux kernel's fs/resctrl component. A double-free vulnerability occurs when a pseudo-locked group's Resource Monitoring ID (RMID) is freed upon creation and then again during unmount operations by the rmdir_all_sub() function. This double-free can lead to memory corruption, potentially causing system instability or unexpected behavior.
Statement
This vulnerability is rated as having Moderate impact on Red Hat Enterprise Linux because exploitation requires local access and relies on hardware-specific resource management features that are neither mounted nor configured by default. Triggering the flaw demands specialized hardware supporting cache allocation technologies and privileged interaction to create and teardown pseudo-locked resource control domains. Consequently, typical enterprise deployments that do not utilize cache pseudo-locking are not exposed to this issue during normal operation.
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 | 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 | High | 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:H
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