CVE-2026-90120

kernel: irqchip/gic-v5: Check get_logical_index() return value in MADT IAFFID parsing

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Severity

Moderate

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · September 17, 2026

Updated · October 13, 2026

Description

A flaw was found in the Linux kernel's GIC-v5 interrupt controller component. The gic_acpi_parse_iaffid() function does not properly validate the return value from get_logical_index(). This can lead to out-of-bounds memory corruption when processing Advanced Configuration and Power Interface (ACPI) data, potentially affecting system stability and integrity.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE-787 · Out-of-bounds Write