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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 se...
CVE-2021-20196
SecPulse初出
ディストリビューション別の修正状況
各ディストリビューションが公開している、この CVE の修正パッケージ
- Debian DEBIAN-CVE-2021-20196 qemu 修正版: 1:6.2+dfsg-1
- Ubuntu UBUNTU-CVE-2021-20196 qemu 修正版: 2.0.0+dfsg-2ubuntu1.47+esm6
原文の説明 取得元が公開している説明をそのまま載せています (多くは英語)。
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.
参照URL
- advisory lists.debian.org
- advisory lists.debian.org
- advisory security.netapp.com
- patch bugs.launchpad.net
- patch openwall.com