Linux Kernel drivers/block/floppy.c Denial of Service Vulnerability [CVE-2019-14284]

CVE number – CVE-2019-14284

A vulnerability in the Linux Kernel could allow a local attacker to cause a denial of service (DoS) condition on a targeted system. The vulnerability is due to a divide-by-zero condition in the drivers/block/floppy.c source code file of the affected software.

An attacker could exploit this vulnerability by inserting a floppy disk that submits malicious input to the targeted system. A successful exploit could cause the targeted system to crash, resulting in a DoS condition.

Kernel.org has confirmed the vulnerability and released software updates.

Analysis

  • To exploit this vulnerability, the attacker must have user-level access and be able to insert a floppy disk into the targeted system. This access requirement may reduce the likelihood of a successful exploit.

Safeguards for Administrators

  • Apply the appropriate updates.

    Allow only trusted users to access local systems.

    Allow only privileged users to access administration or management systems.

    Monitor critical systems.

Vendor Announcements

Fixed Software

Jason Davies

UK based technology professional, with an interest in computer security and telecoms.

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