CVE-2021-4207

描述

A flaw was found in the QXL display device emulation in QEMU. A double fetch of guest controlled values `cursor->header.width` and `cursor->header.height` can lead to the allocation of a small cursor object followed by a subsequent heap-based buffer overflow. A malicious privileged guest user could use this flaw to crash the QEMU process on the host or potentially execute arbitrary code within the context of the QEMU process.

如何修補 CVE-2021-4207

要修補 CVE-2021-4207,請將受影響套件升級到下列已修補版本。

• —升級至 1:5.2+dfsg-11+deb11u2 或更新版本

CVE-2021-4207 正在被利用嗎?

低 — EPSS 為 0.4%,目前沒有觀察到大規模利用活動。

受影響套件(1)

• from 0, < 1:5.2+dfsg-11+deb11u2

CVSS 分數

參考連結(1)

• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2021-4207