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Gentoo Linux: CVE-2021-3748: QEMU: Multiple Vulnerabilities

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Gentoo Linux: CVE-2021-3748: QEMU: Multiple Vulnerabilities

Severity
7
CVSS
(AV:L/AC:L/Au:N/C:C/I:C/A:C)
Published
03/23/2022
Created
08/29/2022
Added
08/16/2022
Modified
08/16/2022

Description

A use-after-free vulnerability was found in the virtio-net device of QEMU. It could occur when the descriptor's address belongs to the non direct access region, due to num_buffers being set after the virtqueue elem has been unmapped. A malicious guest could use this flaw to crash QEMU, resulting in a denial of service condition, or potentially execute code on the host with the privileges of the QEMU process.

Solution(s)

  • gentoo-linux-upgrade-app-emulation-qemu

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