CVE-2026-90123
kernel: irqchip/ast2700-intc: Avoid allocating in the irq_domain activate() callback
Severity
ModerateRed Hat Product Security
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 irqchip/ast2700-intc component. An invalid memory allocation attempt occurs within the irq_domain_activate() callback while interrupts are disabled and a spinlock is held. This condition, triggered by the fwnode_device_is_compatible() function, can lead to system instability or a kernel crash, resulting in a Denial of Service (DoS).
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 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-663 · Use of a Non-reentrant Function in a Concurrent Context