CVE-2026-43426

usb: renesas_usbhs: fix use-after-free in ISR during device removal

State: Published
Severity: Not scored
Published: May 8, 2026
Updated: May 11, 2026
Reserved: May 1, 2026

Description

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

usb: renesas_usbhs: fix use-after-free in ISR during device removal

In usbhs_remove(), the driver frees resources (including the pipe array) while the interrupt handler (usbhs_interrupt) is still registered. If an interrupt fires after usbhs_pipe_remove() but before the driver is fully unbound, the ISR may access freed memory, causing a use-after-free.

Fix this by calling devm_free_irq() before freeing resources. This ensures the interrupt handler is both disabled and synchronized (waits for any running ISR to complete) before usbhs_pipe_remove() is called.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	f1407d5c66240b33d11a7f1a41d55ccf6a9d7647 to before c7012fc73dab4829404fedeeaa8531f12ac8545fAffected f1407d5c66240b33d11a7f1a41d55ccf6a9d7647 to before 51afaf919bbaacdd9cc9e146033ae0a743a42dd7Affected f1407d5c66240b33d11a7f1a41d55ccf6a9d7647 to before 1899edac312ef17a7234851686e8a703f56d0a84Affected f1407d5c66240b33d11a7f1a41d55ccf6a9d7647 to before 9c6159d5b72d5fc265cce5da04f27d730b552e69Affected f1407d5c66240b33d11a7f1a41d55ccf6a9d7647 to before 6287e0c01ccb818e7214f88d885ffb7c9e81b0e0Affected f1407d5c66240b33d11a7f1a41d55ccf6a9d7647 to before 0b7d11fd6e742ecc0b1eca44b4f0b93140c74baeAffected f1407d5c66240b33d11a7f1a41d55ccf6a9d7647 to before 6ffe44f022c95b1b29c691d2169c5abc046f7580Affected f1407d5c66240b33d11a7f1a41d55ccf6a9d7647 to before 3cbc242b88c607f55da3d0d0d336b49bf1e20412Affected
LinuxLinux	3.0Affected before 3.0Not affected 5.10.253 through 5.10.Not affected 5.15.203 through 5.15.Not affected 6.1.167 through 6.1.Not affected 6.6.130 through 6.6.Not affected 6.12.78 through 6.12.Not affected 6.18.19 through 6.18.Not affected 6.19.9 through 6.19.*Not affected 7.0 and laterNot affected

Product

Versions

LinuxLinux

f1407d5c66240b33d11a7f1a41d55ccf6a9d7647 to before c7012fc73dab4829404fedeeaa8531f12ac8545fAffected
f1407d5c66240b33d11a7f1a41d55ccf6a9d7647 to before 51afaf919bbaacdd9cc9e146033ae0a743a42dd7Affected
f1407d5c66240b33d11a7f1a41d55ccf6a9d7647 to before 1899edac312ef17a7234851686e8a703f56d0a84Affected
f1407d5c66240b33d11a7f1a41d55ccf6a9d7647 to before 9c6159d5b72d5fc265cce5da04f27d730b552e69Affected
f1407d5c66240b33d11a7f1a41d55ccf6a9d7647 to before 6287e0c01ccb818e7214f88d885ffb7c9e81b0e0Affected
f1407d5c66240b33d11a7f1a41d55ccf6a9d7647 to before 0b7d11fd6e742ecc0b1eca44b4f0b93140c74baeAffected
f1407d5c66240b33d11a7f1a41d55ccf6a9d7647 to before 6ffe44f022c95b1b29c691d2169c5abc046f7580Affected
f1407d5c66240b33d11a7f1a41d55ccf6a9d7647 to before 3cbc242b88c607f55da3d0d0d336b49bf1e20412Affected

LinuxLinux

3.0Affected
before 3.0Not affected
5.10.253 through 5.10.*Not affected
5.15.203 through 5.15.*Not affected
6.1.167 through 6.1.*Not affected
6.6.130 through 6.6.*Not affected
6.12.78 through 6.12.*Not affected
6.18.19 through 6.18.*Not affected
6.19.9 through 6.19.*Not affected
7.0 and laterNot affected

References

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