This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page.
View CVE-2021-3507 →
DEBIAN-CVE-2021-3507
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/...
Original description
The description as published by the source.
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.
Source: OSV.dev (Open Source Vulnerabilities) OSV
Affected packages
Debian:12
qemu
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:7.1+dfsg-1"}]}]
Debian:13
qemu
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:7.1+dfsg-1"}]}]
Debian:14
qemu
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:7.1+dfsg-1"}]}]
References
- advisory security-tracker.debian.org