CVE-2021-20196
- State
- Published
- Severity
- Not scored
- Published
- May 26, 2021
- Updated
- Aug 3, 2024
- Reserved
- Dec 17, 2020
Description
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.
Scores
The record has no CVSS score.
Weaknesses
Affected Products
| Product | Versions |
|---|---|
qemun/a |
|
References
- https://bugs.launchpad.net/qemu/+bug/1912780
- https://www.openwall.com/lists/oss-security/2021/01/28/1
- https://security.netapp.com/advisory/ntap-20210708-0004/
- [debian-lts-announce] 20220404 [SECURITY] [DLA 2970-1] qemu security updatemailing-list
- [debian-lts-announce] 20220905 [SECURITY] [DLA 3099-1] qemu security updatemailing-list
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