CVE-2026-43426: Linux kernel · usb: renesas_usbhs: fix use-after-free in ISR during device removal
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 11 Nov 2026, 23:24 UTC
Rated by Threat Radar · No CVSS score from NVD or the CNA
Thin evidence
One scorer or none- EPSS
- 0.1% chance of exploitation in 30 days – higher than 2% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Exploitation evidence
Disclosed: evidence found.
CVE published 8 May 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 11 Nov 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.
References
- git.kernel.org/stable/c/c7012fc73dab4829404fedeeaa8531f12ac8545f (opens in a new tab)
- git.kernel.org/stable/c/51afaf919bbaacdd9cc9e146033ae0a743a42dd7 (opens in a new tab)
- git.kernel.org/stable/c/1899edac312ef17a7234851686e8a703f56d0a84 (opens in a new tab)
- git.kernel.org/stable/c/9c6159d5b72d5fc265cce5da04f27d730b552e69 (opens in a new tab)
- git.kernel.org/stable/c/6287e0c01ccb818e7214f88d885ffb7c9e81b0e0 (opens in a new tab)
- git.kernel.org/stable/c/0b7d11fd6e742ecc0b1eca44b4f0b93140c74bae (opens in a new tab)
- git.kernel.org/stable/c/6ffe44f022c95b1b29c691d2169c5abc046f7580 (opens in a new tab)
- git.kernel.org/stable/c/3cbc242b88c607f55da3d0d0d336b49bf1e20412 (opens in a new tab)