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VULNERABILITIES

CVE-2021-4158 Details

Description

A NULL pointer dereference issue was found in the ACPI code of QEMU. A malicious, privileged user within the guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:6 MEDIUMVector:CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://access.redhat.com/security/cve/CVE-2021-4158 CVEThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2035002 CVEIssue TrackingPatchThird Party Advisory
https://gitlab.com/qemu-project/qemu/-/commit/9bd6565ccee68f72d5012e24646e12a1c662827e CVEPatchThird Party Advisory
https://gitlab.com/qemu-project/qemu/-/issues/770 CVEExploitThird Party Advisory
https://www.mail-archive.com/qemu-devel%40nongnu.org/msg857944.html CVEPatchThird Party Advisory

see all 10 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-476NULL Pointer Dereference[email protected]
CWE-476NULL Pointer Dereference[email protected]

Affected Products

ProductVersions
qemu qemu
>= 6.0.0, < 7.0.0

CPE

  • cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.
redhat enterprise linux
9.0

CPE

  • cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

8 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2021-4158
NVD Published Date:
Aug 24, 2022
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2021-4158 Details - Not Deferred