CVE-2026-72153

irqchip/crossbar: Use correct index in crossbar_domain_free()

State: Published
Severity: Not scored
Published: Aug 15, 2026
Updated: Aug 17, 2026
Reserved: Aug 9, 2026

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	783d31863fb826f1a3754a2d5959a022a1b12d54 to before 13bdb5140405ff283f9052e65ee1d5c2303765c7Affected 783d31863fb826f1a3754a2d5959a022a1b12d54 to before 1c48dc6a0c1ef47a9fa24611e60bc2f4ee4dd0dfAffected 783d31863fb826f1a3754a2d5959a022a1b12d54 to before ccc3664679763d2d6f067c28729bdff627bb72d0Affected 783d31863fb826f1a3754a2d5959a022a1b12d54 to before 424130169dc03b84ea604685409726d61bcec859Affected 783d31863fb826f1a3754a2d5959a022a1b12d54 to before cca649a23a5fc8aae536fc27a0546c67690a4078Affected 783d31863fb826f1a3754a2d5959a022a1b12d54 to before 36ca587f55a2c04468a89fd16174bb2f78dc04ecAffected 783d31863fb826f1a3754a2d5959a022a1b12d54 to before e5be5d452d5f1efbb3342da2b00029be6c99034eAffected 783d31863fb826f1a3754a2d5959a022a1b12d54 to before 043db005a8d6932dc7d217c86307e9af0bc10ddcAffected
LinuxLinux	4.1Affected before 4.1Not affected 5.10.261 through 5.10.Not affected 5.15.212 through 5.15.Not affected 6.1.178 through 6.1.Not affected 6.6.145 through 6.6.Not affected 6.12.97 through 6.12.Not affected 6.18.40 through 6.18.Not affected 7.1.5 through 7.1.*Not affected 7.2 and laterNot affected

Product

Versions

LinuxLinux

783d31863fb826f1a3754a2d5959a022a1b12d54 to before 13bdb5140405ff283f9052e65ee1d5c2303765c7Affected
783d31863fb826f1a3754a2d5959a022a1b12d54 to before 1c48dc6a0c1ef47a9fa24611e60bc2f4ee4dd0dfAffected
783d31863fb826f1a3754a2d5959a022a1b12d54 to before ccc3664679763d2d6f067c28729bdff627bb72d0Affected
783d31863fb826f1a3754a2d5959a022a1b12d54 to before 424130169dc03b84ea604685409726d61bcec859Affected
783d31863fb826f1a3754a2d5959a022a1b12d54 to before cca649a23a5fc8aae536fc27a0546c67690a4078Affected
783d31863fb826f1a3754a2d5959a022a1b12d54 to before 36ca587f55a2c04468a89fd16174bb2f78dc04ecAffected
783d31863fb826f1a3754a2d5959a022a1b12d54 to before e5be5d452d5f1efbb3342da2b00029be6c99034eAffected
783d31863fb826f1a3754a2d5959a022a1b12d54 to before 043db005a8d6932dc7d217c86307e9af0bc10ddcAffected

LinuxLinux

4.1Affected
before 4.1Not affected
5.10.261 through 5.10.*Not affected
5.15.212 through 5.15.*Not affected
6.1.178 through 6.1.*Not affected
6.6.145 through 6.6.*Not affected
6.12.97 through 6.12.*Not affected
6.18.40 through 6.18.*Not affected
7.1.5 through 7.1.*Not affected
7.2 and laterNot affected

References

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