A heap buffer overflow was found in the floppy disk emulator of QEMU up to 6.0.0 (including). It could occur in fdctrl_transfer_handler() in hw/block/fdc.c while processing DMA read data transfers from the floppy drive to the guest system. A privileged guest user could use this flaw to crash the QEMU process on the host resulting in DoS scenario, or potential information leakage from the host memory.
https://bugzilla.redhat.com/show_bug.cgi?id=1951118
https://security.netapp.com/advisory/ntap-20210528-0005/
https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html
Source: MITRE
Published: 2021-05-06
Updated: 2023-02-12
Type: CWE-119
Base Score: 3.6
Vector: AV:L/AC:L/Au:N/C:P/I:N/A:P
Impact Score: 4.9
Exploitability Score: 3.9
Severity: LOW
Base Score: 6.1
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L
Impact Score: 4.2
Exploitability Score: 1.8
Severity: MEDIUM