CVE-2022-2153

Advisory lineage Upstream: 0 Downstream: 30
Modified
Published: 31 Aug 2022, 00:00
Last modified:03 Aug 2024, 00:32

Vulnerability Summary

Overall Risk (default)
medium
32/100
CVSS Score
5.5 MEDIUM
v3.1 (nvd)
EPSS Score
0.03% LOW
0% probability +0.01%
KEV
Not listed
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected

Timeline

31 Aug 2022, 00:00
Published
Vulnerability first disclosed
03 Aug 2024, 00:32
Last Modified
Vulnerability information updated

Description

A flaw was found in the Linux kernel’s KVM when attempting to set a SynIC IRQ. This issue makes it possible for a misbehaving VMM to write to SYNIC/STIMER MSRs, causing a NULL pointer dereference. This flaw allows an unprivileged local attacker on the host to issue specific ioctl calls, causing a kernel oops condition that results in a denial of service.

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

EPSS Trends

Current EPSS score: 0.03%• Percentile: 8%

Techniques & Countermeasures

  • CWE-476•NULL Pointer Dereference

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

Affected Systems

  • debian•debian_linux

    10.0

  • fedoraproject•fedora

    36

  • linux•linux_kernel

    < 5.18

  • redhat•enterprise_linux

    6.0 | 7.0 | 8.0 | 9.0

References (7)