CVE-2021-3923

Advisory lineage Upstream: 0 Downstream: 12
Modified
Published: 27 Mar 2023, 00:00
Last modified:24 Feb 2025, 19:19

Vulnerability Summary

Overall Risk (default)
minimal
9/100
CVSS Score
2.3 LOW
v3.1 (cve.org)
EPSS Score
0.02% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

27 Mar 2023, 00:00
Published
Vulnerability first disclosed
24 Feb 2025, 19:19
Last Modified
Vulnerability information updated

Description

A flaw was found in the Linux kernel's implementation of RDMA over infiniband. An attacker with a privileged local account can leak kernel stack information when issuing commands to the /dev/infiniband/rdma_cm device node. While this access is unlikely to leak sensitive user information, it can be further used to defeat existing kernel protection mechanisms.

CVSS Metrics

  • v3.1•LOW•Score: 2.3CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N

EPSS Trends

Current EPSS score: 0.02%• Percentile: 4%

Techniques & Countermeasures

  • CWE-200•Exposure of Sensitive Information to an Unauthorized Actor

    The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

Affected Systems

  • fedoraproject•fedora

    37

  • linux•linux_kernel

    < 5.15.14

  • redhat•enterprise_linux

    6.0 | 7.0 | 8.0

References (2)