CVE-2021-43056

Advisory lineage Upstream: 0 Downstream: 22
Modified
Published: 28 Oct 2021, 03:13
Last modified:04 Aug 2024, 03:47

Vulnerability Summary

Overall Risk (default)
low
22/100
CVSS Score
5.5 MEDIUM
v3.1 (nvd)
EPSS Score
0.02% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

28 Oct 2021, 03:13
Published
Vulnerability first disclosed
04 Aug 2024, 03:47
Last Modified
Vulnerability information updated

Description

An issue was discovered in the Linux kernel for powerpc before 5.14.15. It allows a malicious KVM guest to crash the host, when the host is running on Power8, due to an arch/powerpc/kvm/book3s_hv_rmhandlers.S implementation bug in the handling of the SRR1 register values.

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  • v2.0•MEDIUM•Score: 4.9AV:L/AC:L/Au:N/C:N/I:N/A:C

EPSS Trends

Current EPSS score: 0.02%• Percentile: 7%

Affected Systems

  • fedoraproject•fedora

    33 | 34 | 35

  • linux•linux_kernel

    ≥ 5.2, < 5.4.15

References (7)