High 7.8Published May 8, 2026

CVE-2026-43426usb: renesas_usbhs: fix use-after-free in ISR during device removal

Updated under an hour ago (Oct 27, 2026, 8:20 PM ET)

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Exploited in the last 30 days

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.

CVSS: 7.8 HIGH (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Analyzed
Record last updated: May 11, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from f1407d5c66240b33d11a7f1a41d55ccf6a9d7647 before c7012fc73dab4829404fedeeaa8531f12ac8545f; from f1407d5c66240b33d11a7f1a41d55ccf6a9d7647 before 51afaf919bbaacdd9cc9e146033ae0a743a42dd7; from f1407d5c66240b33d11a7f1a41d55ccf6a9d7647 before 1899edac312ef17a7234851686e8a703f56d0a84; from f1407d5c66240b33d11a7f1a41d55ccf6a9d7647 before 9c6159d5b72d5fc265cce5da04f27d730b552e69; from f1407d5c66240b33d11a7f1a41d55ccf6a9d7647 before 6287e0c01ccb818e7214f88d885ffb7c9e81b0e0; from f1407d5c66240b33d11a7f1a41d55ccf6a9d7647 before 0b7d11fd6e742ecc0b1eca44b4f0b93140c74bae; from f1407d5c66240b33d11a7f1a41d55ccf6a9d7647 before 6ffe44f022c95b1b29c691d2169c5abc046f7580; from f1407d5c66240b33d11a7f1a41d55ccf6a9d7647 before 3cbc242b88c607f55da3d0d0d336b49bf1e20412	CNA record
linux linux_kernel linux:linux_kernel	from 3.0 before 5.10.253; from 5.11 before 5.15.203; from 5.16 before 6.1.167; from 6.2 before 6.6.130; from 6.7 before 6.12.78; from 6.13 before 6.18.19; from 6.19 before 6.19.9; 7.0; and 3 more ranges	NVD

References

References

https://git.kernel.org/stable/c/c7012fc73dab4829404fedeeaa8531f12ac8545f	patch
https://git.kernel.org/stable/c/51afaf919bbaacdd9cc9e146033ae0a743a42dd7	patch
https://git.kernel.org/stable/c/1899edac312ef17a7234851686e8a703f56d0a84	patch
https://git.kernel.org/stable/c/9c6159d5b72d5fc265cce5da04f27d730b552e69	patch
https://git.kernel.org/stable/c/6287e0c01ccb818e7214f88d885ffb7c9e81b0e0	patch
https://git.kernel.org/stable/c/0b7d11fd6e742ecc0b1eca44b4f0b93140c74bae	patch
https://git.kernel.org/stable/c/6ffe44f022c95b1b29c691d2169c5abc046f7580	patch
https://git.kernel.org/stable/c/3cbc242b88c607f55da3d0d0d336b49bf1e20412	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.