PT-2023-12558 · Kvmtool · Kvmtool

N00Byedge + 2 · Published 2023-04-15 · Updated 2026-04-13 · CVE-2021-45464

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions kvmtool versions through 39181fc

Description The issue allows a guest OS user to execute arbitrary code on the host machine due to an out-of-bounds write related to virtio/balloon.c and virtio/pci.c.

Recommendations For versions through 39181fc, at the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2021-45464

USN-8172-1

Affected Products

Kvmtool

References · 12

• 🔥 https://kalmarunionen.dk/writeups/2021/hxp-2021/lkvm · Exploit
• https://ubuntu.com/security/CVE-2021-45464 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-45464 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-45464 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-8172-1 · Vendor Advisory
• https://git.kernel.org/pub/scm/linux/kernel/git/will/kvmtool.git/log · Patch
• https://osv.dev/vulnerability/USN-8172-1 · Vendor Advisory
• https://git.kernel.org/pub/scm/linux/kernel/git/will/kvmtool.git/commit/?id=39181fc6429f4e9e71473284940e35857b42772a · Patch
• https://cve.org/CVERecord?id=CVE-2021-45464 · Security Note
• https://ubuntu.com/security/CVE-2023-2861 · Vendor Advisory
• https://t.me/cvenotify/48348 · Telegram Post
• https://cdn.discordapp.com/attachments/921419715170164776/921882173517230100/exploit.c · Note