CVE-2023-2861 Affecting kvmtool package, versions <0.20170904-1ubuntu0.20.04.1~esm1


Severity

Recommended
low

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.38% (30th percentile)

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  • Snyk IDSNYK-UBUNTU2004-KVMTOOL-16061887
  • published15 Apr 2026
  • disclosed6 Dec 2023

Introduced: 6 Dec 2023

CVE-2023-2861  (opens in a new tab)

How to fix?

Upgrade Ubuntu:20.04 kvmtool to version 0.20170904-1ubuntu0.20.04.1~esm1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kvmtool package and not the kvmtool package as distributed by Ubuntu. See How to fix? for Ubuntu:20.04 relevant fixed versions and status.

A flaw was found in the 9p passthrough filesystem (9pfs) implementation in QEMU. The 9pfs server did not prohibit opening special files on the host side, potentially allowing a malicious client to escape from the exported 9p tree by creating and opening a device file in the shared folder.

CVSS Base Scores

version 3.1