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CVE-2026-72153

UnknownEPSS 0.21%

Last modified

CVE-2026-72153 is a vulnerability of currently unknown severity. In the Linux kernel, the following vulnerability has been resolved: irqchip/crossbar: Use correct index in crossbar_domain_free() crossbar_domain_free() resets the domain data and then uses the nulled out irq_data->hwirq member as index to reset the irq_map[] entry and to write the relevant crossbar register with a safe entry. That means it never frees the correct index and keeps the crossbar register connection to the source interrupt active. If it would not reset the domain data, then this would be even worse as irq_data->hwirq holds the source interrupt number, but both the map and register index need the corresponding GIC SPI number and not the source interrupt number. EPSS estimates a 0.21% chance of exploitation in the next 30 days.

Description

In the Linux kernel, the following vulnerability has been resolved: irqchip/crossbar: Use correct index in crossbar_domain_free() crossbar_domain_free() resets the domain data and then uses the nulled out irq_data->hwirq member as index to reset the irq_map[] entry and to write the relevant crossbar register with a safe entry. That means it never frees the correct index and keeps the crossbar register connection to the source interrupt active. If it would not reset the domain data, then this would be even worse as irq_data->hwirq holds the source interrupt number, but both the map and register index need the corresponding GIC SPI number and not the source interrupt number. This might even result in an out of bounds access as the source interrupt number can be higher than the maximal index space. Fix this by using the GIC SPI index from the parent domain's irq_data.

Metrics

EPSS Probability
0.21%

11.6th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 783d31863fb826f1a3754a2d5959a022a1b12d54, < 13bdb5140405ff283f9052e65ee1d5c2303765c7; >= 783d31863fb826f1a3754a2d5959a022a1b12d54, < 1c48dc6a0c1ef47a9fa24611e60bc2f4ee4dd0df; >= 783d31863fb826f1a3754a2d5959a022a1b12d54, < ccc3664679763d2d6f067c28729bdff627bb72d0; >= 783d31863fb826f1a3754a2d5959a022a1b12d54, < 424130169dc03b84ea604685409726d61bcec859; >= 783d31863fb826f1a3754a2d5959a022a1b12d54, < cca649a23a5fc8aae536fc27a0546c67690a4078; >= 783d31863fb826f1a3754a2d5959a022a1b12d54, < 36ca587f55a2c04468a89fd16174bb2f78dc04ec; >= 783d31863fb826f1a3754a2d5959a022a1b12d54, < e5be5d452d5f1efbb3342da2b00029be6c99034e; >= 783d31863fb826f1a3754a2d5959a022a1b12d54, < 043db005a8d6932dc7d217c86307e9af0bc10ddc
LinuxLinux4.1

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-72153?
In the Linux kernel, the following vulnerability has been resolved: irqchip/crossbar: Use correct index in crossbar_domain_free() crossbar_domain_free() resets the domain data and then uses the nulled out irq_data->hwirq member as index to reset the irq_map[] entry and to write the relevant crossbar register with a safe entry. That means it never frees the correct index and keeps the crossbar register connection to the source interrupt active. If it would not reset the domain data, then this would be even worse as irq_data->hwirq holds the source interrupt number, but both the map and register index need the corresponding GIC SPI number and not the source interrupt number. This might even result in an out of bounds access as the source interrupt number can be higher than the maximal index space. Fix this by using the GIC SPI index from the parent domain's irq_data.
How severe is CVE-2026-72153?
Severity scoring for CVE-2026-72153 is pending analysis. The EPSS model estimates a 0.21% probability of exploitation in the next 30 days.
How do I fix CVE-2026-72153?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST