CVE-2024-56682

irqchip/riscv-aplic: Prevent crash when MSI domain is missing

State: Published
Severity: 5.5 Medium
Published: Dec 28, 2024
Updated: May 11, 2026
Reserved: Dec 27, 2024

Description

In the Linux kernel, the following vulnerability has been resolved:

irqchip/riscv-aplic: Prevent crash when MSI domain is missing

If the APLIC driver is probed before the IMSIC driver, the parent MSI domain will be missing, which causes a NULL pointer dereference in msi_create_device_irq_domain().

Avoid this by deferring probe until the parent MSI domain is available. Use dev_err_probe() to avoid printing an error message when returning -EPROBE_DEFER.

Scores

CVSS	Score	Vector	Source
3.1	5.5 Medium	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	CISA-ADP

Weaknesses

CWE-476 NULL Pointer Dereference

Affected Products

Product	Versions
LinuxLinux	ca8df97fe6798afbe395fc4a8e23bac0c7fbd248 to before 285a07810ab3bcedc2bd380ebacbf6b4942a889aAffected ca8df97fe6798afbe395fc4a8e23bac0c7fbd248 to before 1f181d1cda56c2fbe379c5ace1aa1fac6306669eAffected
LinuxLinux	6.10Affected before 6.10Not affected 6.12.2 through 6.12.*Not affected 6.13 and laterNot affected

References

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