CVE-2020-25741

QEMU: fdc: null pointer dereference during r/w data transfer

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Severity

Low

Red Hat Product Security

3.2

CVSS 3.1

Review impact separately from score.

Published · June 24, 2020

Updated · June 28, 2026

Description

A NULL pointer dereference flaw was found in the Floppy disk emulator of QEMU. This issue occurs while transferring data via the fdctrl_read_data() and fdctrl_write_data() routines if the current drive has a null block pointer. This flaw allows a guest user to crash the QEMU process on the host, resulting in a denial of service.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 3.2
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:L

CWE-476 · NULL Pointer Dereference