CVE-2021-4158

Advisory lineage Upstream: 0 Downstream: 6
Modified
Published: 24 Aug 2022, 15:10
Last modified:03 Aug 2024, 17:16

Vulnerability Summary

Overall Risk (default)
medium
34/100
CVSS Score
6 MEDIUM
v3.1 (nvd)
EPSS Score
0.02% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected

Timeline

24 Aug 2022, 15:10
Published
Vulnerability first disclosed
03 Aug 2024, 17:16
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•MEDIUM•Score: 6CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.02%• Percentile: 7%

Techniques & Countermeasures

  • CWE-476•NULL Pointer Dereference

    The product dereferences a pointer that it expects to be valid but is NULL.

Affected Systems

  • qemu•qemu

    ≥ 6.0.0, < 7.0.0

  • redhat•enterprise_linux

    9.0

References (5)