CVE-2026-43426
usb: renesas_usbhs: fix use-after-free in ISR during device removal
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
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.
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
3.0
References 8
git.kernel.org
- stable/c/c7012fc73dab4829404fedeeaa8531f12ac8545f
- stable/c/51afaf919bbaacdd9cc9e146033ae0a743a42dd7
- stable/c/1899edac312ef17a7234851686e8a703f56d0a84
- stable/c/9c6159d5b72d5fc265cce5da04f27d730b552e69
- stable/c/6287e0c01ccb818e7214f88d885ffb7c9e81b0e0
- stable/c/0b7d11fd6e742ecc0b1eca44b4f0b93140c74bae
- stable/c/6ffe44f022c95b1b29c691d2169c5abc046f7580
- stable/c/3cbc242b88c607f55da3d0d0d336b49bf1e20412