CVE-2021-20196CWE-476

A NULL pointer dereference flaw was found in the floppy disk emulator of QEMU

published May 26, 2021

CVSS
—
EPSS
0%
Percentile
40.4
In the wild
Unconfirmed
What it is

A NULL pointer dereference flaw was found in the floppy disk emulator of QEMU. This issue occurs while processing read/write ioport commands if the selected floppy drive is not initialized with a block device. This flaw allows a privileged guest user to crash the QEMU process on the host, resulting in a denial of service. The highest threat from this vulnerability is to system availability.

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.00479 · 40.4th percentile
Weakness
CWE-476 · NULL Pointer Dereference
Published
2021-05-26T21:16Z
EPSS history
Timeline
  • 26 MAY 21:16Z
    A NULL pointer dereference flaw was found in the floppy disk emulator of QEMU
    cvelistv5