CVE Catalog

CVE-2026-72384

Low risk· EPSS 11%
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.21%

11th percentile - higher than 11% of all known CVEs

Summary

In the Linux kernel's irqchip/ts4800 driver, a missing chained handler cleanup on remove was found. After driver removal, a dangling handler remains that may be called when the parent interrupt fires, potentially accessing freed memory and causing a kernel crash.

Risk Assessment

This could lead to a kernel crash after driver removal, threatening system stability.

Recommendation

Install an updated Linux kernel with the fix that saves parent_irq, clears the chained handler, and disposes IRQ mappings before domain removal.

Other vulnerabilities in Linux kernel

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Original NVD description (English source)

In the Linux kernel, the following vulnerability has been resolved: irqchip/ts4800: Fix missing chained handler cleanup on remove The driver installs a chained handler for the parent interrupt during probe using irq_set_chained_handler_and_data(), but the remove function does not clear this handler. This leaves a dangling handler that may be called when the parent interrupt fires after the driver has been removed, potentially accessing freed memory and causing a kernel crash. Additionally, the parent_irq obtained via irq_of_parse_and_map() is not stored, making it inaccessible in the remove function. Moreover, interrupt mappings created during probe are not properly disposed. Fix this by: - Saving parent_irq in probe - Clearing the chained handler with NULL in ts4800_ic_remove() - Disposing all IRQ mappings before domain removal to prevent resource leaks

Vulnerability data from NVD (NIST) · CISA KEV · EPSS