CVE-2026-43340
Description
A flaw was found in the comedi subsystem of the Linux kernel. This vulnerability arises when a comedi_device is reattached to different low-level drivers using the COMEDI_DEVCONFIG ioctl command. A local user with appropriate privileges could exploit this by repeatedly attaching the device, leading to inconsistent spin-lock states. This inconsistency may cause system instability or unexpected behavior within the kernel.
Understanding the Weakness (CWE)
Confidentiality
Technical Impact: Read Memory; Read Application Data
When reusing a resource such as memory or a program variable, the original contents of that resource may not be cleared before it is sent to an untrusted party.
Availability
Technical Impact: DoS: Crash, Exit, or Restart
The uninitialized resource may contain values that cause program flow to change in ways that the programmer did not intend.
Frequently Asked Questions
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