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CVE-2021-45464

Date: April 14, 2023

kvmtool through 39181fc allows an out-of-bounds write, related to virtio/balloon.c and virtio/pci.c. This allows a guest OS user to execute arbitrary code on the host machine.

Severity Score

8.8

Related Resources (8)

Url: https://cdn.discordapp.com/attachments/921419715170164776/921882173517230100/exploit.c

Url: https://people.canonical.com/~ubuntu-security/cve/CVE-2021-45464

Url: https://nvd.nist.gov/vuln/detail/CVE-2021-45464

Url: https://git.kernel.org/pub/scm/linux/kernel/git/will/kvmtool.git/log/

Url: https://git.kernel.org/pub/scm/linux/kernel/git/will/kvmtool.git/commit/?id=39181fc6429f4e9e71473284940e35857b42772a

Url: https://security-tracker.debian.org/tracker/CVE-2021-45464

Url: https://www.kalmarunionen.dk/writeups/2021/hxp-2021/lkvm/

Url: https://www.mend.io/vulnerability-database/CVE-2021-45464

Severity Score

8.8

Weakness Type (CWE)

Out-of-bounds Write

CWE-787

CVSS v3.1

Base Score:	8.8
Attack Vector (AV):	LOCAL
Attack Complexity (AC):	LOW
Privileges Required (PR):	LOW
User Interaction (UI):	NONE
Scope (S):	CHANGED
Confidentiality (C):	HIGH
Integrity (I):	HIGH
Availability (A):	HIGH

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