CVE-2026-72487
Description
A flaw was found in the Linux kernel's handling of PCI (Peripheral Component Interconnect) ROM (Read-Only Memory) space. A local attacker could trigger an out-of-bounds read or an alignment fault by providing a malformed ROM image or an unaligned data structure address. This could lead to a system crash, resulting in a Denial of Service (DoS).
Statement
This vulnerability is rated as Moderate severity because it is restricted to local execution and results exclusively in a kernel crash, without impacting system integrity or data confidentiality. Exploitation requires reading PCI expansion ROMs—typically through sysfs interfaces accessible only by privileged users—on systems where attached physical or virtual PCI devices present malformed ROM data. Consequently, standard Red Hat Enterprise Linux deployments running verified hardware configurations face minimal exposure.
Mitigation
Mitigation for this issue is either not available or the currently available options don't 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).
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 | 7.7 |
| Attack Vector | Local | N/A | Local |
| Attack Complexity | Low | N/A | Low |
| Privileges Required | Low | N/A | None |
| User Interaction | None | N/A | None |
| Scope | Unchanged | N/A | Unchanged |
| Confidentiality | None | N/A | High |
| Integrity Impact | None | N/A | None |
| Availability Impact | High | N/A | High |
Vector
Red Hat: 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:N/UI:N/S:U/C:H/I:N/A:H
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