CVE-2021-3923

Low

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.

Package Linux Kernel
Published 2023-03-27
Last modified 2025-02-24
CVSS version 3.1
Patch available
Awaiting data

CVSS 3.1 score

2.3

out of 10
Low
Attack Vector
Local
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None
Vector string
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N

Weakness type

CWE-200

CVE-2021-3923 is a Information Exposure vulnerability

What is Information Exposure?

The product exposes sensitive information to an actor not authorised to see it. Learn more on MITRE CWE

References

2 total

Frequently asked questions

  • What is CVE-2021-3923?

    CVE-2021-3923 is a Low severity Linux kernel vulnerability with a CVSS score of 2.3 out of 10 , classified as an Information Exposure flaw (CWE-200) . CVE-2021-3923 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2021-3923?

    CVE-2021-3923 has a CVSS score of 2.3 out of 10, rated Low severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N .

  • Is there a patch available for CVE-2021-3923?

    Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2021-3923 patch availability.

  • Is CVE-2021-3923 actively exploited?

    No. CVE-2021-3923 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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