CVE-2025-21917
usb: renesas_usbhs: Flush the notify_hotplug_work
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Description
In the Linux kernel, the following vulnerability has been resolved: usb: renesas_usbhs: Flush the notify_hotplug_work When performing continuous unbind/bind operations on the USB drivers available on the Renesas RZ/G2L SoC, a kernel crash with the message "Unable to handle kernel NULL pointer dereference at virtual address" may occur. This issue points to the usbhsc_notify_hotplug() function. Flush the delayed work to avoid its execution when driver resources are unavailable.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- https://git.kernel.org/stable/c/3248c1f833f924246cb98ce7da4569133c1b2292
- https://git.kernel.org/stable/c/394965f90454d6f00fe11879142b720c6c1a872e
- https://git.kernel.org/stable/c/4ca078084cdd5f32d533311d6a0b63a60dcadd41
- https://git.kernel.org/stable/c/4cd847a7b630a85493d0294ad9542c21aafaa246
- https://git.kernel.org/stable/c/552ca6b87e3778f3dd5b87842f95138162e16c82
References (10)
SSVC — Action Prioritization
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
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