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CVE-2021-20196 A NULL pointer dereference flaw was found in the floppy disk emulator of QEMU
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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| QEMU | Versions not published |
References
- bugs.launchpad.net bugs.launchpad.net
- www.openwall.com www.openwall.com
- security.netapp.com security.netapp.com
- [debian-lts-announce] 20220404 [SECURITY] [DLA 2970-1] qemu security update lists.debian.org
- [debian-lts-announce] 20220905 [SECURITY] [DLA 3099-1] qemu security update lists.debian.org
Timeline
- Published
- Last modified
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