High severity7.8NVD Advisory· Published May 8, 2026· Updated May 20, 2026
CVE-2026-43426
CVE-2026-43426
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.
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Affected products
6cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*+ 4 more
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*range: >=3.0,<5.10.253
- cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*
Patches
Vulnerability mechanics
References
8- git.kernel.org/stable/c/0b7d11fd6e742ecc0b1eca44b4f0b93140c74baenvdPatch
- git.kernel.org/stable/c/1899edac312ef17a7234851686e8a703f56d0a84nvdPatch
- git.kernel.org/stable/c/3cbc242b88c607f55da3d0d0d336b49bf1e20412nvdPatch
- git.kernel.org/stable/c/51afaf919bbaacdd9cc9e146033ae0a743a42dd7nvdPatch
- git.kernel.org/stable/c/6287e0c01ccb818e7214f88d885ffb7c9e81b0e0nvdPatch
- git.kernel.org/stable/c/6ffe44f022c95b1b29c691d2169c5abc046f7580nvdPatch
- git.kernel.org/stable/c/9c6159d5b72d5fc265cce5da04f27d730b552e69nvdPatch
- git.kernel.org/stable/c/c7012fc73dab4829404fedeeaa8531f12ac8545fnvdPatch
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